Section 1 General

1.1.1 This Chapter applies to sea-going steel trawlers, stern trawlers and fishing vessels.

1.1.2 For the purpose of this Chapter, a fishing vessel is a ship used for fishing operations, but not equipped for trawling.

1.1.3 The scantlings and arrangements are to be as required by Pt 4, Ch 1 General Cargo Ships except as otherwise specified in this Chapter. Consideration will be given to proposals for modified scantlings on vessels where L is less than 24 m.

1.2.1 The International Convention on Load Lines, 1966 does not apply to trawlers and fishing vessels, but certain National Authorities may request the assignment of load lines for ships registered in their countries.

1.2.2 The Rules affecting the protection of openings and protection of crew, and particularly those contained in Pt 3, Ch 11 Closing Arrangements for Shell, Deck and Bulkheads and Pt 3, Ch 12 Ventilators, Air Pipes and Discharges, may be modified to take account of National Regulations or practicabilities related to fishing operations.

1.2.3 Where a ship has been assigned zero freeboard, i.e. the design draught and the main deck coincide, the build-up of water on the main deck is to be prevented. In addition to the requirements of Pt 3, Ch 8, 5.3 Freeing arrangements and Pt 3, Ch 12, 4 Scuppers and sanitary discharges, further means of preventing the build-up of water such as, but not limited to, the fitting of partial bulkheads on the main deck and/or additional drainage requirements may be required in order to reduce free surface moments.

1.3.1 In general, ships complying with the requirements of this Chapter will be eligible for one of the following classes:

1. 100A1 trawler. This class will be assigned to side fishing trawlers.

2. 100A1 stern trawler. This class will be assigned to stern fishing trawlers.

3. 100A1 fishing vessel. This class will be assigned to fishing vessels, see Pt 4, Ch 6, 1.1 Application 1.1.2.

1.3.2 The Regulations for classification and the assignment of class notations are given in Pt 1, Ch 2 Classification Regulations to which reference should be made.

1.4.1 In addition to the information required by Pt 3, Ch 1, 5 Information required, the position and arrangement of trawl gear and deck machinery and location of insulated compartments are to be indicated.

1.5.1 The Rule length, L, is the distance, in metres, on the classification waterline from the fore side of the stem to the after side of the rudder post, or to the centre of the rudder stock if there is no rudder post. L is to be not less than 96 per cent, and need not be greater than 97 per cent, of the extreme length on the classification waterline.

1.5.2 Breadth B, is the greatest moulded breadth, in metres.

1.5.3 Depth D, is measured, in metres, at the middle of the length, L from the base line to top of the deck beam at side on the uppermost continuous deck.

1.5.4 The classification waterline in single deck ships is the waterline taken perpendicular to the plane of the transverse bulkheads located at 0,85D from the base line amidships, or at the maximum operational draught amidships, whichever is the greater. In two-deck ships, it is the waterline located at the maximum operational draught, but if this is unknown, it may be taken at 50 mm below the lower deck. If a load line is required by a National Authority, the classification waterline is the summer load waterline.

1.5.5 Keel line is the line parallel to the slope of the keel intersecting the top of the keel at amidships, or the line of intersection of the inside of shell plating with the keel where a bar keel is fitted.

1.5.6 Base line is a line parallel to the classification waterline and intersecting the keel line at amidships.

1.5.7 Draught T, is the distance in metres, between the classification waterline and the base line amidships.

1.5.8 The block coefficient C _b is to be taken at the classification waterline.

1.5.9 The following symbols are also applicable to this Chapter: