(a) ‘International Conventions’ means the 1974 International Convention for the Safety of Life at Sea (the 1974 SOLAS Convention), as amended, and the 1966 International Convention on Load Lines, together with the Protocols and amendments thereto;

(b) ‘Intact Stability Code’ means the ‘Code on Intact Stability for all types of ships covered by IMO Instruments’ contained in IMO Assembly Resolution A.749(18) of 4 November 1993, as amended;

(c) ‘High Speed Craft Code’ means the ‘International Code for Safety of High Speed Craft’ contained in IMO Resolution MSC 36 (63) of 20 May 1994, or the International Code for Safety of High-Speed Craft, 2000 (2000 HSC Code), contained in IMO Resolution MSC.97(73) of December 2000, in their up-to-date versions;

(d) ‘GMDSS’ means the Global Maritime Distress and Safety System as laid down in Chapter IV of the 1974 SOLAS Convention, as amended;

(e) ‘a passenger ship’ means a ship which carries more than 12 passengers;

(f) ‘ro-ro passenger ship’ means a ship carrying more than 12 passengers, having ro-ro cargo spaces or special category spaces, as defined in Regulation II-2/A/2 contained in Annex I;

(g) ‘high-speed passenger craft’ means a high-speed craft as defined in Regulation X/1 of the 1974 SOLAS Convention, as amended, which carries more than 12 passengers, with the exception of passenger ships engaged on domestic voyages in sea areas of Class B, C or D when:

▼M1

▼B

(h) ‘new ship’ means a ship the keel of which was laid or which was at a similar stage of construction on or after 1 July 1998; a ‘similar stage of construction’ means the stage at which:

(i) ‘existing ship’ means a ship which is not a new ship;

(j) ‘age’ means the age of the ship, expressed in terms of the number of years after the date of its delivery;

(k) ‘passenger’ means every person other than:

(l) ‘length of a ship’, unless expressly provided otherwise, means 96 % of the total length on a water line at 85 % of the least moulded depth measured from the top of the keel, or the length from the fore side of the stem to the axis of the rudder stock on that waterline, if that be greater. In ships designed with a rake of keel the waterline on which this length is measured shall be parallel to the designed waterline;

(m) ‘bow height’ means the bow height defined in Regulation 39 of the 1966 International Convention on Load Lines as the vertical distance at the forward perpendicular between the waterline corresponding to the assigned summer freeboard and the designed trim and the top of the exposed deck at side;

(n) ‘ship with a full deck’ means a ship that is provided with a complete deck, exposed to weather and sea, which has permanent means of closing all openings in the weatherpart thereof and below which all openings in the sides of the ship are fitted with permanent means of at least weathertight closing;

the complete deck may be a watertight deck or equivalent structure consisting of a non-watertight deck completely covered by a weathertight structure of adequate strength to maintain the weathertight integrity and fitted with weathertight closing appliances;

(o) ‘international voyage’ means a voyage by sea from a port of a Member State to a port outside that Member State, or conversely;

(p) ‘domestic voyage’ means a voyage in sea areas from a port of a Member State to the same or another port within that Member State;

(q) ‘sea area’ means an area as established pursuant to Article 4(2);

however, for the application of the provisions on radiocommunication, the definitions of sea areas will be those defined in Regulation 2, Chapter IV of the 1974 SOLAS Convention, as amended;

(r) ‘port area’ means an area other than a sea area, as defined by the Member States, extending to the outermost permanent harbour works forming an integral part of the harbour system, or to the limits defined by natural geographical features protecting an estuary or similar sheltered area;

(s) ‘place of refuge’ means any naturally or artificially sheltered area which may be used as a shelter by a ship or craft under conditions likely to endanger its safety;

(t) ‘Administration of the flag State’ means the competent authorities of the State whose flag the ship or craft is entitled to fly;

(u) ‘host State’ means a Member State to or from whose port(s) a ship or craft, flying a flag other than the flag of that Member State, is carrying out domestic voyages;

(v) ‘recognised organisation’ means an organisation recognised in conformity with Article 4 of Council Directive 94/57/EC of 22 November 1994 on common rules and standards for ship inspection and survey organisations and for the relevant activities of maritime administrations ( 1 );

(w) ‘a mile’ is 1 852 metres;

(x) ‘significant wave height’ means the average height of the highest third of wave heights observed over a given period;

(y) ‘persons with reduced mobility’ means anyone who has a particular difficulty when using public transport, including elderly persons, disabled persons, persons with sensory impairments and wheelchair users, pregnant women and persons accompanying small children.

(a) new passenger ships;

(b) existing passenger ships of 24 metres in length and above;

(c) high-speed passenger craft.

(a) passenger ships which are:

▼M1

▼B

(b) high-speed passenger craft which are:

(a) establish, and update when necessary, a list of sea areas under its jurisdiction, delimiting the zones for all-year-round operation and, where appropriate, restricted periodical operation of the classes of ships, using the criteria for classes set out in paragraph 1;

(b) publish the list in a public database available on the Internet site of the competent maritime authority;

(c) notify to the Commission the location of such information, and when modifications are made to the list.

(a) the construction and maintenance of the hull, main and auxiliary machinery, electrical and automatic plants shall comply with the standards specified for classification by the rules of a recognised organisation, or equivalent rules used by an Administration in accordance with Article 14(2) of Directive 94/57/EC;

(b) the provisions of Chapters IV, including the 1988 GMDSS amendments, V and VI of the 1974 SOLAS Convention, as amended, shall apply;

(c) the provisions for shipborne navigational equipment of Regulations 17, 18, 19, 20 and 21, Chapter V of the 1974 SOLAS Convention, in its up-to-date version, shall apply. Shipborne navigational equipment, as listed in Annex A(1) to Directive 96/98/EC and complying with the provisions of the latter, is considered to be in conformity with the type approval requirements of Regulation 18.1, Chapter V of the 1974 SOLAS Convention.

(a) general requirements:

(b) load line requirements:

(a) existing passenger ships of Class A shall comply with the regulations for existing passenger ships defined in the 1974 SOLAS Convention, as amended, and with the specific relevant requirements in this Directive; for those regulations for which the 1974 SOLAS Convention, as amended, leaves the interpretation to the discretion of the Administration, the Administration of the flag State shall apply the interpretations as contained in Annex I to this Directive;

(b) existing passenger ships of Class B shall comply with the specific relevant requirements in this Directive;

(c) existing passenger ships of Classes C and D shall comply with the specific relevant requirements in this Directive and in respect of matters not covered by such requirements with the rules of the Administration of the flag State; such rules shall provide an equivalent level of safety to that of Chapters II-1 and II-2 of Annex I, while taking into account the specific local operational conditions related to the sea areas in which ships of such classes may operate;

before existing passenger ships of Classes C and D can be engaged on regular domestic voyages in a host State, the Administration of the flag State shall obtain concurrence of the host State on such rules;

(d) where a Member State is of the view that rules required by the Administration of the host State pursuant to point (c) are unreasonable, it shall immediately notify the Commission thereof; the Commission shall initiate proceedings in order to take a decision in accordance with the procedure referred to in Article 11(2);

(e) repairs, alterations and modifications of a major character and outfitting related thereto shall be in compliance with the requirements for new ships as prescribed in point (a) of paragraph 2; alterations made to an existing ship which are intended solely to achieve a higher survivability standard shall not be regarded as modifications of a major character;

(f) the provisions of point (a), unless earlier dates are specified in the 1974 SOLAS Convention, as amended, and the provisions of points (b) and (c), unless earlier dates are specified in Annex I to this Directive, shall not be applied in relation to a ship the keel of which was laid or which was at a similar stage of construction:

(a) high speed passenger craft constructed or subjected to repairs, alterations or modifications of a major character on or after 1 January 1996 shall comply with the requirements of Regulation X/2 and X/3 of the 1974 SOLAS Convention, unless

(b) high-speed passenger craft constructed before 1 January 1996 and complying with the requirements of the High-Speed Craft Code shall continue operation certified under that Code;

high-speed passenger craft constructed before 1 January 1996 and not complying with the requirements of the High-Speed Craft Code may not be engaged on domestic voyages unless they were already in operation on domestic voyages in a Member State on 4 June 1998, in which case they may be allowed to continue their domestic operation in that Member State; such craft shall comply with the requirements of the DSC Code;

(c) the construction and maintenance of high-speed passenger craft and their equipment shall comply with the rules for the classification of high-speed craft of a recognised organisation, or equivalent rules used by an Administration in accordance with Article 14(2) of Directive 94/57/EC.

(a) the Member State shall inform the Commission and the other Member States of its decision without delay, giving substantiated reasons therefor;

(b) the Commission shall examine whether the suspension or the additional measures are justified for reasons of serious danger to safety and to the environment;

(c) it shall be decided, in accordance with the procedure referred to in Article 11(2), whether or not the decision of the Member State to suspend the operation of such ship or craft or to impose the additional measures is justified for reasons of serious danger to safety of life or property, or to the environment, and, if the suspension or the measures are not justified, that the Member State concerned shall be required to withdraw the suspension or the measures.

(a) the definitions in points (a), (b), (c), (d) and (v) of Article 2;

(b) the provisions relating to procedures and guidelines for surveys referred to in Article 12;

(c) the provisions concerning the 1974 SOLAS Convention, as amended, and the High-Speed Craft Code, including its subsequent amendments, laid down in Articles 4(3), 6(4), 12(3) and 13(3);

(d) the specific references to the ‘International Conventions’ and IMO resolutions referred to in points (g), (m) and (q) of Article 2, point (a) of Article 3(2), points (b) and (c) of Article 6(1), point (b) of Article 6(2) and Article 13(3).

(a) apply, for the purpose of this Directive, amendments made to the International Conventions;

(b) improve the technical specifications thereof, in the light of experience.

(a) a survey before the ship is put into service;

(b) a periodical survey once every 12 months; and

(c) additional surveys, as the occasion arises.

(a) an initial survey, before the ship is put into service on domestic voyages in a host State, for existing ships engaged on domestic voyages in the Member State the flag of which they are entitled to fly;

(b) a periodical survey once every 12 months; and

(c) additional surveys, as the occasion arises.

(a) to expedite the ongoing work within the IMO to revise the regulations of Chapters II-1, II-2 and III of the 1974 SOLAS Convention, as amended, containing issues left to the discretion of the Administration, to establish harmonised interpretations for those regulations and to adopt amendments to the latter accordingly; and

(b) to adopt measures for mandatory application of the principles underlying the provisions of MSC Circular 606 on Port State Concurrence with SOLAS Exemptions.

1. Where expressly provided, the regulations of this Annex are applicable to new and existing passenger ships of class A, B, C and D, engaged on domestic voyages, having regard to the scope of this Directive as provided in Article 3.

2. New class B, C and D ships having a length of less than 24 metres have to comply with the requirements of Regulations II-1/B/2 to II-1/B/8 and II-1/B/10 of this Annex, unless the Administration of a flag State, whose flag such ships are entitled to fly, ensures that they comply with the flag State’s national rules and that such rules guarantee an equivalent level of safety.

3. Where regulations of this Annex do not apply to new ships of less than 24 metres in length, the Administration of the flag State shall ensure that an equivalent safety level for such ships is provided through compliance with national rules.

4. Existing class C and D ships do not have to comply with the regulations of Chapters II-1 and II-2 of this Annex, provided that the Administration of a flag State, which flag such ships are entitled to fly, ensures that they comply with the flag State’s national rules and that such rules guarantee an equivalent level of safety.

5. In addition, if it is found impracticable and/or unreasonable, class B, C and D ships of less than 24 metres in length do not have to comply with the following regulations in Chapter II-1: In Part B, Regulation 10, in Part C, Regulations 4, 9 and 10 and in Part E, Regulations 1 to 9. The Administration of the flag State shall ensure that an equivalent safety level for such ships is provided through compliance with national rules.

6. Regardless of what is provided in Article 6.1(b), Class D ships not extending their voyage outside of Sea Area A 1, as defined in Regulation IV/2.12 of the 1974 SOLAS Convention, do not have to comply with the carriage requirements in Chapter IV of the 1974 SOLAS Convention, but shall at least comply with the provisions in Chapter IV of this Annex.

7. The provisions for navigation bridge visibility in Regulation V/22 of the 1974 SOLAS Convention, shall as far as is practicable and reasonable apply also to ships of less than 55 meters’ in length, where ‘length’ is as defined in Regulation V/2 of the 1974 SOLAS Convention.

8. Wherever the application of an IMO resolution is required in this Annex for existing ships, ships constructed until two years after the date of adoption by IMO of such resolution need not comply with such resolution provided they comply with the applicable previous resolution(s), if any.

9. Under repairs, alterations and modifications of a ‘major character’ is understood, by way of example:

10. The indication ‘(R…)’ that follows several titles of regulations in this Annex refers to the regulations of the 1974 SOLAS Convention, on which the regulations of this Annex have been based i.e.:

11. Provisions applicable to CLASS A SHIPS can be found in:

12. Provisions applicable to CLASS A RO-RO PASSENGER SHIPS:

Chapter II-1/B, Regulations 17-2 and 20,

.1

.2  Length of the ship is the length measured between perpendiculars taken at the extremities of the deepest subdivision load line.

.3  Breadth of the ship is the extreme width from outside of frame to outside of frame at or below the deepest subdivision load line.

.4  Draught is the vertical distance from the moulded base line amidships to the subdivision load line in question.

.5  Deadweight is the difference in tonnes between the displacement of a ship in water of a specific gravity of 1,025 at the load waterline corresponding to the assigned summer freeboard and the lightweight of the ship.

.6  Lightweight is the displacement of a ship in tonnes without cargo, fuel, lubricating oil, ballast water, fresh water and feedwater in tanks, consumable stores, and passengers and crew and their effects.

.7  Bulkhead deck is the uppermost deck up to which the transverse watertight bulkheads are carried.

.8  Margin line is a line drawn at least 76 mm below the upper surface of the bulkhead deck at side.

.9  Permeability of a space is the percentage of that space which can be occupied by water. The volume of a space which extends above the margin line shall be measured only to the height of that line.

.10  Machinery space is to be taken as extending from the moulded base line to the margin line and between the extreme main transverse watertight bulkheads, bounding the spaces containing the main and auxiliary propulsion machinery, and boilers serving the needs of propulsion.

.11  Passenger spaces are those spaces which are provided for the accommodation and use of passengers, excluding baggage, store, provision and mail rooms.

.12  Watertight in relation to structure means capable of preventing the passage of water through the structure in any direction under the head of water likely to occur in the intact or damage condition.

.13  Weathertight means that water will not penetrate into the ship in any sea conditions.

.14  Ro-ro passenger ship means a passenger ship with ro-ro cargo spaces or special category spaces as defined in Regulation II-2/A/2.

.1

.2  Steering gear power unit is:

.3  Auxiliary steering gear is the equipment other than any part of the main steering gear necessary to steer the ship in the event of failure of the main steering gear but not including the tiller, quadrant or components serving the same purpose.

.4  Normal operational and habitable condition is a condition under which the ship as a whole, the machinery, services, means and aids ensuring propulsion, ability to steer, safe navigation, fire and flooding safety, internal and external communications and signals, means of escape, and emergency boat winches, as well as the designed comfortable conditions of habitability are in working order and functioning normally.

.5  Emergency condition is a condition under which any services needed for normal operational and habitable conditions are not in working order due to failure of the main source of electrical power.

.6  Main source of electrical power is a source intended to supply electrical power to the main switchboard for distribution to all services necessary for maintaining the ship in normal operational and habitable condition.

.7  Dead ship condition is the condition under which the main propulsion plant, boilers and auxiliaries are not in operation due to the absence of power.

.8  Main generating station is the space in which the main source of electrical power is situated.

.9  Main switchboard is a switchboard which is directly supplied by the main source of electrical power and is intended to distribute electrical energy to the ship’s services.

.10  Emergency switchboard is a switchboard which in the event of failure of the main electrical power supply system is directly supplied by the emergency source of electrical power or the transitional source of emergency power and is intended to distribute electrical energy to the emergency services.

