‘Appendix 1

Specifications of Bacoma codends

Description

(a)   Size of the codend, extension piece and the rear end of the trawl

(i)

The codend shall be constructed of two panels, joined together by selvedges one on each side of equal length.

(ii)

The minimum mesh size of the diamond meshes shall be 105 mm. The material of the yarn shall be of polyethylene threads with a single twine thickness of no more than 6 mm or with double twine thickness of no more than 4 mm.

(iii)

The use of codends and extension pieces which are made of only one piece of net material and have only one selvedge shall be prohibited.

(iv)

The number of open diamond meshes, excluding those in the selvedges, at any point on any circumference of any extension piece shall not be less or more than the maximum number of meshes on the circumference of the front end of the codend (Figure 1).

(b)   Location of window

(i)

The window shall be inserted into the top panel of the codend (Figure 2).

(ii)

The window shall terminate not more than four meshes from the codline, inclusive of the hand-braided row of meshes through which the codline is passed (Figure 3 or 4).

(c)   Size of window

(i)

The width of the window, expressed in number of mesh bars, shall be equal to the number of open diamond meshes in the top panel divided by two. If necessary, it will be allowed to maintain at the most 20 % of the number of open diamond meshes in the top panel divided evenly on the both sides of the window panel (Figure 4).

(ii)

The length of the window shall be at least 5,5 m.

(iii)

By way of derogation from point (ii) the length of the window shall be at least 6 m if a sensor dedicated to the measurement of the volume of the catches is attached to the window.

(d)   Netting of window

(i)

The meshes shall have a minimum mesh opening of 120 mm. The meshes shall be square meshes i.e. all four sides of the window netting will be cut all bars.

(ii)

The netting shall be mounted such that the bars run parallel and perpendicular to the length of the codend. The netting shall be knotless braided single twine or netting with similar proven selective properties. Knotless netting means netting which is composed of meshes of four sides in which the corners of the meshes are formed by the interweaving of the twines of two adjacent sides of the mesh.

(iii)

The diameter of the single yarn shall be at least 5 mm.

(e)   Other specifications

(i)

A back strap shall not encircle the Bacoma exit window.

(ii)

A codend buoy shall be spherical in shape and have a maximum diameter of 40 cm. It shall be fastened trough the buoy rope to the codline.

(iii)

A flapper shall not overlap the Bacoma exit window.

Figure 1

Trawl gear can be divided into three different sections according to shape and function. The trawl body is always a tapered section. The extension piece is an untapered section normally manufactured of either one or two pieces of nets. The codend is also an untapered section often made of double twine in order to have a better resistance against heavy wearing. The part below the lifting strap is called lifting bag.

Figure 2

A	Extension piece
B	Codend
C	Escape window, square mesh panel

1	Upper panel, maximum 50 open diamond meshes
2	Lower panel, maximum 50 open diamond meshes
3	Selvedges
4	Joining round or lacing
5	Lifting strap
6	Back strap
7	Codline
8	Distance of window from codline (Figures 3 and 4)
9	Buoy rope
10	Codend buoy

Figure 3

MOUNTING OF WINDOW PANEL

A	120 mm square mesh panel (25 bars)
B	Joining of square mesh panel to selvedge
C	Joining of square mesh panel to diamond mesh net
D	105 mm diamond mesh net (maximum 50 open meshes)
E	Distance of the window panel from the codline. The window shall terminate not more than four meshes from the codline, inclusive of the hand-braided row of meshes through which the codline is passed
F	One row of hand-braided codline meshes

Figure 4

MOUNTING OF WINDOW PANEL

A	120 mm square mesh panel (20 bars)
B	Joining of square mesh panel to selvedge
C	Joining of square mesh panel to diamond mesh net
D	105 mm diamond mesh net (max 50 open meshes)
E	Distance of the window panel from the codline. The window shall terminate not more than 4 meshes from the codline, inclusive of the hand-braided row of meshes through which the codline is passed
F	One row of hand-braided codline meshes
G	Maximum 10 % in both sides of open meshes D

‘Appendix 2

SPECIFICATIONS OF THE T90 TRAWL

(a)   Definition

1.

T90 trawls are defined as trawls, Danish seines and similar gears having a codend and extension piece produced from diamond knotted netting turned 90° so that the main direction of run of the netting twine is parallel to the towing direction.

2.

The direction of run of the netting twine in a standard diamond knotted net (A) and in a net turned 90° (B) is illustrated in Figure 1 below.

Figure 1

(b)   Mesh size and measurement

The mesh size shall be at least 120 mm. By way of derogation from Article 6(1) of Commission Regulation (EC) No 517/2008 (*1), the mesh size in the codend and the extension piece shall be measured perpendicular to the longitudinal axis of the fishing gear.

(c)   Twine thickness

The material of the yarn of the codend and the extension piece shall be of polyethylene threads with a single twine thickness of no more than 6 mm or with double twine thickness of no more than 4 mm. This provision shall not apply to the rear most row of meshes in the codend if fitted with a codline.

(d)   Construction

1.

A codend and extension of turned meshes (T90) shall be constructed from two panels of equal dimensions, with at least 50 meshes in length, and with the mesh orientation described above, joined by two lateral selvedges.

2.

The number of open meshes in any circumference must be constant from the front part of the extension to the rear most part of the codend.

3.

At the point of attachment of the codend or extension piece to the tapered part of the trawl, the number of meshes in circumference of the codend or extension piece must be 50 % of the last row of meshes of the tapered part of the trawl.

4.

A codend and extension piece is illustrated in Figure 2 below.

(e)   Circumference

The number of meshes in any circumference in the codend and the extension piece, excluding joinings and selvedges shall be no more than 50.

(f)   Joining rounds

The forward edge of the panels composing both codend and extension piece shall be fitted out with a braided row of half meshes. The aft edge of codend panel shall be fitted out by a full row of braided meshes able to guide the codline.

(g)   Codend buoy

A codend buoy shall be spherical in shape and have a maximum diameter of 40 cm. It shall be fastened trough the buoy rope to the codline.

Figure 2