.11  Emergency source of electrical power is a source of electrical power, intended to supply the emergency switchboard in the event of failure of the supply from the main source of electrical power.

.12  Maximum ahead service speed is the greatest speed which the ship is designed to maintain in service at sea at the deepest seagoing draught.

.13  Maximum astern speed is the speed which it is estimated the ship can attain at the designed maximum astern power at the deepest seagoing draught.

.14(a)  Machinery spaces are all machinery spaces of category A and all other spaces containing propelling machinery, boilers, oil fuel units, steam and internal combustion engines, generators and major electrical machinery, oil filling stations, refrigerating, stabilising, ventilation and air conditioning machinery, and similar spaces, and trunks to such spaces.

.14(b)  Machinery spaces of category A are those spaces and trunks to such spaces which contain:

.15  Power actuating system is the hydraulic equipment provided for supplying power to turn the rudderstock, comprising a steering gear power unit or units, together with the associated pipes and fittings, and a rudder actuator. The power actuating systems may share common mechanical components, i.e. tiller, quadrant and rudder stock, or components serving the same purpose.

.16  Control stations are those spaces in which the ship’s radio or main navigating equipment or the emergency source of power is located or where the fire recording or fire control equipment is centralised.

.1 This Regulation shall apply to materials used for the structure, machinery, electrical installations and equipment covered by the Regulations of this Annex.

.2 For all ships, new installation of materials which contain asbestos shall be prohibited.

.1 A set of as-built construction drawings and other plans showing any subsequent structural alterations shall be kept on board ships constructed on or after 1 January 2012.

.2 An additional set of such drawings shall be kept ashore by the Company, as defined in Regulation IX/1.2 of the 1974 SOLAS Convention.

.3 Reference is made to the IMO MSC/Circ.1135 on ‘As-built construction drawings to be maintained on board the ship and ashore’.

.1 Ships shall be provided with arrangements, equipment and fittings of sufficient safe working load to enable the safe conduct of all towing and mooring operations associated with the normal operation of the ship.

.2 Arrangements, equipment and fittings provided in accordance with paragraph 1 shall comply with the standards specified for classification by the rules of a recognised organisation, or equivalent rules used by an Administration in accordance with Article 14(2) of Directive 94/57/EC.

.3 Reference is made to the IMO MSC/Circ.1175 on ‘Guidance on shipboard towing and mooring equipment’.

.4 Each fitting or item of equipment provided under this Regulation shall be clearly marked with any restrictions associated with its safe operation, taking into account the strength of its attachment to the ship’s structure.

.1 Ships of 1 600 gross tonnage and above shall be constructed to reduce on-board noise and to protect personnel from the noise in accordance with the IMO Code on noise levels on-board ships, adopted by the Maritime Safety Committee by resolution MSC.337(91), as may be amended by the IMO.

(a) The area under the curve of righting lever (GZ curve) shall not be less than:

(b) The righting lever GZ shall be at least 0,20 metre at an angle of heel equal to or greater than 30 °.

(c) The maximum righting lever GZ shall occur at an angle of heel preferably exceeding 30 ° but not less than 25 °.

(d) The initial transverse metacentric height shall not be less than 0,15 metre.

.1 The floodable length at a given point is the maximum portion of the length of the ship, having its centre at the point in question, which can be flooded, under the assumption for permeability given below, without the ship being submerged beyond the margin line.

.2 In case of a ship not having a continuous bulkhead deck, the floodable length at any point may be determined to an assumed continuous margin line which at no point is less than 76 mm below the top of the deck at side to which the bulkheads concerned and the shell are carried watertight.

.3 Where a portion of an assumed margin line is appreciably below the deck to which bulkheads are carried, the Administration of the flag State may permit a limited relaxation in the watertightness of those portions of the bulkheads which are above the margin line and immediately under the higher deck.

1,0 when the ship is certified to carry less than 400 persons, and

1,0 when the ship is certified to carry 400 persons or more with a length a L<55, and

0,5 when the ship is certified to carry 400 persons or more.

.1 Where in a portion or portions of a ship the watertight bulkheads are carried to a higher deck than in the remainder of the ship and it is desired to take advantage of this higher extension of the bulkheads in calculating the floodable length, separate margin lines may be used for each such portion of the ship provided that:

.2 A compartment may exceed the permissible length determined by the rules of Regulation 4 provided the combined length of each pair of adjacent compartments to which the compartment in question is common does not exceed either the floodable length or twice the permissible length, whichever is less.

.3 A main transverse bulkhead may be recessed provided that all parts of the recess lie inboard of vertical surfaces on both sides of the ship, situated at a distance from the shell plating equal to one fifth of the breadth of the ship, and measured at right angles to the centreline at the level of the deepest subdivision load line. Any part of a recess which lies outside these limits shall be dealt with as a step in accordance with paragraph 6.

.4 Where a main transverse bulkhead is recessed or stepped, an equivalent plane bulkhead shall be used in determining the subdivision.

.5 Where a main transverse watertight compartment contains local subdivision and the Administration of the flag State is satisfied that, after any assumed side damage extending over a length of 3,0 metres plus 3 % of the length of the ship or 11,0 metres, or 10 % of the length of the ship whichever is the less, the whole volume of the main compartment will not be flooded, a proportionate allowance may be made in the permissible length otherwise required for such compartment. In such a case the volume of the effective buoyancy assumed on the undamaged side shall not be greater than that assumed on the damaged side.

Allowance under this paragraph will only be made if such allowance is not likely to prevent compliance with Regulation 8.

.6 A main transverse bulkhead may be stepped provided that it meets one of the following conditions:

.7 In ships of 100 metres in length and upwards, one of the main transverse bulkheads abaft the forepeak shall be fitted at a distance from the forward perpendicular which is not greater than the permissible length.

.8 If the distance between two adjacent main transverse bulkheads, or their equivalent plank bulkheads, or the distance between the transverse planes passing through the nearest stepped portions of the bulkheads, is less than 3,0 metres plus 3 % of the length of the ship, or 11,0 metres, or 10 % of the length of the ship, whichever is less, only one of these bulkheads shall be regarded as forming part of the subdivision of the ship.

.9 Where the required subdivision factor is 0,50, the combined length of any two adjacent compartments shall not exceed the floodable length.

.1.1 Sufficient intact stability shall be provided in all service conditions so as to enable the ship to withstand the final stage of flooding of any one main compartment which is required to be within the floodable length.

.1.2 Where two adjacent main compartments are separated by a bulkhead which is stepped under the conditions of Regulation 7.6.1, the intact stability shall be adequate to withstand the flooding of those two adjacent compartments.

.1.3 Where the required factor of subdivision is 0,50, the intact stability shall be adequate to withstand the flooding of any two adjacent compartments.

.2.1 The requirements of subparagraph .1 shall be determined by calculations which are in accordance with paragraphs .3, .4 and .6 and which take into consideration the proportions and design characteristics of the ship and the arrangement and configuration of the damaged compartments. In making these calculations the ship is to be assumed in the worst anticipated service condition as regards stability.

.2.2 Where it is proposed to fit decks, inner skins or longitudinal bulkheads of sufficient tightness to seriously restrict the flow of water, proper consideration is to be given to such restrictions in the calculations.

.2.3 The stability required in the final condition after damage, and after equalisation where provided, shall be determined as follows:

.2.4. When major progressive flooding occurs, that is when it causes a rapid reduction in the righting lever of 0,04 metres or more, the righting lever curve is to be considered as terminated at the angle the progressive flooding occurs and the range and the area referred to in .2.3.1 and .2.3.2 should be measured to that angle.

.2.5 In cases where the progressive flooding is of limited nature that does not continue unabated and causes an acceptably slow reduction in righting lever of less than 0,04 metres, the remainder of the curve shall be partially truncated by assuming that the progressively flooded space is so flooded from the beginning.

.2.6 In intermediate stages of flooding, the maximum righting lever shall be at least 0,05 metres and the range of positive righting levers shall be at least 7. In all cases, only one breach in the hull and only one free surface need be assumed.

.3 For the purpose of making damaged stability calculations the volume and surface permeabilities shall be as follows:

Higher surface permeabilities are to be assumed in respect of spaces which, in the vicinity of the damaged waterplane, contain no substantial quantity of accommodation or machinery and spaces which are not generally occupied by any substantial quantity of cargo or stores.

.4 Assumed extent of damage shall be as follows:

.5 Unsymmetrical flooding is to be kept to a minimum consistent with efficient arrangements. Where it is necessary to correct large angles of heel, the means adopted shall, where practicable, be self-acting, but in any case where controls to cross-flooding fittings are provided they shall be operable from above the bulkhead deck. For new class B, C and D ships the maximum angle of heel after flooding but before equalisation shall not exceed 15 °. Where cross-flooding fittings are required the time for equalisation shall not exceed 15 minutes. Suitable information concerning the use of cross-flooding fittings shall be supplied to the master of the ship.

.6 The final conditions of the ship after damage and, in the case of unsymmetrical flooding, after equalisation measures have been taken shall be as follows:

.7 The master of the ship shall be supplied with the data necessary to maintain sufficient intact stability under service conditions to enable the ship to withstand the critical damage. In the case of ships requiring cross-flooding, the master of the ship shall be informed of the conditions of stability on which the calculations of heel are based and be warned that excessive heeling might result should the ship sustain damage when in a less favourable condition.

.8 The data referred to in paragraph .7 to enable the master to maintain sufficient intact stability shall include information which indicates the maximum permissible height of the ship’s centre of gravity above keel (KG), or alternatively the minimum permissible metacentric height (GM), for a range of draughts or displacements sufficient to include all service conditions. The information shall show the influence of various trims taking into account the operational limits.

.9 Each ship shall have scales of draughts marked clearly at the bow and stern. In the case where the draught marks are not located where they are easily readable, or operational constraints for a particular trade make it difficult to read the draught marks, then the ship shall also be fitted with a reliable draught indicating system by which the bow and stern draughts can be determined.

.10 On completion of loading of the ship and prior to its departure, the master shall determine the ship’s trim and stability and also ascertain and record that the ship is in compliance with stability criteria in the relevant Regulations. The determination of the ship’s stability shall always be made by calculation. An electronic loading and stability computer or equivalent means may be used for this purpose.

.11 No relaxation from the requirements for damage stability may be considered by the Administration of the flag State unless it is shown that the intact metacentric height in any service condition necessary to meet these requirements is excessive for the service intended.

.12 Relaxations from the requirements for damage stability shall be permitted only in exceptional cases and subject to the condition that the Administration of the Flag State is to be satisfied that the proportions, arrangements and other characteristics of the ship are the most favourable to stability after damage which can practically and reasonably be adopted in the particular circumstances.

.1 Existing class B ro-ro passenger ships shall comply with Regulation 8, not later than the date of the first periodical survey after the date of compliance prescribed below, according to the value of A/Amax as defined in the Annex to MSC/Circ.574, ‘Calculation Procedure to Assess the Survivability Characteristics of Existing Ro-Ro Passenger Ships When Using a Simplified Method Based Upon Resolution A.265(VIII)’.

.1 new ro-ro passenger ships certified to carry 400 persons or more shall comply with the provisions of paragraph .2.3 of Regulation II-1/B/8, assuming the damage applied anywhere within the ship’s length L; and

.2 existing ro-ro passenger ships certified to carry 400 persons or more shall comply with the requirements of paragraph 1 not later than the date of the first periodical survey after the date of compliance prescribed in subparagraph .2.1, .2.2 or .2.3 which is to occur at the latest:

.1 A forepeak or collision bulkhead shall be fitted which shall be watertight up to the bulkhead deck. This bulkhead shall be located at a distance from the forward perpendicular of not less than 5 % of the length of the ship and not more than 3 metres plus 5 % of the length of the ship.

.2 Where any part of the ship below the waterline extends forward of the forward perpendicular, e. g. a bulbous bow, the distances stipulated in paragraph 1 shall be measured from a point either:

.3 Where a long forward superstructure is fitted, the forepeak or collision bulkhead shall be extended weathertight to the next full deck above the bulkhead deck. The extension shall be so arranged as to preclude the possibility of the bow door causing damage to it in the case of damage to, or detachment of, a bow door.

.4 The extension required in paragraph .3 need not be fitted directly above the bulkhead below provided all parts of the extension are not located forward of the forward limit specified in paragraph 1 or in paragraph 2.

However in existing class B ships:

.5 Ramps not meeting the above requirements shall be disregarded as an extension to the collision bulkhead.

.6 An afterpeak bulkhead, and bulkheads dividing the machinery space, from the cargo and passenger spaces forward and aft, shall also be fitted and made watertight up to the bulkhead deck. The afterpeak bulkhead may, however, be stepped below the bulkhead deck, provided the degree of safety of the ship as regards subdivision is not thereby diminished.

.7 In all cases stern tubes shall be enclosed in watertight spaces. The stern gland shall be situated in a watertight shaft tunnel or other watertight space separate from the stern tube compartment and of such volume that, if flooded by leakage through the stern gland, the margin line will not be submerged.

.1 In ships with a length of less than 50 metres a double bottom shall be fitted extending from the forepeak bulkhead to the afterpeak bulkhead as far is this is practicable and compatible with the design and proper working of the ship.

.2 In ships of 50 metres and upwards but less than 61 metres in length, a double bottom shall be fitted at least from the machinery space to the forepeak bulkhead, or as near thereto as practicable.

.3 In ships of 61 metres and upwards but less than 76 metres in length, a double bottom shall be fitted at least outside the machinery space and shall extend to the fore and after peak bulkheads or as near thereto as practicable.

.4 In ships of 76 metres in length and upwards, a double bottom shall be fitted admidships and shall extend to the fore and after peak bulkhead or as near as practicable.

.5 Where a double bottom is required to be fitted its depth shall comply with the standards of a recognised organisation and the inner bottom shall be continued out to the ship’s sides in such a manner as to protect the bottom to the turn of the bilge. Such protection will be deemed satisfactory if the line of intersection of the outer edge of the margin plate with the bilge plating is not lower at any part than a horizontal plane passing through the point of intersection with the frame line amidships of a transverse diagonal line inclined at 25 ° to the base line and cutting it at a point one half of the ship’s moulded breadth from the middle line.

.6 Small wells constructed in the double bottom in connection with drainage arrangements of holds, etc., shall not extend downwards more than necessary. The depth of the well shall in no case be more than the depth less 460 mm of the double bottom at the centreline, nor shall the well extend below the horizontal plane referred to in paragraph .2. A well extending to the outer bottom is, however, permitted at the after end of the shaft tunnel. Other wells (e.g. for lubricating oil under main engines) may be permitted by the Administration of the flag State if satisfied that the arrangements give protection equivalent to that afforded by a double bottom complying with this Regulation.

.7 A double bottom need not be fitted in way of watertight compartments of moderate size used exclusively for the carriage of liquids, provided the safety of the ship, in the event of bottom or side damage, is not, in the opinion of the Administration of the flag State, thereby impaired.

.8 Notwithstanding paragraph .1 of this Regulation 10, the Administration of the flag State may permit a double bottom to be dispensed with in any part of the ship which is subdivided by a factor not exceeding 0,5, if satisfied that the fitting of a double bottom in that part would not be compatible with the design and proper working of the ship.

.1 In order that the required degree of subdivision shall be maintained, a load line corresponding to the approved subdivision draught shall be assigned and marked on the ship’s sides amidships. A ship having spaces which are specially adapted for the accommodation of passengers and the carriage of cargo alternatively may, if owners desire, have one or more additional load lines assigned and marked to correspond with the subdivision draughts which the Administration of the flag State may approve for alternative service conditions.

.2 The subdivision load lines assigned and marked shall be recorded in the Passenger Ship Safety Certificate, and shall be identified by the notation C.1 if there is only one subdivision load line.

If there is more than one subdivision load line, the alternative conditions shall be identified by the notations C.2, C.3, C.4 etc. ( 2 ).

.3 The freeboard corresponding to each of these load lines shall be measured at the same position and from the same deck line as the freeboards determined in accordance with the International Convention on Load Lines in force.

.4 The freeboard corresponding to each approved subdivision load line and the conditions of service for which it is approved shall be clearly indicated on the Passenger Ship Safety Certificate.

.5 In no case shall any subdivision load line mark be placed above the deepest load line in salt water as determined by the strength of the ship or the International Convention on Load Lines in force.

.6 Whatever may be the position of the subdivision load line marks, a ship shall in no case be loaded so as to submerge the load line mark appropriate to the season and locality as determined in accordance with the International Convention on Load Lines in force.

.7 A ship shall in no case be so loaded that the subdivision load line mark appropriate to the particular voyage and condition of service is submerged.

.1 Each watertight subdivision bulkhead, whether transverse or longitudinal, shall be constructed in such a manner that it shall be capable of supporting, with a proper margin of resistance, the pressure due to the maximum head of water which it might have to sustain in the event of damage to the ship but at least the pressure due to a head of water up to the margin line. The construction of these bulkheads shall be in accordance with the standards of a recognised organisation.

.2.1 Steps and recesses in bulkheads shall be watertight and as strong as the bulkhead at the place where each occurs.

.2.2 Where frames or beams pass through a watertight deck or bulkhead, such deck or bulkhead shall be made structurally watertight without the use of wood or cement.

.3 Testing main compartments by filling them with water is not compulsory. When testing by filling with water is not carried out, a hose test shall be carried out where practicable. This test shall be carried out in the most advanced stage of the fitting out of the ship. Where a hose test is not practicable because of possible damage to machinery, electrical equipment insulation or out fitting items, it may be replaced by a careful visual examination of welded connections, supported where deemed necessary by means such as a dye penetrant test or ultrasonic leak test or an equivalent test. In any case, a thorough inspection of the watertight bulkheads shall be carried out.

.4 The forepeak, double bottoms (including duct keels) and inner skins shall be tested with water to a head corresponding to the requirements of paragraph .1.

.5 Tanks which are intended to hold liquids, and which form part of the subdivision of the ship, shall be tested for tightness with water to a head up to the deepest subdivision load line or to a head corresponding to two thirds of the depth from the top of keel to the margin line in way of the tanks, whichever is the greater, provided that in no case shall the test head be less than 0,9 metres above the top of the tank; if testing by water is impracticable, air leak testing while the tanks are subjected to an air pressure of not more than 0,14 bar may be accepted.

.6 The tests referred to in paragraphs .4 and .5 are for the purpose of ensuring that the subdivision structural arrangements are watertight and are not to be regarded as a test of the fitness of any compartment for the storage of oil fuel or for other special purposes for which a test of a superior character may be required depending on the height to which the liquid has access in the tank or its connections.

.1 This Regulation applies to passenger ships designed or adapted for the carriage of goods vehicles and accompanying personnel.

.2 If in such a ship the total number of passengers, including persons accompanying vehicles, does not exceed N = 12 + A/25, where A = total deck area (square metres) of spaces available for the stowage of goods vehicles and where the clear height at the stowage position and at the entrance to such spaces is not less than 4 metres, the provisions of Regulation 13, paragraph .10, in respect of watertight doors apply except that the doors may be fitted at any level in watertight bulkheads dividing cargo spaces. Additionally, indicators are required on the navigating bridge to show automatically when each door is closed and all door fastenings are secured.

.3 When applying the provisions of this chapter to such a ship, N shall be taken as the maximum number of passengers for which the ship may be certified in accordance with this Regulation.

.1 All reasonable and practicable measures shall be taken to limit the entry and spread of water above the bulkhead deck. Such measures may include partial bulkheads or webs. When partial watertight bulkheads and webs are fitted on the bulkhead deck, above or in the immediate vicinity of main subdivision bulkheads, they shall have watertight shell and bulkhead deck connections so as to restrict the flow of water along the deck when the ship is in a heeled damaged condition. Where the partial watertight bulkhead does not line up with the bulkhead below, the bulkhead deck between shall be made effectively watertight.

.2 The bulkhead deck or a deck above it shall be weathertight. All openings in the exposed weather deck shall have coamings of ample height and strength and shall be provided with efficient means for expeditiously closing them weathertight. Freeing ports, open rails and scuppers shall be fitted as necessary for rapidly clearing the weather deck of water under all weather conditions.

.3 In existing class B ships, the open end of air pipes terminating within a superstructure shall be at least 1 metre above the waterline when the ship heels to an angle of 15 °C, or the maximum angle of heel during intermediate stages of flooding, as determined by direct calculation, whichever is the greater. Alternatively, air pipes from tanks other than oil tanks may discharge through the side of the superstructure. The provisions of this paragraph are without prejudice to the provisions of the International Convention on Load Lines in force.

.4 Sidescuttles, gangway, cargo ports and the other means for closing openings in the shell plating above the margin line shall be of efficient design and construction and of sufficient strength having regard to the spaces in which they are fitted and their positions relative to the deepest subdivision load line.

.5 Efficient inside deadlights, so arranged that they can be easily and effectively closed and secured watertight, shall be provided for all sidescuttles to spaces below the first deck above the bulkhead deck.

.1 The following doors, located above the margin line, shall be closed and locked before the ship proceeds on any voyage, and shall remain closed and locked until the ship is at its next berth:

.2 Notwithstanding the requirements of paragraph .1.1 and .1.4, the Administration of the flag State may authorise that particular doors can be opened at the discretion of the master, if necessary for the operation of the ship or the embarking and disembarking of passengers, when the ship is at safe anchorage and provided that the safety of the ship is not impaired.

.3 The master shall ensure that an effective system of supervision and reporting of the closing and opening of the doors referred to in paragraph .1 is implemented.

.4 The master shall ensure, before the ship proceeds on any voyage, that an entry in the logbook, as required in Regulation 22, is made of the time of the last closing of the doors specified in paragraph .1 and the time of any opening of particular doors in accordance with paragraph .2.

.1.1 Subject to the provisions of paragraphs .1.2 and .1.3, all accesses that lead to spaces below the bulkhead deck shall have a lowest point which is not less than 2,5 metres above the bulkhead deck;

.1.2 where vehicle ramps are installed to give access to spaces below the bulkhead deck, their openings shall be able to be closed weathertight to prevent ingress of water below, alarmed and indicated to the navigation bridge;

.1.3 the Administration of the flag State may permit the fitting of particular accesses to spaces below the bulkhead deck provided they are necessary for the essential working of the ship, e.g. movement of machinery and stores, subject to such accesses being made watertight, alarmed and indicated to the navigation bridge;

.1.4 the accesses referred to in paragraphs .1.2 and .1.3 shall be closed before the ship leaves the berth on any voyage and shall remain closed until the ship is at its next berth;

.1.5 the master shall ensure that an effective system of supervision and reporting of the closing and opening of such accesses referred to in paragraphs .1.2 and .1.3 is implemented; and

.1.6 the master shall ensure, before the ship leaves the berth on any voyage, that an entry in the logbook, as required by Regulation II-1/B/22, is made of the time of the last closing of the accesses referred to in paragraphs .1.2 and .1.3;

.1.7 new class C ro-ro passenger ships of less than 40 metres in length and new class D ro-ro passenger ships may, instead of complying with paragraphs .1.1 to .1.6, comply with paragraphs .2.1 to .2.3, provided that coaming and sill heights are at least 600 mm on open ro-ro cargo decks and at least 380 mm on enclosed ro-ro cargo decks.

.2.1 All accesses from the ro-ro deck that lead to spaces below the bulkhead deck shall be made weathertight and means shall be provided on the navigation bridge, indicating whether the access is open or closed;

.2.2 all such accesses shall be closed before the ship leaves the berth on any voyage and shall remain closed until the ship is at its next berth;

.2.3 notwithstanding the requirements of paragraph .2.2, the Administration of the flag State may permit some accesses to be opened during the voyage but only for a period sufficient to permit through passage and, if required, for the essential working of the ship.

.1 All transverse and longitudinal bulkheads which are taken into account as effective to confine the seawater accumulated on the ro-ro deck shall be in place and secured before the ship leaves the berth and remain in place and secured until the ship is at its next berth.

.2 Notwithstanding the requirements of paragraph .1, the Administration of the flag State may permit some accesses within such bulkheads to be opened during the voyage but only for sufficient time to permit through passage and, if required, for the essential working of the ship.

.1 Every passenger ship, shall be inclined upon its completion and the elements of its stability determined. The master shall be supplied with such information, approved by the Administration of the flag State, as is necessary to enable him by rapid and simple processes to obtain accurate guidance as to the stability of the ship under varying conditions of service.

.2 Where any alterations are made to a ship so as to affect materially the stability information supplied to the master, amended stability information shall be provided. If necessary the ship shall be re-inclined.

.3 At periodical intervals not exceeding five years, a lightweight survey shall be carried out to verify any changes in the light ship displacement and longitudinal centre of gravity. The ship shall be re-inclined whenever, in comparison with the approved stability information, a deviation from the lightship displacement exceeding 2 % or a deviation of the longitudinal centre of gravity exceeding 1 % of the length of the ship is found or anticipated.

.4 The Administration of the flag State may allow the inclining test of an individual ship to be dispensed with provided basic stability data are available from the inclining test of a sister ship and it is shown to the satisfaction of the Administration of the flag State that reliable stability information for the exempted ship can be obtained from such basic data. Reference is made to MSC/Circ.1158.

.5 When an accurate inclining is not practical, the lightweight displacement and centre of gravity shall be determined by a lightweight survey and accurate calculation. Reference is made to the information contained in Regulation 2.7 in the in the High Speed Craft Code 2000.

.1 Indicators shall be provided on the navigating bridge for all shell doors, loading doors and other closing appliances which, if left open or not properly secured, could lead to flooding of a special category space or ro-ro cargo space. The indicator system shall be designed on the fail-safe principle and shall show by visual alarms if the door is not fully closed or if any of the securing arrangements are not in place and fully locked and by audible alarms if such door or closing appliances become open or the securing arrangements become unsecured. The indicator panel on the navigating bridge shall be equipped with a mode selection function ‘harbour/sea voyage’ so arranged that an audible alarm is given on the navigation bridge if the ship leaves harbour with the bow doors, inner doors, stern ramp or any other shell doors not closed or any closing device not in correct position. The power supply for the indicator system shall be independent of the power supply for operating and securing the doors. Indicator systems, approved by the Administration of the flag State, which were installed on board existing ships, need not be changed.

.2 Television surveillance and a water leakage detection system shall be arranged to provide an indication to the navigation bridge and to the engine control station of any leakage through inner and outer bow doors, stern doors or any other shell doors which could lead to flooding of special category spaces or ro-ro cargo spaces.

.3 Special category spaces and ro-ro cargo spaces shall be continuously patrolled or monitored by effective means, such as television surveillance, so that any movement of vehicles in adverse weather conditions and unauthorised access by passengers thereto can be detected whilst the ship is underway.

.4 Documented operating procedures for closing and securing all shell doors, loading doors and other closing appliances which, if left open or not properly secured, could lead to flooding of a special category space or ro-ro cargo space, shall be kept on board and posted at an appropriate place.

.1 Drills for the operating of the watertight doors, sidescuttles, valves and closing mechanisms of scuppers shall take place weekly.

.2 All watertight doors in main transverse bulkheads, in use at sea, shall be operated daily.

.3 The watertight doors and all mechanisms and indicators connected herewith, all valves, the closing of which is necessary to make a compartment watertight, and all valves the operation of which is necessary for damage control cross-connections shall be periodically inspected at sea at least once a week.

.4 Such valves, doors and mechanisms shall be suitably marked to ensue that they may be properly used to provide maximum safety.

.1 Hinged doors, portable plates, sidescuttles, gangway and cargo ports and other openings, which are required by these Regulations to be kept closed during navigation, shall be closed before the ship leaves the port. The time of closing and the time of opening (if permissible under these Regulations) shall be recorded in the logbook.

.2 A record of all drills and inspections required by Regulation 21 shall be entered in the logbook with an explicit record of any defects which may be disclosed.

1. On external decks to which passengers are permitted access, and where there is no bulwark of adequate height provided, railings shall be provided of a height of minimum 1 100 mm above the deck and of such design and construction as to prevent any passenger from climbing on these railings and from accidentally falling from that deck.

2. Stairs and landings on such external decks shall be provided with railings of equivalent construction.

.1 The machinery, boilers and other pressure vessels, associated piping systems and fittings shall be so installed and protected as to reduce to a minimum any danger to persons on board, due regard being paid to moving parts, hot surfaces and other hazards.

.2 Means shall be provided whereby normal operation of propulsion machinery can be sustained or restored even though one of the essential auxiliaries becomes inoperative.

.3 Means shall be provided to ensure that the machinery can be brought into operation from the dead ship condition without external aid.

.4 Main propulsion machinery and all auxiliary machinery essential to the propulsion and the safety of the ship shall, as fitted in the ship, be designed to operate when the ship is upright and when inclined at any angle of list up to and including 15 ° either way under static conditions and 22,5 ° under dynamic conditions (rolling) either way and simultaneously inclined dynamically (pitching) 7,5 ° by bow or stern.

.5 Means shall be provided for the propulsion machinery and the propeller to be stopped in cases of emergencies from relevant positions outside of the engine room/engine control room, e.g. open deck or the wheel house.

.6 Location and arrangement of vent pipes for fuel oil service, settling and lubricating oil tanks shall be such that in the event of a broken vent pipe this shall not directly lead to the risk of ingress of seawater splashes or rainwater. Two fuel oil service tanks for each type of fuel used on board necessary for propulsion and vital systems or equivalent arrangements shall be provided on each ship, with a capacity of at least 8 hours for class B ships and at least 4 hours for class C and D ships, at maximum continuous rating of the propulsion plant and normal operating load at sea of the generator plant.

.1 Internal combustion engines of a cylinder diameter of 200 mm, or a crankcase volume of 0,6 m3 and above shall be provided with crankcase explosion relief valves of a suitable type with sufficient relief area. The relief valves shall be arranged or provided with means to ensure that discharge from them is so directed as to minimise the possibility of injury to personnel.

.1.1 An efficient bilge pumping system shall be provided, capable of pumping from and draining any watertight compartment other than a space permanently appropriated for the carriage of fresh water, water ballast, oil fuel or liquid cargo and for which other efficient means of pumping are provided, under all practical conditions. Efficient means shall be provided for draining water from insulated holds.

.1.2 Sanitary, ballast and general service pumps may be accepted as independent power bilge pumps if fitted with the necessary connections to the bilge pumping system.

.1.3 All bilge pipes used in or under fuel storage tanks or in boiler or machinery spaces, including spaces in which oil-settling tanks or oil fuel pumping units are situated, shall be of steel or other suitable material.

.1.4 The arrangement of the bilge and ballast pumping system shall be such as to prevent the possibility of water passing from the sea and from water ballast spaces into the cargo and machinery spaces, or from one compartment to another. Provision shall be made to prevent any deep tank having bilge and ballast connections being inadvertently flooded from the sea when containing cargo, or being discharged through a bilge pump when containing water ballast.

.1.5 All distribution boxes and manually operated valves in connection with the bilge pumping arrangements shall be in positions which are accessible under ordinary circumstances.

.1.6 Provision shall be made for the drainage of enclosed cargo spaces situated on the bulkhead deck.

.1.6.1 Where the freeboard to the bulkhead deck is such that the deck edge is immersed when the ship heels more than 5 °, the drainage shall be by means of a sufficient number of scuppers of suitable size discharging directly overboard, fitted in accordance with the requirements of Regulation 15.

.1.6.2 Where the freeboard is such that the edge of the bulkhead deck is immersed when the ship heels 5 ° or less, the drainage of the enclosed cargo spaces on the bulkhead deck shall be led to a suitable space, or spaces, of adequate capacity, having high water level alarm and provided with suitable arrangements for discharge overboard. In addition it will be ensured that:

.1.6.3 The drainage from ro-ro decks and car decks shall be of sufficient capacity that the scuppers, wash ports etc. on the starboard and the port side shall be able to cope with a quantity of water originating from drencher and fire pumps, taking into account the ship’s conditions of heel and trim.

.1.6.4 When provided with sprinkler installations and hydrants, passenger and crew lounges shall have an adequate number of scuppers, sufficient to cope with the quantity of water originating from fire extinguishing by the room’s sprinkler heads and from two fire hoses with jets. The scuppers shall be located in the most effective positions, e.g. in each corner.

.2.1 The bilge pumping system required by paragraph .1.1 shall be capable of operation under all practicable conditions after a casualty whether the ship is upright or listed. For this purpose wing suctions shall generally be fitted except in narrow compartments at the end of the ship where one suction may be sufficient. In compartments of unusual form, additional suctions may be required. Arrangements shall be made whereby water in the compartment may find its way to the suction pipes.

.2.2 Where practicable, the power bilge pumps shall be placed in separate watertight compartments and so arranged or situated that these compartments will not be flooded by the same damage. If the main propulsion machinery, auxiliary machinery and boilers are in two or more watertight compartments, the pumps available for bilge service shall be distributed as far as is possible throughout these compartments.

.2.3 With the exception of additional pumps which may be provided for peak compartments only, each required bilge pump shall be so arranged as to draw water from any space required to be drained by paragraph .1.1.

.2.4 Each power bilge pump shall be capable of pumping water through the required main bilge pipe at a speed of not less than 2 m/sec. Independent power bilge pumps situated in machinery spaces shall have direct suctions from these spaces, except that not more than two such suctions shall be required in any one space. Where two or more such suctions are provided there shall be at least one on each side of the ship. Direct suctions shall be suitably arranged and those in a machinery space shall be of a diameter not less than that required for the bilge main.

.2.5 In addition to the direct bilge suction or suctions required by paragraph .2.4 a direct emergency bilge suction fitted with a non-return valve shall be led from the largest available independent power driven pump to the drainage level of the machinery space; the suction shall be of the same diameter as the main inlet to the pumps used.

.2.6 The spindles of the sea inlet and direct suction valves shall extend well above the engine-room platform.

.2.7 All bilge suction piping up to the connection to the pumps shall be independent of other piping.

.2.8 The diameter ‘d’ of the main and branch bilge suction pipes shall be calculated according to the following formulae. However, the actual internal diameter may be rounded off to the nearest standard size acceptable to the Administration of the flag State: main bilge suction pipe:

branch bilge suction pipes between collecting boxes and suctions:

where:

.2.9 Provision shall be made to prevent the compartment served by any bilge suction pipe being flooded in the event of the pipe being severed or otherwise damaged by collision or grounding in any other compartment. For this purpose, where the pipe is at any part situated nearer the side of the ship than one fifth of the breadth of the ship (measured at right angles to the centreline at the level of the deepest subdivision load line), or is in a duct keel, a non-return valve shall be fitted to the pipe in the compartment containing the open end.

.2.10 Distribution boxes, cocks and valves in connection with the bilge pumping system shall be so arranged that, in the event of flooding, one of the bilge pumps may be operative on any compartment; in addition, damage to a pump or its pipe connecting to the bilge main outboard of a line drawn at one fifth of the breadth of the ship shall not put the bilge system out of action. If there is only one system of pipes common to all the pumps, the necessary valves for controlling the bilge suctions must be capable of being operated from above the bulkheads deck. Where in addition to the main bilge pumping system an emergency bilge pumping system is provided, it shall be independent of the main system and so arranged that a pump is capable of operating on any compartment under flooding condition as specified in paragraph .2.1; in the case only the valves necessary for the operation of the emergency system need be capable of being operated from above the bulkhead deck.

.2.11 All cocks and valves referred to in paragraph .2.10 which can be operated from above the bulkhead deck shall have their controls at their place of operation clearly marked and shall be provided with means to indicate whether they are open or closed.

.1 Sufficient power for going astern shall be provided to secure proper control of the ship in all normal circumstances.

.2 The ability of the machinery to reverse the direction of thrust of the propeller in sufficient time, and so to bring the ship to rest within a reasonable distance from maximum ahead service speed, shall be demonstrated and recorded.

.3 The stopping times, ship headings and distances recorded on trials, together with the results of trials to determine the ability of ships having multiple propellers to navigate and manoeuvre with one or more propellers inoperative, shall be available on board for use of the master or designated personnel.

.1 Every ship shall be provided with an efficient main and auxiliary steering system. The main steering system and the auxiliary steering system shall be so arranged that the failure of one of them will not render the other one inoperative.

.2 The main steering gear and rudder stock where fitted shall be:

▼M2

▼M1

.3 If fitted, the auxiliary steering gear shall be:

▼M2

▼M1

.4 Steering power units shall be:

.5 Where the main steering gear comprises two or more identical power units, an auxiliary steering gear need not be fitted, provided that:

.6 Steering gear control shall be provided:

.7 Any main and auxiliary steering gear control system operable from the navigating bridge shall comply with the following:

.8 The electrical power circuits and the steering gear control systems with their associated components, cables and pipes required by this Regulation and by Regulation 7 shall be separated as far as is practicable throughout their length.

.9 A means of communication shall be provided between the navigating bridge and the steering gear compartment or alternative steering position.

.10 The angular position of the rudder(s) shall:

.11 Hydraulic power-operated steering gear shall be provided with the following:

.12 The steering gear compartments shall be:

.1 Means for indicating that the motors of electric and electro-hydraulic steering gears are running shall be installed on the navigating bridge and at a suitable main machinery control position.

.2 Each electric or electro-hydraulic steering system comprising one or more power units shall be served by at least two exclusive circuits fed directly from the main switchboard; however, one of the circuits may be supplied through the emergency switchboard. An auxiliary electric or electro-hydraulic steering system associated with a main electric or electro-hydraulic steering system may be connected to one of the circuits supplying this main steering system. The circuits supplying an electric or electro-hydraulic steering system shall have adequate rating for supplying all motors which can be simultaneously connected to them and may be required to operate simultaneously.

.1 Main and auxiliary machinery essential for the propulsion and the safety of the ship shall be provided with effective means for its operation and control.

.2 Where remote control of propulsion machinery from the navigating bridge is provided and the machinery spaces are intended to be manned, the following shall apply:

.3 Where the main propulsion and associated machinery, including sources of main electrical power supply, are provided with various degrees of automatic and remote control and are under continuous manual supervision from a control room the arrangements and controls shall be so designed, equipped and installed that the machinery operation will be as safe and effective as if it were under direct supervision; for this purpose Regulations II-1/E/1 to II-1/E/5 shall apply as appropriate. Particular consideration shall be given to protect such spaces against fire and flooding.

.4 In general, automatic starting, operational and control systems shall include provisions for manually overriding the automatic controls. Failure of any part of such systems shall not prevent the use of the manual override.

.5 Main and auxiliary machinery essential for the propulsion, control and safety shall be provided with effective means for its operation and control. All control systems essential for the propulsion, control and safety of the ship shall be independent or designed such that failure of one system does not degrade the performance of another system.

.6 Where remote control of propulsion machinery from the navigating bridge is provided, the following shall apply:

.7 Where the main propulsion and associated machinery, including sources of main electrical power supply, are provided with various degrees of automatic and remote control and are under continuous manual supervision from a control room the arrangements and controls shall be so designed, equipped and installed that the machinery operation will be as safe and effective as if it were under direct supervision; for this purpose Regulations II-1/E/1 to II-1/E/5 shall apply as appropriate. Particular consideration shall be given to protect such spaces against fire and flooding.

.8 In general, automatic starting, operational and control systems shall include provisions for manually overriding the automatic controls. Failure of any part of such systems shall not prevent the use of the manual override.

.9 On new class B, C and D ships constructed on or after 1 January 2012 the automation systems shall be designed in a manner which ensures that threshold warning of impending or imminent slowdown or shutdown of the propulsion system is given to the officer in charge of the navigational watch in time to assess navigational circumstances in an emergency. In particular, the systems shall control, monitor, report, alert and take safety action to slow down or stop propulsion while providing the officer in charge of the navigational watch an opportunity to manually intervene, except for those cases where manual intervention will result in total failure of the engine and/or propulsion equipment within a short time, for example in the case of overspeed.

.1 Every steam pipe and every fitting connected thereto through which steam may pass shall be so designed, constructed and installed as to withstand the maximum working stresses to which it may be subjected.

.2 Means shall be provided for draining every steam pipe in which dangerous water hammer action might otherwise occur.

.3 If a steam pipe or fitting may receive steam from any source at a higher pressure than that for which it is designed a suitable reducing valve, relief valve and pressure gauge shall be fitted.

.1 Means shall be provided to prevent overpressure in any part of compressed air systems and wherever water jackets or casings of air compressors and coolers might be subjected to dangerous overpressure due to leakage into them from air pressure parts. Suitable pressure relief arrangements shall be provided for all systems.

.2 The main starting air arrangements for main propulsion internal combustion engines shall be adequately protected against the effects of backfiring and internal explosion in the starting air pipes.

.3 All discharge pipes from starting air compressors shall lead directly to the starting air receivers, and all starting pipes from the air receivers to main and auxiliary engines shall be entirely separate from the compressor discharge pipe system.

.4 Provisions shall be made to reduce to a minimum the entry of oil into the air pressure systems and to drain these systems.

.1 Passenger and goods lifts shall, in respect of dimensioning, layout, number of passengers and/or quantity of goods, comply with the provisions laid down by the Administration of the flag State in each individual case or for each type of plant.

.2 Installation drawings and maintenance instructions, including provisions governing periodical inspections, shall be approved by the Administration of the flag State, which shall inspect and approve the plant before it is taken into use.

.3 Following approval, the Administration of the flag State will issue a certificate which is to be kept on board.

.4 The Administration of the flag State may permit the periodical inspections to be carried out by an expert authorised by the Administration, or by a recognised organisation.

.1 Electrical installations shall be such that:

.2 The Administration of the flag State shall take appropriate steps to ensure uniformity of implementation and application of the provision of this part in respect of electrical installations ( 4 ).

.1 New ships of class C and D in which the electrical power is the only power for maintaining the auxiliary services essential for the safety of the ship, and new and existing ships of class B in which the electrical power is the only power for maintaining the auxiliary services essential for the safety and the propulsion of the ship, shall be provided with two or more main generating sets of such power that the aforesaid services can be operated when any one sets is out of service.

In new class C and D ships of less than 24 metres in length, one of the main generating sets may be main propulsion engine driven, provided it is of such power that the aforesaid services can be operated when any one other set is out of service.

.2.1 A main electric lighting system which shall provide illumination throughout those parts of the ship normally accessible to and used by passengers or crew shall be supplied from the main source of electrical power.

.2.2 The arrangement of the main electric lighting system shall be such that a fire or other casualty in spaces containing the main source of electrical power, associated transforming equipment, if any, the main switchboard and the main lighting switchboard, will not render the emergency lighting system, required by Regulation 3, inoperative.

.2.3 The arrangement of the emergency electric lighting system shall be such that a fire or other casualty in spaces containing the emergency source of electrical power, associated transforming equipment, if any, the emergency switchboard and the emergency lighting switchboard will not render the main electric lighting system required by this Regulation inoperative.

.3 The main switchboard shall be so placed relative to one main generating station that, as far as is practicable, the integrity of the normal electrical supply may be affected only by a fire or other casualty in the space where the generating set and the switchboard are installed.

.4 In class B, C and D ships constructed on or after 1 January 2012, supplementary lighting shall be provided in all cabins to clearly indicate the exit so that occupants will be able to find their way to the door. Such lighting, which may be connected to an emergency source of power or have a self-contained source of electrical power in each cabin, shall automatically illuminate when power to the normal cabin lighting is lost and remain on for a minimum of 30 min.

.1 all passenger public spaces and alleyways shall be provided with supplementary electric lighting that can operate for at least three hours when all other sources of electrical power have failed and under any condition of heel. The illumination provided shall be such that the approach to the means of escape can be readily seen. The source of power for the supplementary lighting shall consist of accumulator batteries located within the lighting units that are continuously charged, where practicable, from the emergency switchboard. Alternatively, any other means of lighting which is at least as effective may be accepted by the Administration of the flag State. The supplementary lighting shall be such that any failure of the lamp will be immediately apparent. Any accumulator battery provided shall be replaced at intervals having regards to the specific service life in the ambient conditions that they are subject to in service; and

.2 a portable rechargeable battery operated lamp shall be provided in every crew space alleyway, recreational space and every working space which is normally occupied unless supplementary emergency lighting, as required by paragraph .1 is provided.

.1 Exposed metal parts of electrical machines or equipment which are not intended to be live but which are liable under fault conditions to become live shall be earthed unless the machines or equipment are:

.2 All electrical apparatus shall be so constructed and so installed as not to cause injury when handled or touched in the normal manner.

.3 The sides and the rear and, where necessary, the front of switchboards shall be suitably guarded. Exposed live parts having voltages to earth exceeding the voltage specified under 1.1 shall not be installed on the front of such switchboards. Where necessary, non-conducting mats or gratings shall be provided at the front and rear of the switchboard.

.4 In distribution systems with no connection to earth, a device capable of monitoring the insulation level to earth and giving an audible or visual indication of abnormally low insulation values shall be provided.

.5.1 All metal sheaths and armour of cables shall be electrically continuous and shall be earthed.

.5.2 All electrical cables and wiring external to equipment shall be at least of a flame-retarding type and shall be so installed as not to impair their original flame-retarding properties. Where necessary for particular application the Administration of the flag State may permit the use of special type of cables such as radio frequency cables, which do not comply with the foregoing.

.5.3 Cables and wiring serving essential or emergency power, lighting, internal communications or signals shall so far as practicable be routed clear of galleys, laundries, machinery spaces of category A and their casings and other high fire risk areas. In new and existing ro-ro passenger ships, cabling for emergency alarms and public address systems installed on or after 1 July 1998 shall be approved by the Administration of the flag State having regard to the recommendations developed by the IMO. Cables connecting fire pumps to the emergency switchboard shall be of a fire-resistant type where they pass through high fire risk areas. Where practicable all such cables should be run in such a manner as to preclude their being rendered unserviceable by heating of the bulkheads that may be caused by a fire in an adjacent space.

.6 Cables and wiring shall be installed and supported in such a manner as to avoid chafing or other damage. Terminations and joints in all conductors shall be so made as to retain the original electrical, mechanical flame-retarding and, where necessary, fire resisting.

.7.1 Each separate circuit shall be protected against short circuit and against overload, except as permitted in Regulations II-1/C/6 and II-1/C/7.

.7.2 Lighting fittings shall be so arranged as to prevent temperature rises which could damage the cables and wiring, and to prevent surrounding material from becoming excessively hot.

.8.1 Accumulator batteries shall be suitably housed, and compartments used primarily for their accommodation shall be properly constructed and efficiently ventilated.

.8.2 Electrical or other equipment which may constitute a source of ignition of flammable vapours shall not be permitted in these compartments.

.9 Distribution systems shall be so arranged that fire in any main vertical zone, as is defined in Regulation II-2/A/2.9, will not interfere with services essential for safety in any other such zone. This requirement will be met if main and emergency feeders passing through any such zone are separated both vertically and horizontally as wide as is practicable.

.10 No electrical equipment shall be installed in any space where flammable mixtures are liable to collect, e.g. in compartments assigned principally to accumulator batteries, in paint lockers, acetylene stores or similar spaces, unless the Administration is satisfied that such equipment is:

.1 The arrangements provided shall be such as to ensure that the safety of the ship in all sailing conditions, including manoeuvring, is equivalent to that of a ship having the machinery spaces manned.

.2 Measures shall be taken to ensure that the equipment is functioning in a reliable manner and that satisfactory arrangements are made for regular inspections and routine tests to ensure continuous reliable operation.

.3 Every ship shall be provided with documentary evidence of its fitness to operate with periodically unattended machinery spaces.

.1 Means shall be provided to detect and give alarms at an early stage in case of fires:

.2 Internal combustion engines of 2 250 kW and above or having cylinders of more than 300 mm bore shall be provided with crankcase oil mist detectors or engine bearing temperature monitors or equivalent devices.

.1 Bilge wells in periodically unattended machinery spaces shall be located and monitored in such a way that the accumulation of liquids is detected at normal angles of trim and heel, and shall be large enough to accommodate easily the normal drainage during the unattended period.

.2 Where the bilge pumps are capable of being started automatically, means shall be provided to indicate when the influx of liquid is greater than the pump capacity or when the pump is operating more frequently than would normally be expected. In these cases, smaller bilge wells to cover a reasonable period of time may be permitted. Where automatically controlled bilge pumps are provided, special attention shall be given to oil pollution prevention requirements.

.3 The location of the controls of any valve serving a sea inlet, a discharge below the waterline or a bilge injection system shall be so sited as to allow adequate time for operation in case of influx of water to the space, having regard to the time likely to be required in order to reach and operate such controls. If the level to which the space could become flooded with the ship in the fully loaded condition so requires, arrangements shall be made to operate the controls from a position above such level.

.1 Under all sailing conditions, including manoeuvring, the speed, direction of thrust and, if applicable, the pitch of the propeller shall be fully controllable from the navigating bridge.

.2 Propulsion machinery orders from the navigating bridge shall be indicated in the main machinery control room or at the propulsion machinery control position as appropriate.

.3 Remote control of the propulsion machinery shall be possible only from one location at a time; at such locations interconnected control positions are permitted. At each location there shall be an indicator showing which location is in control of the propulsion machinery. The transfer of control between the navigating bridge and machinery spaces shall be possible only in the main machinery space or in the main machinery control room. The system shall include means to prevent the propelling thrust from altering significantly when transferring control from one location to another.

.4 It shall be possible for all machinery essential for the safe operation of the ship to be controlled from a local position, even in the case of failure in any part of the automatic or remote control systems.

.5 The design of the remote automatic control system shall be such that in case of its failure an alarm will be given. Unless it is considered impracticable, the preset speed and direction of thrust of the propeller shall be maintained until local control is in operation.

.6 Indicators shall be fitted on the navigating bridge for:

.7 The number of consecutive automatic attempts which fail to produce a start shall be limited to safeguard sufficient starting air pressure. An alarm shall be provided to indicate low starting air pressure set at a level which still permits starting operations of the propulsion machinery.

.1 An alarm system shall be provided indicating any fault requiring attention and shall:

.2.1 The alarm system shall be continuously powered and shall have an automatic changeover to a stand-by power supply in case of loss of normal power supply.

.2.2 Failure of the normal power supply of the alarm system shall be indicated by an alarm.

.3.1 The alarm system shall be able to indicate at the same time more than one fault and the acceptance of any alarm shall not inhibit another alarm.

.3.2 Acceptance at the position referred to in paragraph .1 of any alarm condition shall be indicated at the positions where it was shown. Alarms shall be maintained until they are accepted and the visual indications of individual alarms shall remain until the fault has been corrected, when the alarm system shall automatically reset to the normal operating condition.

.1 The main source of electrical power shall comply with the following:

.2 Where stand-by machines are required for other auxiliary machinery essential to propulsion, automatic changeover devices shall be provided.

.1 The control system shall be such that the services needed for the operation of the main propulsion machinery and its auxiliaries are ensured through the necessary automatic arrangements.

.2 An alarm shall be given on the automatic changeover.

.3 An alarm system complying with Regulation 6 shall be provided for all important pressures, temperatures and fluid levels and other essential parameters.

.4 A centralised control position shall be arranged with the necessary alarm panels and instrumentation indicating any alarm.

.5 Means shall be provided to keep the starting air pressure at the required level where internal combustion engines essential for main propulsion are started by compressed air.

.1 The fire safety objectives of this chapter are to:

.2 In order to achieve the fire objectives set out in paragraph .1 the following basic principles underlie the Regulations in this chapter and are embodied in the Regulations as appropriate, having regard to the type of ships and the potential fire hazard involved:

.3 The fire safety objectives set out in paragraph .1 shall be achieved by ensuring compliance with the prescriptive requirements specified in this chapter or by alternative design and arrangements which comply with Part F of the revised Chapter II-2 of SOLAS 1974, which applies to ships constructed on or after 1 January 2003. A ship shall be considered to meet the functional requirements set out in paragraph .2 and to achieve the fire safety objectives set out in paragraph .1 when either:

.4 All ships which undergo repairs, alterations, modifications and outfitting related thereto shall continue to comply with at least the requirements previously applicable to these ships.

Repairs, alterations and modifications which substantially alter the dimensions of a ship or the passenger accommodation spaces, or substantially increase a ship’s service life and outfitting related thereto shall meet the latest requirements for new ships in so far as the Administration of the flag State deems reasonable and practicable.

.5 Notwithstanding the provisions of paragraph .4, existing class B ships carrying more than 36 passengers when undergoing repairs, alterations, modifications and outfitting related thereto shall comply with the following:

.1.1 Every ship shall be provided with fire pumps, fire mains, hydrants, hoses and nozzles complying as applicable with the requirements of this Regulation.

.1.2 Where more than one independent fire pump is required, isolating valves to separate the section of the fire main within the machinery space containing the main fire pump or pumps from the rest of the fire main shall be fitted in an easily accessible and tenable position outside this machinery space. The fire main shall be so arranged that when the isolating valves are shut all the hydrants on the ship, except those in the machinery space referred above, can be supplied with water by a fire pump not located in this machinery space through pipes which do not enter this space. Exceptionally, short lengths of the emergency fire pump suction and discharge piping may penetrate the machinery space if it is impracticable to route it externally provided that the integrity of the fire main is maintained by the enclosure of the piping in a substantial steel casing.

.1.3 Isolating valves to separate the section of the fire main within the machinery space containing the main fire pump or pumps from the rest of the fire main shall be fitted in an easily accessible and tenable position outside the machinery spaces. The fire main shall be so arranged that when the isolating valves are shut all the hydrants on the ship, except those in the machinery space referred to above, can be supplied with water by another pump or an emergency fire pump. The emergency pump, its seawater inlet and suction and delivery pipes and isolating valves shall be located outside the machinery space. If this arrangement cannot be made, the sea-chest may be fitted in the machinery space if the valve is remotely controlled from a position in the same compartment as the emergency pump and the suction pipe is as short as practicable. Short lengths of suction or discharge piping may penetrate the machinery space, provided they are enclosed in a substantial steel casing or are insulated to A-60 standards. The pipes shall have substantial wall thickness, but in no case less than 11 mm and shall be welded except for the flanged connection to the sea inlet valve.

.1 The required fire pumps shall be capable of delivering for fire-fighting purposes a quantity of water, at the pressure specified in paragraph .4.2 not less than two thirds of the quantity required to be dealt with by the bilge pumps when employed for bilge pumping.

.2 In every ship which is required by this Regulation to be provided with more than one power fire pump, each of the required fire pumps shall have a capacity not less than 80 % of the total required capacity divided by the minimum number of required fire pumps but in any case not less than 25 m3/h and each such pump shall in any event be capable of delivering at least the two required jets of water. These fire pumps shall be capable of supplying the fire main system under the required conditions.

.3 In ships constructed on or after 1 January 2003 where more pumps than the minimum required pumps are installed such additional pumps shall have a capacity of at least 25 m3/h and shall be capable of delivering at least the two jets of water required in paragraph .5 of this Regulation.

.1 Ships shall be provided with power driven fire pumps as follows:

.2 Sanitary, ballast, bilge or general service pumps may be accepted as fire pumps, provided that they are not normally used for pumping oil and that if they are subject to occasional duty for the transfer or pumping of oil fuel, suitable changeover arrangements are fitted.

.3 The arrangement of sea connections, fire pumps and their sources of power shall be such as to ensure that in ship certified to carry more than 250 passengers, in the event of a fire in any one compartment all the fire pumps will not be put out of action.

In new class B ships certified to carry up to 250 passengers or less, if a fire in any one compartment could put all the pumps out of action, the alternative means of providing water for fire-fighting purposes shall be an independently driven, power-operated emergency fire pump and with its source of power and sea connection located outside the machinery space. Such an independently driven, power operated emergency fire pump shall comply with the provisions of the Fire Safety Systems Code for ships constructed on or after 1 January 2003.

.4 In new class B ships certified to carry more than 250 passengers, the arrangements for the ready availability of water supply shall be such that at least one effective jet of water is immediately available from any hydrant in an interior location and so as to ensure the continuation of the output of water by the automatic starting of a required fire pump.

.5 In ships with a periodically unattended machinery space or when only one person is required on watch, there shall be immediate water delivery from the fire main system at a suitable pressure, either by remote starting of one of the main fire pumps with remote starting from the navigating bridge and fire control station, if any, or permanent pressurisation of the fire main system by one of the main fire pumps.

.6 The delivery valve of each fire pump shall be fitted with a non-return valve.

.1 The diameter of the fire main and water service pipes shall be sufficient for the effective distribution of the maximum required discharge from two fire pumps operating simultaneously.

.2 With two pumps simultaneously delivering through nozzles specified in paragraph .8 and sufficient hydrants to provide for the quantity of water specified in paragraph .4.1, the following minimum pressures shall be maintained at all hydrants:

.3 The maximum pressure at any hydrant shall not exceed that at which the effective control of a fire hose can be demonstrated.

.1 The number and position of hydrants shall be such that at least two jets of water not emanating from the same hydrant, one of which shall be from a single length of hose, may reach any part of the ship normally accessible to the passengers or crew while the ship is being navigated and any part of any cargo space when empty, any ro-ro cargo space or any special category space in which latter case the two jets shall reach any part of such space, each from a single length of hose. Furthermore, such hydrants shall be positioned near the accesses to the protected spaces.

.2 In the accommodation, service and machinery spaces the number and position of the hydrants shall be such that the requirements of paragraph .5.1 may be complied with when all watertight doors and all doors in main vertical zone bulkheads are closed.

.3 Where access is provided to a machinery space at a low level from an adjacent shaft tunnel, two hydrants shall be provided external to, but near the entrance to that machinery space. Where such access is provided from other spaces, in one of those spaces two hydrants shall be provided near the entrance of the machinery space. Such provision need not be made where the tunnel or adjacent spaces are not part of the escape route.

.1 Materials readily rendered ineffective by heat shall not be used for fire mains and hydrants unless adequately protected. The pipes and hydrants shall be so placed that the fire hoses may be easily coupled to them. The arrangement of pipes and hydrants shall be such as to avoid the possibility of freezing. In ships where deck cargo may be carried, the positions of the hydrants shall be such that they are always readily accessible and the pipes shall be arranged as far as practicable to avoid risk of damage by such cargo.

.2 A valve shall be fitted to serve each fire hose so that any fire hose may be removed while the fire pumps are at work.

.3 In ships constructed on or after 1 January 2003 isolating valves shall be installed for all open deck fire main branches used for purposes other than fire-fighting.

.1 Fire hoses shall be of non-perishable material, approved by the Administration of the flag State, and shall be sufficient in length to project a jet of water to any of the spaces in which they may be required to be used. Each hose shall be provided with a nozzle and the necessary couplings. There shall be complete interchangeability of hose couplings and nozzles. Hoses specified in this chapter as ‘fire hoses’ shall together with any necessary fittings and tools, be kept ready for use in conspicuous positions near the water service hydrants or connections. Additionally, in interior locations in ships carrying more than 36 passengers, fire hoses shall be permanently connected to the hydrants.

.2 There shall be at least one fire hose for each of the hydrants required by paragraph .5. The length of a fire hose should be restricted to not more than 20 metres on deck and in superstructures and to 15 metres in machinery spaces and on smaller ships respectively to 15 metres and 10 metres.

.1.1 For the purposes of this chapter, standard nozzle sizes shall be 12 mm, 16 mm and 19 mm or as near thereto as possible. In cases where other systems are used — such as fog systems — different diameter nozzles may be permitted.

.1.2 All nozzles shall be of an approved dual-purpose type (i.e., spray/jet type), and shall have a shutoff facility.

.2 For accommodation and service spaces, a nozzle size greater than 12 mm need not be used,

.3 For machinery spaces and exterior locations, the nozzle size shall be such as to obtain the maximum discharge possible from two jets at the pressure mentioned in paragraph .4 from the smallest pump, provided that a nozzle size greater than 19 mm need not be used.

.1 One independent fire pump is required, which shall be capable of delivering for fire-fighting purposes at least one jet of water from any fire hydrant, at the pressure specified below. The quantity of water so delivered is not to be less than two thirds of the quantity required to be dealt with by the bilge pumps when employed for bilge pumping. Such fire pump shall be capable, when discharging the maximum amount referred to above through fire hydrants with nozzles of 12 or 16 or 19 mm, of maintaining at any hydrant minimum pressures as required in class B ships.

.2 Every ship carrying over 250 passengers shall be provided with an additional fire pump which shall be permanently connected to the fire main. Such pump shall be operated by power. Such pump and its source of power shall not be situated in the same compartment as the pump required by paragraph .9.1 and shall be provided with a permanent sea connection situated outside the machinery space. Such pump shall be capable of delivering at least one jet of water from any fire hydrants provided in the ship maintaining a pressure of at least 0,3 N/mm2.

.3 Sanitary, ballast, bilge or general service pumps may be accepted as fire pumps.

.4 Every ship shall be provided with a fire main having a diameter sufficient for the effective distribution of the maximum discharge given above. The number and position of the hydrants shall be such that at least one jet of water may reach any part of the ship using one single max. length of hose as given for class B ships in paragraph .7.2.

.5 Every ship shall be fitted with at least one fire hose for every hydrant fitted.

.6 In ships with a periodically unattended machinery space or when only one person is required on watch, there shall be immediate water delivery from the fire main system at a suitable pressure, either by remote starting of one of the main fire pumps with remote starting from the navigating bridge and fire control station, if any, or permanent pressurisation of the fire main system by one of the main fire pumps.

.7 The delivery valve of each fire pump shall be fitted with a non-return valve.

.1 The necessary pipes for conveying fire-extinguishing medium into protected spaces shall be provided with control valves so marked as to indicate clearly the spaces to which the pipes are led. Suitable provision shall be made to prevent inadvertent admission of the medium to any space.

.2 The piping for the distribution of fire-extinguishing medium shall be arranged and discharge nozzles so positioned that a uniform distribution of medium is obtained.

.3 Means shall be provided to close from outside the protected spaces all openings which may admit air to or allow gas to escape from the protected space.

.4 Means shall be provided for automatically giving audible warning of the release of fire-extinguishing medium into any space in which personnel normally work or to which they have access. The alarm shall operate for a suitable period before the medium is released.

.5 The means of control of any fixed gas fire-extinguishing system shall be readily accessible and simple to operate and shall be grouped together in as few locations as possible at positions not likely to be cut off by a fire in a protected space. At each location there shall be clear instructions relating to the operation of the system having regard to the safety of personnel.

.6 Automatic release of fire-extinguishing medium shall not be permitted, except as permitted in respect of local automatically operated units fitted, in addition to and independent of any required fixed fire-extinguishing system, in machinery spaces over equipment having a high fire risk or in enclosed areas of high fire risk within machinery spaces.

.7 Where the quantity of extinguishing medium is required to protect more than one space, the quantity of medium available need not be more than the largest quantity required for any one space so protected.

.8 Except as otherwise permitted, pressure containers required for the storage of fire-extinguishing medium, shall be located outside protected spaces in accordance with paragraph .1.11.

.9 Means shall be provided for the crew or shore personnel to safely check the quantity of medium in the containers.

.10 Containers for the storage of fire extinguishing medium and associated pressure components shall be designed to appropriate codes of practice having regard to their locations and maximum ambient temperatures expected in service.

.11 When the fire-extinguishing medium is stored outside a protected space, it shall be stored in a room which shall be situated in a safe and readily accessible position and shall be effectively ventilated. Any entrance to such a storage room shall preferably be from the open deck and in any case shall be independent of the protected space.

Access doors shall open outwards, and bulkheads and decks including doors and other means of closing any opening therein, which form the boundaries between such rooms and adjoining enclosed spaces shall be gastight. For the purpose of application of the tables for fire integrity of bulkheads and decks in Regulations II-2/B/4 or II-2/B/5, as applicable, such storage rooms shall be treated as control stations.

.12 The use of a fire-extinguishing medium, which either by itself or under expected conditions of use gives off toxic gases in such quantities as to endanger persons or gives off gases which are harmful to the environment, in fire-extinguishing systems on board new ships and in such new installations on board existing ships, is not permitted.

.13 Fixed gas fire-extinguishing systems shall comply with the provisions of the Fire Safety Systems Code.

.14 Means shall be provided to close from outside the protected space all openings which may admit air to or allow gas escape from the protected space.

.15 When the fire-extinguishing medium is stored outside a protected space, it shall be stored in a room which is located behind the forward collision bulkhead and is used for no other purposes. Any entrance to such a storage room shall preferably be from the open deck and shall be independent of the protected space. If the storage place is located below deck, it shall be located no more than one deck below the open deck and shall be directly accessible by a stairway or ladder from the open deck.

Spaces which are located below deck or spaces where access from the open deck is not provided shall be fitted with a mechanical ventilation system designed to take exhaust air from the bottom of the space and shall be sized to provide at least 6 air changes per hour. Access doors shall open outwards and bulkheads and decks including doors and other means of closing any opening therein, which form boundaries between such rooms and adjacent enclosed spaces, shall be gastight. For the purpose of the application of tables 4.1, 4.2, 5.1 and 5.2, in Part B of this Chapter, such storage rooms shall be treated as fire control stations.

.16 Where the volume of free air contained in air receivers in any space is such that, if released in such space in the event of fire, such release of air within that space would seriously affect the efficiency of the fixed fire-extinguishing system, an additional quantity of fire-extinguishing medium shall be provided.

.17 Suppliers of fixed fire-extinguishing installations shall provide a description of the installation, including a checklist for maintenance, in English and in the official language(s) of the flag State.

.18 The quantity of the fire-extinguishing medium shall be checked at least once a year by either an expert authorised by the Administration, the supplier of the installation or a recognised organisation.

.19 The periodic checking which is carried out by the ship’s chief engineer or organised by the ship’s management shall be entered in the ship’s logbook stating the scope and the time of such checking.

.20 Non-prescribed fire extinguishing equipment which is installed e.g. in store rooms shall, in its construction and dimensioning, comply with the provisions of this Regulation for the type of installation in question.

.21 All doors to spaces protected by CO2 installation shall be marked ‘This space is protected by a CO2 installation and shall be evacuated when the alarm equipment comes into operation’.

.1.1 For cargo spaces the quantity of CO2 available shall, unless otherwise provided, be sufficient to give a minimum volume of free gas equal to 30 % of the gross volume of the largest cargo space so protected in the ship.

If there is a connection through ventilation ducts between two or more cargo spaces, these shall be considered one space. In ships used for the carriage of vehicles, the necessary quantity of CO2 shall be calculated as 45 % of the gross cubic content of the largest cargo space.

.1.2 For machinery spaces the quantity of carbon dioxide carried shall be sufficient to give a minimum volume of free gas equal to the larger of the following volumes, either:

.2 For the purpose of this paragraph the volume of free carbon dioxide shall be calculated at 0,56 m3/kg.

.3 The fixed piping system shall be such that 85 % of the gas can be discharged into the space within 2 min.

.4 Release mechanism of carbon dioxide:

.5 The Administration of the flag State shall ensure that the spaces in which the CO2 batteries are located will be properly arranged as regards their access, ventilation and communication equipment. It shall take the necessary safety measures regarding the construction, installation, marking, filling and testing of CO2 cylinders, pipes and fittings, and for the control and alarm equipment for such installation.

.6 Carbon dioxide systems shall comply with the provisions of the Fire Safety Systems Code.

.7 The Administration of the flag State shall ensure that the spaces in which the CO2 batteries are located will be properly arranged as regards their access, ventilation and communication equipment. It shall take the necessary safety measures regarding the construction, installation, marking, filling and testing of CO2, cylinders piping and fittings and for control and alarm equipment for such installation.

.1 Where in any machinery space a fixed low-expansion foam fire-extinguishing system is fitted in addition to the requirements of Regulation 6, such system shall be capable of discharging through fixed discharge outlets in not more than five minutes a quantity of foam sufficient to cover to a depth of 150 mm the largest single area over which oil fuel is liable to spread. The system shall be capable of generating foam suitable for extinguishing oil fires. Means shall be provided for effective distribution of the foam through a permanent system of piping and control valves or cocks to suitable discharge outlets and for the foam to be effectively directed by fixed sprayers on other main fire hazards in the protected space. The expansion ratio of the foam shall not exceed 12 to 1.

.2 The means of control of any such systems shall be readily accessible and simple to operate and shall be grouped together in as few locations as possible at positions not likely to be cut off by a fire in the protected space.

.3 Fixed low-expansion foam fire-extinguishing systems in machinery spaces shall comply with the provisions of the Fire Safety Systems Code.

.1 Any required fixed high-expansion foam system in machinery spaces shall be capable of rapidly discharging through fixed discharge outlets a quantity of foam sufficient to fill the greatest space to be protected at a rate of at least 1 metre in depth per minute. The quantity of foam-forming liquid available shall be sufficient to produce a volume of foam equal to five times the volume of the largest space to be protected. The expansion ratio of the foam shall not exceed 1 000 to 1.

.2 Supply ducts for delivering foam, air intakes to the foam generator and the number of foam-producing units shall be such as will provide effective foam production and distribution.

.3 The arrangement of the foam generator delivery ducting shall be such that a fire in the protected space will not affect the foam generating equipment.

.4 The foam generator, its sources of power supply, foam forming liquid and means of controlling the system shall be readily accessible and simple to operate and shall be grouped in as few locations as possible at positions not likely to be cut off by a fire in the protected space.

.5 Fixed high expansion foam fire-extinguishing systems in machinery spaces shall comply with the provisions of the Fire Safety Systems Code.

.1 Any required fixed pressure water-spraying fire-extinguishing system in machinery spaces shall be provided with spraying nozzles of an approved type.

.2 The number and arrangement of the nozzles shall be such as to ensure an effective average distribution of water of at least 5 litres/m2 per minute in the spaces to be protected. Increased application rates may be considered if necessary for particular hazardous areas. Nozzles shall be fitted above bilges, tank tops and other areas over which oil fuel is liable to spread and also above other specific fire hazards in the machinery spaces.

.3 The system may be divided into sections, the distribution valves of which shall be operated from easily accessible positions outside the spaces to be protected and will not be readily cut off by a fire in the protected space.

.4 The system shall be kept charged at the necessary pressure and the pump supplying the water for the system shall be put automatically into action by a pressure drop in the system.

.5 The pump shall be capable of simultaneously supplying at the necessary pressure all sections of the system in any one compartment to be protected. The pump and its controls shall be installed outside the space or spaces to be protected. It shall not be possible for a fire in the space or spaces protected by the water-spraying system to put the system out of action.

.6 Precautions shall be taken to prevent the nozzles from becoming clogged by impurities in the water or corrosion of piping, nozzles, valves and pump.

.7 The pump may be driven by an independent internal combustion machinery but, if it is dependent upon power being supplied from the emergency generator fitted in compliance with the provisions of Part D of Chapter II-1, that generator shall be so arranged as to start automatically in case of main power failure so that power for the pump required by paragraph .5 is immediately available. When the pump is driven by independent internal combustion machinery it shall be so situated that a fire in the protected space will not affect the air supply to the machinery.

.8 Fixed pressure water-spraying fire-extinguishing systems in machinery spaces shall comply with the provisions of the Fire Safety Systems Code.

.1 All fire extinguishers shall be of approved types and designs.

.2 The capacity of required portable fluid extinguishers shall be not more than 13,5-litre and not less than 9 litres. Other extinguishers shall be at least as portable as the 13,5-litre fluid extinguisher and shall have a fire-extinguishing capability at least equivalent to that of a 9-litre fluid extinguisher.

.3 Spare charges shall be carried for 50 % of the total of each type of extinguisher on board. Another extinguisher of the same type is a spare charge for an extinguisher which cannot be readily recharged on board.

.4 In general, portable CO2 fire extinguishers shall not be located in accommodation spaces. Where such extinguishers are provided in radio rooms, at switchboards and other similar positions, the volume of any space containing one or more extinguishers shall be such as to limit the concentration of vapour that can occur due to discharge to not more than 5 % of the net volume of the space for the purpose of this Regulation. The volume of CO2 shall be calculated at 0,56 m3/kg.

.5 Portable fire extinguishers shall comply with the provisions of the Fire Safety Systems Code.

.6 Carbon dioxide fire extinguishers shall not be placed in accommodation spaces. In control stations and other spaces containing electrical or electronic equipment or appliances necessary for the safety of the ship, fire extinguishers should be provided whose extinguishing media are neither electrically conductive nor harmful to the equipment and appliances.

.7 Fire extinguishers shall be situated ready for use at easily visible places, which can be reached quickly and easily at any time in the event of a fire and in such a way that their serviceability is not impaired by the weather, vibration or other external factors. Portable fire extinguishers shall be provided with devices which indicate whether they have been used.

.8 Spare charges shall be provided for 100 % of the first 10 extinguishers and 50 % of the remaining fire extinguishers capable of being recharged on board.

.9 For the extinguishers which cannot be recharged on board, additional portable fire extinguishers of the same quantity, type, capacity and number as determined in paragraph .13 below shall be provided in lieu of spare charges.

.10 Fire extinguishers containing an extinguishing medium which either by itself or under expected conditions of use gives off toxic gases in such quantities as to endanger persons or gives off gases which are harmful to the environment shall not be permitted.

.11 The fire extinguishers shall be suitable for extinguishing fires which are possible in the vicinity of the fire extinguisher location.

.12 One of the portable fire extinguishers intended for use in any space shall be located near the entrance of that space.

.13 The minimum number of fire extinguishers shall be as follows:

.14 Portable fire extinguishers provided for use in accommodation or service spaces shall so far as practicable have a uniform method of operation.

.15 Periodic inspection of fire extinguishers:

the Administration of the Flag State shall ensure that portable fire extinguishers shall be periodically inspected, function-tested and pressure-tested.

.1 any one of the following fixed fire-extinguishing systems:

.2 at least one set of portable air-foam equipment consisting of an air-foam nozzle of an inductor type capable of being connected to the fire main by a fire hose, together with a portable tank containing at least 20 litres of foam-making liquid and one spare tank. The nozzle shall be capable of producing effective foam suitable for extinguishing an oil fire, at a rate of at least 1,5 m3 per min.

.3 In each such space, approved foam-type fire extinguishers, each of at least 45 litres capacity, or equivalent, sufficient in number to enable foam or its equivalent to be directed on to any part of the fuel and lubricating oil pressure systems, gearing and other fire hazards. In addition, there shall be provided a sufficient number of portable foam extinguishers or equivalent which shall be so located that no point in the space is more than 10 metres walking distance from an extinguisher and that there are at least two such extinguishers in each such space.

.4 one of the fixed fire-extinguishing systems specified in paragraph .1 above, and in addition in any space containing internal combustion engines, or oil fuel settling tanks or oil-fuel units, one foam fire-extinguisher of at least 45 litres capacity, or equivalents sufficient in number to enable foam or its equivalent to be directed on to any part of the fuel and lubricating oil pressure systems, gearing and other fire hazards, and

.5 one portable fire extinguisher suitable for extinguishing oil fires for each 746 kW or part thereof of such machinery; provided that not less than two nor more than six such extinguishers shall be required in any such space.

The use of low expansion foam fixed system in lieu of some of the six portable fire extinguishers required by this Regulation is permitted.

.6 Each machinery space shall be provided with two suitable water fog applicators which might consist of a metal L-shaped pipe, the long limb being about 2 min length, capable of being fitted to a fire hose, and the short limb being about 250 mm in length, fitted with a fixed water fog nozzle or capable of being fitted with a water spray nozzle.

.7 When heated oil is used as heating medium, it may be additionally required that boiler rooms are equipped with permanently-installed or portable equipment for local systems for jet spraying of water under pressure or the spreading of foam above and below the floor for fire-extinguishing purposes.

.8

.1 The number of skylights, doors, ventilators, openings in funnels to permit exhaust ventilation and other openings to machinery spaces shall be reduced to a minimum consistent with the needs of ventilation and the proper and safe working of the ship.

.2 Skylights shall be of steel and shall not contain glass panels. Suitable arrangements shall be made to permit the release of smoke in the event of fire, from the space to be protected.

.3 Doors other than power-operated watertight doors, shall be so arranged that positive closure is assured in case of fire in the space, by power-operated closing arrangements or by the provision of self-closing doors capable of closing against an inclination of 3,5° opposing closure and having a fail-safe hold-back facility, provided with a remotely operated release device.

.4 Windows shall not be fitted in machinery space boundaries. This does not preclude the use of glass in control rooms within the machinery spaces.

.5 Means of control shall be provided for:

.6 The controls required in paragraph .5 and Regulation II-2/A/10.2.5 shall be located outside the space concerned, where they will not be cut off in the event of fire in the space they serve. Such controls and the controls for any required fire-extinguishing system shall be situated at one control position or grouped in as few positions as possible. Such positions shall have a safe access from the open deck.

.7 When access to any machinery space of category A is provided at a low level from an adjacent shaft tunnel, there shall be provided in the shaft tunnel, near the watertight door, a light steel fire-screen door operable from each side.

.1 Any required automatic sprinkler, fire detection and fire alarm system shall be capable of immediate operation at all times and no action by the crew shall be necessary to set it in operation. It shall be of the wet pipe type but small exposed sections may be of the dry pipe type where this is a necessary precaution. Any parts of the system which may be subjected to freezing temperatures in service shall be suitably protected against freezing. It shall be kept charged at the necessary pressure and shall have provision for a continuous supply of water as required in this Regulation.

.2 Each section of sprinklers shall include means for giving a visual and audible alarm signal automatically at one or more indicating units whenever any sprinkler comes into operation. Such units shall indicate in which section served by the system fire has occurred and shall be centralised on the navigation bridge and in addition, visible and audible alarms from the unit shall be placed in a position other than on the navigating bridge so as to ensure that the indication of fire is immediately received by the crew. The alarm system shall be such as to indicate if any fault occurs in the system.

.3 Sprinklers shall be grouped into separate sections, each of which shall contain not more than 200 sprinklers. Any section of sprinklers shall not serve more than two decks and shall not be situated in more than one main vertical zone, unless it can be demonstrated that arrangements with a section of sprinklers serving more than two decks or situated in more than one main vertical zone will not reduce the protection of the ship against fire.

.4 Each section of sprinklers shall be capable of being isolated by one stop valve only. The stop valve in each section shall be readily accessible and its location shall be clearly and permanently indicated. Means shall be provided to prevent the operation of the stop valves by any unauthorised person.

.5 A gauge indicating the pressure in the system shall be provided at each section stop valve and at a central station.

.6 The sprinklers shall be resistant to corrosion by marine atmosphere. In accommodation and service spaces the sprinklers shall come into operation within the temperature range from 68 to 79 °C, except that in locations such as drying rooms, where high ambient temperatures might be expected, the operating temperature may be increased by not more than 30 °C above the maximum deckhead temperature.

.7 A list or plan shall be displayed at each indicating unit showing the spaces covered and the location of the zone in respect of each section. Suitable instructions for testing and maintenance shall be available.

.8 Sprinklers shall be placed in an overhead position and spaced in a suitable pattern to maintain an average application rate of not less than 5 litres/m2 per minute over the nominal area covered by the sprinklers.

Sprinklers shall be placed as clear as possible of beams or other objects likely to obstruct the projections of water and in such positions that combustible material in the space will be well sprayed.

.9 A pressure tank having a volume equal to at least twice that of the charge of water specified in this paragraph shall be provided. The tank shall contain a standing charge of fresh water, equivalent to the amount of water which would be discharged in one minute by the pump referred to in paragraph .12, and the arrangements shall provide for maintaining an air pressure in the tank such as to ensure that where the standing charge of fresh water in the tank has been used the pressure will be not less than the working pressure of the sprinkler, plus the pressure exerted by a head of water measured from the bottom of the tank to the highest sprinkler in the system. Suitable means of replenishing the air under pressure and of replenishing the fresh water charge in the tank shall be provided. A glass gauge shall be provided to indicate the correct level of the water in the tank.

.10 Means shall be provided to prevent the passage of seawater into the tank. The pressure tank shall be fitted with an efficient relief valve and a pressure gauge. Stop valves or cocks shall be provided at each of the gauge connections.

.11 An independent power pump shall be provided solely for the purpose of continuing automatically the discharge of water from the sprinklers. The pump shall be brought into action automatically by the pressure drop in the system before the standing fresh water charge in the pressure tank is completely exhausted.

.12 The pump and the piping system shall be capable of maintaining the necessary pressure at the level of the highest sprinkler to ensure a continuous output of water sufficient for the simultaneous coverage of a minimum area of 280 m2 at the application rate specified in paragraph .8. For new class C and D ships of less than 40 metres in length with a total protected area of less than 280 m2, the Administration may specify the appropriate area for sizing of pumps and alternative supply components.

.13 The pump shall have fitted on the delivery side a test valve with a short open-ended discharge pipe. The effective area through the valve and the pipe shall be adequate to permit the release of the required pump output while maintaining the pressure in the system specified in paragraph .9.

.14 The sea inlet to the pump shall wherever possible be in the space containing the pump and shall be so arranged that when the ship is afloat it will not be necessary to shut off the supply of seawater to the pump for any purpose other than the inspection or repair of the pump.

.15 The sprinkler pump and tank shall be situated in a position reasonably remote from any machinery space and shall not be situated in any space required to be protected by the sprinkler system.

.16 There shall be not less than two sources of power supply for the seawater pump and automatic alarm and detection system. Where the sources of power for the pump are electrical, these shall be a main generator and an emergency source of power. One supply for the pump shall be taken from the main switchboard, and one from the emergency switchboard by separate feeders reserved solely for that purpose. The feeders shall be so arranged as to avoid galleys, machinery spaces and other enclosed spaces of high fire risk except in so far as it is necessary to reach the appropriate switchboards, and shall be run to an automatic changeover switch situated near the sprinkler pump. This switch shall permit the supply of power from the main switchboard so long as a supply is available therefrom, and to be so designed that upon failure of that supply it will automatically change over to the supply from the emergency switchboard. The switches on the main switchboard and the emergency switchboard shall be clearly labelled and normally kept closed. No other switch shall be permitted in the feeders concerned. One of the sources of power supply for the alarm and detection system shall be an emergency source. Where one of the sources of power for the pump is an internal combustion engine it shall, in addition to complying with the provisions of paragraph .15, be so situated that a fire in any protected space will not affect the air supply to the machinery.

.17 The sprinkler system shall have a connection from the ship’s fire main by way of a lockable screw-down non-return valve at the connection which will prevent a backflow from the sprinkler system to the fire main.

.18 A test valve shall be provided for testing the automatic alarm for each section of sprinklers by a discharge of water equivalent to the operation of one sprinkler. The test valve for each section shall be situated near the stop valve for that section.

.19 Means shall be provided for testing the automatic operation of the pump on reduction of pressure in the system.

.20 Switches shall be provided at one of the indicating positions referred to in paragraph .2 which will enable the alarm and the indicators for each section of sprinklers to be tested.

.21 At least 6 spare sprinkler heads shall be provided for each section.

.22 The automatic sprinkler, fire detection and fire alarm systems shall be of an approved type, complying with the provisions of the Fire Safety System Code.

.23 For new C and D class ships of less than 40 metres in length and with a total protected area of less than 280 m2 the Administration may specify the appropriate area for sizing of pumps and alternative components.

.1 Any required fixed fire detection and fire alarm system with manually operated call points shall be capable of immediate operation at all times.

.2 Power supplies and electric circuits necessary for the operation of the system shall be monitored for loss of power or fault conditions as appropriate. Occurrence of a fault condition shall initiate a visual and audible fault signal at the control panel which shall be distinct from a fire signal.

.3 There shall be not less than two sources of power supply for the electrical equipment used in the operation of the fire detection and fire alarm system, one of which shall be an emergency source. The supply shall be provided by separate feeders reserved solely for that purpose. Such feeders shall run to an automatic changeover switch situated in or adjacent to the control panel for the fire detection system.

.4 Detectors and manually operated call points shall be grouped into sections. The activation of any detector or manually operated call point shall initiate a visual and audible fire signal at the control panel and indicating units. If the signals have not received attention within 2 minutes an audible alarm shall be automatically sounded throughout the crew accommodation and service spaces, control stations and machinery spaces. This alarm sounder system need not be an integral part of the detection system.

.5 The control panel shall be located on the navigating bridge or in the main fire control station.

.6 Indicating units shall, as a minimum, denote the section in which a detector or manually operated call point has operated. At least one unit shall be so located that it is easily accessible to responsible members of the crew at all times, when at sea or in port, except when the ship is out of service. One indicating unit shall be located on the navigating bridge if the control panel is located in the main fire control station.

.7 Clear information shall be displayed on or adjacent to each indicating unit about the spaces covered and the location of the sections.

.8 Where the fire detection system does not include means of remotely identifying each detector individually, no section covering more than one deck within accommodation, service and control stations shall normally be permitted except a section which covers an enclosed stairway. In order to avoid delay in identifying the source of fire, the number of enclosed spaces included in each section shall be limited as determined by the Administration of the flag State. In no case shall more than 50 enclosed spaces be permitted in any section. If the detection system is fitted with remotely and individually identifiable fire detectors, the sections may cover several decks and serve any number of enclosed spaces.

.9 If there is no fire detection system capable of remotely and individually identifying each detector, a section of detectors shall not serve spaces on both sides of the ship nor on more than one deck and neither shall it be situated in more than one main vertical zone except that the Administration of the flag State, if it is satisfied that the protection of the ship against fire will not thereby be reduced, may permit such a section of detectors to serve both sides of the ship and more than one deck. In ships fitted with individually identifiable fire detectors, a section may serve spaces on both sides of the ship and on several decks but may not be situated in more than one main vertical zone.

.10 A section of fire detectors which covers a control station, a service space or an accommodation space shall not include a machinery space.

.11 Detectors shall be operated by heat, smoke or other products of combustion, flame or any combination of these factors. Detectors operated by other factors indicative of incipient fires may be considered by the Administration of the flag State provided that they are not less sensitive than such detectors. Flame detectors shall only be used in addition to smoke or heat detectors.

.12 Suitable instructions and component spares for testing and maintenance shall be provided.

.13 The function of the detection system shall be periodically tested to the satisfaction of the Administration of the flag State by means of equipment producing hot air at the appropriate temperature, or smoke or aerosol particles having the appropriate range of density or particle size, or other phenomena associated with incipient fires to which the detector is designed to respond.

All detectors shall be of a type such that they can be tested for correct operation and restored to normal surveillance without the renewal of any component.

.14 The fire detection system shall not be used for any other purpose, except that closing of fire doors and similar functions may be permitted at the control panel.

.15 Fire detection systems with a zone address identification capability shall be so arranged that:

.1 Manually operated call points shall be installed throughout the accommodation spaces, service spaces and control stations. One manually operated call point shall be located at each exit. Manually operated call points shall be readily accessible in the corridors of each deck such that no part of the corridor is more than 20 metres from a manually operated call point.

.2 Smoke detectors shall be installed in all stairways, corridors and escape routes within accommodation spaces.

.3 Where a fixed fire detection and fire alarm is required for the protection of spaces other than those specified in paragraph .2.2 above, at least one detector complying with paragraph .1.11 shall be installed in each such space.

.4 Detectors shall be located for optimum performance. Positions near beams and ventilation ducts or other positions where patterns of airflow could adversely affect performance and positions where impact or physical damage is likely, shall be avoided. In general, detectors which are located on the overhead shall be a minimum distance of 0,5 metres away from bulkheads.

.5 The maximum spacing of detectors shall be in accordance with the table below:

The Administration of the flag State may require or permit other spaces based upon test data which demonstrate the characteristics of the detectors.

.6 Electrical wiring which forms part of the system shall be so arranged as to avoid galleys, machinery spaces, and other enclosed spaces of high fire risk except where it is necessary to provide for fire detection or fire alarm in such spaces or to connect to the appropriate power supply.

.1 The system and equipment shall be suitably designed to withstand supply voltage variation and transients, ambient temperature changes, vibration, humidity, shock, impact and corrosion normally encountered in ships.

.2 Smoke detectors to be installed in stairways, corridors and escape routes within accommodation spaces as required by paragraph .2.2 shall be certified to operate before the smoke density exceeds 12,5 % obscuration per metre, but not until the smoke density exceeds 2 % obscuration per metre.

Smoke detectors to be installed in other spaces shall operate within sensitivity limits to the satisfaction of the Administration of the flag State having regard to the avoidance of detector insensitivity or oversensitivity.

.3 Heat detectors shall be certified to operate before the temperature exceeds 78 °C but not until the temperature exceeds 54 °C, when the temperature is raised to those limits at a rate less than 1 °C per minute. At higher rates of temperature rise, the heat detector shall operate within temperature limits to the satisfaction of the Administration of the flag State having regard to the avoidance of detector insensitivity or oversensitivity.

.4 The permissible temperature of operation of heat detectors may be increased to 30 °C above the maximum deckhead temperature in drying rooms and similar spaces of a normal high ambient temperature.

.4.1 The fixed fire detection and fire alarm systems shall be of an approved type, complying with the provisions of the Fire Safety Systems Code.

.4.2 Manually operated call points complying with the Fire Safety Systems Code shall be installed throughout the accommodation spaces, service spaces and control stations. One manually operated call point shall be located at each exit. Manually operated call points shall be readily accessible in the corridors of each deck such that no part of the corridor is more than 20 metres from a manually operated call point.

.5 In addition to the above provisions, the Administration of the flag State shall ensure that safety provisions on the installations regarding their independence from other installations or systems, the corrosion resistance of their components, the electrical power supply to their control system, and the availability of instructions for their operation and maintenance shall be complied with.

.1 Except as otherwise permitted by this paragraph, no oil fuel with a flashpoint of less than 60 °C shall be used.

.2 In emergency generators, oil fuel with a flashpoint of not less than 43 °C may be used.

.3 Subject to such additional precautions as it may consider necessary and on condition that the ambient temperature of the space in which such oil fuel is stored or used shall not be allowed to rise to within 10 °C below the flashpoint of the oil fuel, the Administration of the flag State may permit the general use of oil fuel having a flashpoint of less than 60 °C but not less than 43 °C.

For ships constructed on or after 1 January 2003 oil fuel having a flashpoint of less than 60 °C but not less than 43 °C may be permitted subject to the following:

The flashpoint of oils shall be determined by an approved closed cup method.

.1.1 As far as practicable, parts of the oil fuel system containing heated oil under pressure exceeding 0,18 N/mm2 shall not be placed in a concealed position such that defects and leakage cannot readily be observed. The machinery spaces in way of such parts of the oil fuel system shall be adequately illuminated.

.1.2 By heated oil is meant oil the temperature of which after heating is higher than 60 °C or higher than the current flashpoint of the oil, if this is lower than 60 °C.

.2 The ventilation of machinery spaces shall be sufficient under all normal conditions to prevent accumulation of oil vapour.

.3 As far as practicable, oil fuel tanks shall be part of the ship’s structure and shall be located outside machinery spaces. Where oil fuel tanks, other than double bottom tanks, are necessarily located adjacent to or within machinery spaces, at least one of their vertical sides shall be contiguous to the machinery space boundaries, and shall preferably have a common boundary with the double bottom tanks, and the area of the tank boundary common with the machinery spaces shall be kept to a minimum. Where such tanks are situated within the boundaries of machinery spaces they shall not contain oil fuel having a flashpoint of less than 60 °C. The use of freestanding oil fuel tanks shall be avoided and shall be prohibited in machinery spaces.

.4 No oil fuel tank shall be situated where spillage or leakage therefrom can constitute a hazard by falling on heated surfaces. Precautions shall be taken to prevent any oil that may escape under pressure from any pump, filter or heater from coming into contact with heated surfaces.

.5 Every oil fuel pipe, which, if damaged, would allow oil to escape from a storage, settling or daily service tank, having a capacity of 500 litres or above, situated above the double bottom, shall be fitted with a cock or valve directly on the tank capable of being closed from a safe position outside the space concerned in the event of a fire occurring in the space in which such tanks are situated. In the special case of deep tanks situated in any shaft or pipe tunnel or similar space, valves on the tank shall be fitted but control in the event of fire may be effected by means of an additional valve on the pipe or pipes outside the tunnel or similar space. If such additional valve is fitted in the machinery space it shall be operated from a position outside this space.

.6 Safe and efficient means of ascertaining the amount of oil fuel contained in any oil fuel tank shall be provided.

.7 Provisions shall be made to prevent overpressure in any oil tank or in any part of the oil fuel system, including the filling pipes served by pumps on board. Any relief valves and air or overflow pipes shall discharge to a position where there is no risk of fire or explosion from the emergence of oils and vapour and shall not lead into crew spaces, passenger spaces nor into special category spaces, closed ro-ro spaces, machinery spaces or similar spaces, situated in ships constructed on or after 1 January 2003.

.8 Oil fuel pipes and their valves and fittings shall be of steel or other approved material, except that restricted use of flexible pipes may be permitted. Such flexible pipes and end attachments shall be of approved fire-resisting materials of adequate strength.

For valves, fitted to oil fuel tanks and which are under static pressure, steel or spheroidal-graphite cast iron may be accepted. However, ordinary cast iron valves may be used in piping systems, where the design pressure is lower than 7 bar and the design temperature is below 60 °C.

.9 All external high pressure fuel delivery lines between the high pressure fuel pumps and fuel injectors shall be protected with a jacketed piping system capable of containing fuel from a high pressure line failure. A jacketed pipe incorporates an outer pipe into which the high-pressure fuel pipe is placed forming a permanent assembly. The jacketed piping system shall include a means for collection of leakages and arrangements shall be provided for an alarm to be given of a fuel line failure.

.10 All surfaces with temperatures above 220 °C which may be impinged as a result of a fuel system failure shall be properly insulated.

.11 Oil fuel lines shall be screened or otherwise suitably protected to avoid as far as practicable oil spray or oil leakages onto hot surfaces, into machinery air intakes, or other sources of ignition. The number of joints in such piping systems shall be kept to a minimum.

.12 Oil fuel lines shall not be located immediately above or near units of high temperature including boilers, steam pipelines, exhaust manifolds, silencers or other equipment required to be insulated. As far as practicable, oil fuel lines shall be arranged far apart from hot surfaces, electrical installations or other sources of ignition and shall be screened or otherwise suitably protected to avoid oil spray or oil leakage onto the sources of ignition. The number of joints in such piping systems shall be kept to a minimum.

.13 Components of a diesel engine fuel system shall be designed considering the maximum peak pressure which will be experienced in service, including any high pressure pulses which are generated and transmitted back into fuel supply and spill lines by the action of fuel injection pumps. Connections within the fuel supply and spill lines shall be constructed having regard to their ability to prevent pressurised oil fuel leaks while in service and after maintenance.

.14 In multi-engine installations which are supplied from the same fuel source, means of isolating the fuel supply and spill piping to individual engines, shall be provided. The means of isolation shall not affect the operation of the other engines and shall be operable from a position not rendered inaccessible by a fire on any of the engines.

.15 Where the Administration of the flag State may permit the conveying of oil and combustible liquids through accommodation and service spaces, the pipes conveying oil or combustible liquids shall be of a material approved by the Administration having regarded of the fire risk.

.16 Existing class B ships shall comply with the requirements of paragraphs .2.9 to .2.11, except that a suitable enclosure of engines having an output of 375 kW or less having fuel injection pumps serving more than one injector may be used as an alternative to the jacketed piping system in paragraph .2.9.

.1 this does not preclude the use of sight-flow glasses in lubricating systems provided that they are shown by test to have a suitable degree of fire resistance. If sight-flow glasses are used, the pipe shall be provided with valves in both ends. The valve at the lower end of the pipe shall be of a self-closing type;

.2 sounding pipes may be authorised in machinery spaces; the requirements of paragraphs .2.6.1.1 and .2.6.1.3 need not be applied on condition that the sounding pipes are fitted with appropriate means of closure.

For ships constructed on or after 1 January 2003 the provisions of paragraph 10.2.5 shall also apply to lubricating oil tanks except those of having a capacity less than 500 litres, storage tanks on which valves are closed during the normal operation of the ship or where it is determined that the unintended operation of a quick closing valve on the lubricating oil tank would endanger the safe operation of the main propulsion and essential auxiliary machinery.

.1 where daily service oil fuel tanks are filled automatically, or by remote control, means shall be provided to prevent overflow spillages. Other equipment which treats flammable liquids automatically, e.g. oil fuel purifiers, which, whenever practicable, shall be installed in a special space reserved for purifiers and their heaters, shall have arrangements to prevent overflow spillages;

.2 where daily service oil fuel tanks or settling tanks are fitted with heating arrangements, a high temperature alarm shall be provided if the flashpoint of the oil fuel can be exceeded.

.1 For ships constructed before 1 July 2019, a firefighter's outfit shall consist of:

▼M2

.1a For ships constructed on or after 1 July 2019, the fire-fighter's outfits shall comply with the Fire Safety Systems Code.

.2 For each breathing apparatus a fireproof lifeline of sufficient length and strength shall be provided capable of being attached by means of a snaphook to the harness of the apparatus or to a separate belt in order to prevent the breathing apparatus becoming detached when the lifeline is operated.

.3 New class B and existing class B ships of 24 metres in length and above and new class C and D ships of 40 metres in length and above shall carry at least two firefighter’s outfits.

.4 In new and existing class B ships of less than 24 metres length and in new class C and D ships of less than 40 metres in length no firefighter’s outfit has to be provided.

.4a Fire-fighter's communication:

For ships required to carry on board at least one fire-fighter outfit and constructed on or after 1 January 2018, a minimum of two two-way portable radiotelephone apparatus for each fire party for fire-fighter's communication shall be carried on board. For LNG fuelled ships or Ro-Ro passenger ships with closed Ro-Ro spaces or special category spaces, those two-way portable radiotelephone apparatus shall be of an explosion-proof type or intrinsically safe. Ships constructed before 1 January 2018 shall comply with the requirements of this Regulation not later than the first survey after 1 July 2019.

.5 The firefighter’s outfits or sets of personal equipment shall be so stored as to be easily accessible and ready for use and, where more than one fire-fighter’s outfit or more than one set of personal equipment is carried, they shall be stored in widely separated positions. At least one firefighter’s outfit and one set of personal equipment shall be available at any one such position.

.6 When the Administration of a flag State considers that the carriage provisions in this Regulation are unreasonable and/or technically unsuitable on board a ship, such ship may, in compliance with the provisions in Article 9 point 3 in this Directive, be exempted from one ore more of the requirements in this Regulation.

.1 Where class ‘A’ divisions are penetrated for the passage of electric cables, pipes, trunks, ducts etc., or for girders, beams or other structural members, arrangements shall be made to ensure that the fire resistance is not impaired in so far as is reasonable and practicable.

For ships which are constructed on or after 1 January 2003, where ‘A’ class divisions are penetrated, such penetrations shall be tested in accordance with the Fire Test Procedures Code, to ensure that the fire resistance of the divisions is not impaired.

In the case of ventilation ducts Regulations II-2/B/9.2.2b and II-2/B/9.3 apply.

However, where a pipe penetration is made of steel or equivalent material having a thickness of 3 mm or greater and a length of not less than 900 mm (preferably 450 mm on each side of the division) and no openings, testing is not required.

Such penetrations shall be suitably insulated by extension of the insulation at the same level of the division.

.2 Where class ‘B’ divisions are penetrated for the passage of electric cables, pipes, trunks, ducts etc., or for the fitting of ventilation terminals, lighting fixtures and similar devises, arrangements shall be made to ensure that the fire resistance is not impaired in so far as is reasonable and practicable. In ships which are constructed on or after 1 January 2003 for such penetrations arrangements shall be made to ensure that the fire resistance of the divisions is not impaired.

Pipes other than steel or copper that penetrate ‘B’ class divisions shall be protected by either:

.3 Pipes penetrating ‘A’ or ‘B’ class divisions shall be of approved materials having regard to the temperature such divisions are required to withstand.

In ships constructed on or after 1 January 2003, no-insulated metallic pipes penetrating ‘A’ or ‘B’ class divisions shall be of materials having a melting temperature which exceeds 950 °C for ‘A-0’ and 850 °C for ‘B-0’ class divisions.

.4 In accommodation spaces, service spaces or control stations, pipes intended to convey oil or other flammable liquids shall be of a suitable material and construction having regard to the fire risk.

.5 Materials readily rendered ineffective by heat shall not be used for over board scuppers, sanitary discharges, and other outlets which are close to the waterline and where the failure of the material in the event of fire would give rise to danger of flooding.

.6 Electric radiators, if used, shall be fixed in position and so constructed as to reduce fire risks to a minimum. No such radiators shall be fitted with an element so exposed that clothing, curtains, or other similar materials can be scorched or set on fire by heat from the element.

.7 All waste receptacles shall be constructed of non-combustible materials with no openings in the sides or bottom.

.8 In spaces where penetration of oil products is possible, the surface of insulation shall be impervious to oil or oil vapours.

NEW CLASS A, B, C AND D SHIPS: In spaces in which there is a risk of oils splashing or oil vapour, e.g. in machinery spaces of category A, the surface of the insulating material shall be impermeable by oil and oil vapour. Where there is covering by non-perforated steel plate or other non-combustible materials (not aluminium) which is the ultimate physical surface, this covering may be joined by seaming, riveting, etc.

.9 Paint lockers and flammable liquid lockers shall be protected by an approved fire-extinguishing arrangement, enabling the crew to extinguish a fire without entering the space.

In ships which are constructed on or after 1 January 2003:

.1 an automatic or manual extinguishing system tested to an international standard in accordance with Publication ISO 15371:2000 on fire-extinguishing systems for protection of galley deep-fat cooking equipment;

.2 a primary and backup thermostat with an alarm to alert the operator in the event of failure of either thermostat;

.3 arrangements for automatically shutting off the electrical power upon activation of the extinguishing system;

.4 an alarm for indicating operation of the extinguishing system in the galley where the equipment is installed; and

.5 controls for manual operation of the extinguishing system, which are clearly labelled for ready use of the crew.

.1 In all ships general arrangement plans shall be permanently exhibited for the guidance of the ship’s officers, showing clearly for each deck the control stations, the various fire sections enclosed by ‘A’ class divisions, the sections enclosed by ‘B’ class divisions together with particulars of the fire detection and fire alarm systems, the sprinkler installation, the fire-extinguishing appliances, means of access to different compartments, decks, etc. and the ventilating system including particulars of the fan control positions, the position of dampers and identification numbers of the ventilating fans serving each section. Alternatively the aforementioned details may be set out in a booklet, a copy of which shall be supplied to each officer, and one copy shall at all times be available on board in an accessible position. Plans and booklets shall be kept up to date, any alterations being recorded thereon as soon as practicable. Description in such plans and booklets shall be in the official language of the flag State. If the language is neither English nor French, a translation into one of these languages shall be included. In the case the ship is engaged on domestic voyages in another Member State, a translation into the official language of that host State, if this language is neither English nor French, shall be included.

For new class B, C and D ships constructed on or after 1 January 2003, the information to be provided with the required fire control plans and booklets and the graphical symbols to be used for the fire control plans shall be in accordance with the IMO Resolutions A.756(18) and A.952(23).

.2 In all ships with a length of 24 metres and over a duplicate set of fire control plans or a booklet containing such plans shall be permanently stored in a prominently marked weather tight enclosure outside the deckhouse for the assistance of shore side fire-fighting personnel.

.1 it is in for repairs or lay-up (either at anchor or at port ) or in dry-dock;

.2 it is declared not in service by the owner or the owner’s representative; and

.3 if there are no passengers on board.

.1 structural fire protection including fire resisting divisions and protection of openings and penetrations in these divisions;

.2 fire detection and fire alarm systems; and

.3 means of escape systems and appliances.

.1 fire mains, fire pumps and hydrants including hoses and nozzles;

.2 fixed fire detection and fire alarm systems;

.3 fixed fire-extinguishing systems and other fire-extinguishing appliances;

.4 automatic sprinkler, fire detection and fire alarm systems;

.5 ventilation systems including fire and smoke dampers, fans and their controls;

.6 emergency shut down of fuel supply;

.7 fire doors including their controls;

.8 general emergency alarm systems;

.9 emergency escape breathing devices;

.10 portable fire extinguishers including spare charges; and

.11 firefighter’s outfits.

.1 Crew members shall receive instructions on fire safety on-board the ship.

.2 Crew members shall receive instructions on their assigned duties.

.3 Parties responsible for fire extinguishing shall be organised. These parties shall have the capability to complete their duties at all times while the ship is in service.

.1 Crew members shall be trained to be familiar with the arrangements of the ship as well as the location and operation of any fire-fighting systems and appliances that they may be called upon to use.

.2 Training in the use of the emergency escape breathing devices shall be considered as a part of on-board training.

.3 Performance of crew members assigned fire-fighting duties shall be periodically evaluated by conducting on-board training and drills to identify areas in need of improvement, to ensure competency in fire-fighting skills is maintained and to ensure the operational readiness of the fire-fighting organisation.

.4 On-board training in the use of the ship’s fire-extinguishing systems and appliances shall be planned and conducted in accordance with provisions of Regulation III/19.4.1 of SOLAS 1974, as amended.

.5 Fire drills shall be conducted and recorded in accordance with the provisions of Regulations III/19.3.4, III/19.5 and III/30 of SOLAS 1974, as amended.

.6 In ships subject to Regulation II-2/A/11, breathing apparatus cylinders used during drills shall be refilled or replaced before departure.

.1 general fire safety practice and precautions related to the dangers of smoking, electrical hazards, flammable liquids and similar common shipboard hazards;

.2 general instructions on fire-fighting activities and fire-fighting procedures including procedures for notification of a fire and use of manually operated call points;

.3 meanings of ship’s alarms;

.4 operation and use of fire-fighting systems and appliances;

.5 operation and use of fire doors;

.6 operation and use of fire and smoke dampers; and

.7 escape systems and appliances.

.1 To provide information and instruction for proper ship and cargo handling operations in relation to fire safety, operational booklets shall be provided on board.

.2 The required fire operational booklet shall contain the necessary information and instructions for the safe operation of the ship and cargo handling operations in relation to fire safety. The booklet shall include information concerning the crew’s responsibilities for the general fire safety of the ship while loading and discharging cargo and while underway. For ships carrying dangerous goods the fire safety booklet shall provide reference to the pertinent fire-fighting and emergency cargo handling instructions contained in the International Maritime Dangerous Goods Code.

.3 The fire safety operational booklet shall be written in the working language of the ship.

.4 The fire safety operational booklet may be combined with the training manuals required in Regulation II-2/A/15.3.

.1 The hull, superstructures, structural bulkheads, decks and deckhouses shall be constructed of steel or other equivalent material. For the purpose of applying the definition of steel or other equivalent material as given in Regulation II-2/A/2.7, the ‘applicable fire exposure’ shall be according to the integrity and insulation standards given in the tables of Regulations II-2/B/4 and 5. For example, where divisions such as decks or sides and ends of deckhouses are permitted to have ‘B-0’ fire integrity, the ‘applicable fire exposure’ shall be half an hour.

.2 However, in cases where any part of the structure is of aluminium alloy, the following shall apply:

.1.1 In ships carrying more than 36 passengers, the hull, superstructure and deckhouses shall be subdivided into main vertical zones by A-60 class divisions.

Steps and recesses shall be kept to a minimum but where they are necessary, they shall also be A-60 class divisions.

Where an open deck space, a sanitary or similar space or a tank including a fuel oil tank, void space or auxiliary machinery space having little or no fire risk, is on one side or where fuel oil tanks are on both sides of the division the standard may be reduced to A-0.

.1.2 For new class B, C and D ships carrying not more than 36 passengers and for existing class B ships carrying more than 36 passengers, the hull, superstructure and deckhouses in way of accommodation and service spaces shall be subdivided into main vertical zones by ‘A’ class divisions. These divisions shall have insulation values in accordance with the tables in Regulation 5.

.2 As far as practicable, the bulkheads forming the boundaries of the main vertical zones above the bulkhead deck shall be in line with watertight subdivision bulkheads situated immediately below the bulkhead deck. The length and width of main vertical zones may be extended to a maximum of 48 metres in order to bring the ends of main vertical zones to coincide with subdivision watertight bulkheads or in order to accommodate a large public space extending for the whole length of the main vertical zone provided that the total area of the main vertical zone is not greater than 1 600 m2 on any deck. The length or width of a main vertical zone is the maximum distance between the furthermost points of the bulkheads bounding it.

.3 Such bulkheads shall extend from deck to deck and to the shell or other boundaries.

.4 Where a main vertical zone is subdivided by horizontal ‘A’ class divisions into horizontal zones for the purpose of providing an appropriate barrier between sprinkled and non-sprinklered zones of the ship, the divisions shall extend between adjacent main vertical zone bulkheads and to the shell or exterior boundaries of the ship and shall be insulated in accordance with the fire insulation and integrity values given in table 4.2 for new ships carrying more than 36 passengers, and existing class B ships carrying more than 36 passengers.

.5

.1.1 For new ships carrying more than 36 passengers all bulkheads which are not required to be ‘A’ class divisions shall be at least ‘B’ class or ‘C’ class divisions as prescribed in the tables in Regulation 4. All such divisions may be faced with combustible materials in accordance with the provisions of Regulation II-2/B/11.

.1.2 For new ships carrying not more than 36 passengers and existing class B ships carrying more than 36 passengers all bulkheads within accommodation and service spaces which are not required to be ‘A’ class divisions shall be at least ‘B’ class or ‘C’ class divisions as prescribed in the tables in Regulation II-2/B/5.

All such divisions may be faced with combustible materials in accordance with the provisions of Regulation 11.

.2 In new class B, C and D ships carrying not more than 36 passengers and in existing class B ships carrying more than 36 passengers all corridor bulkheads where not required to be ‘A’ class shall be ‘B’ class divisions which shall extend from deck to deck except:

.3 All bulkheads required to be ‘B’ class division, except corridor bulkheads prescribed in paragraph .2, shall extend from deck to deck and to the shell or other boundaries unless the continuous ‘B’ class ceilings or linings fitted on both sides of the bulkheads are at least of the same fire resistance as the bulkhead, in which case the bulkhead may terminate at the continuous ceiling or lining.

.1 In addition to complying with the specific provisions for fire integrity of bulkheads and decks mentioned elsewhere in this part, the minimum fire integrity of all bulkheads and decks shall be as prescribed in tables 4.1 and 4.2.

.2 The following requirements shall govern the application of the tables:

.3 Continuous ‘B’ class ceiling or linings, in association with the relevant decks or bulkheads, may be accepted as contributing wholly or in part, to the required insulation and integrity of a division.

.4 In approving structural fire protection details the Administration of the flag State shall have regard to the risk of heat transmission at intersections and terminal points of required thermal barriers.