Section 2 Protection

2.1.1 Where wood sheathing is fitted, the material is to be of good quality, well seasoned and free from sapwood, and the thickness is to be not less than 65 mm. The plank widths should not normally exceed 150 mm. Thwartship planks are to be laid at the ends of deckhouses and at break of deck. Fastenings are to be sunk below the surface of the planking and covered with turned dowels, and the whole to be thoroughly bedded in a suitable composition. All weather decks are to be caulked and payed.

2.1.2 Where gutter waterways are fitted, the bar forming the inner edge of the waterway is to be not less than 7,5 mm thick.

2.1.3 Welded studs are to be not less than 9,5 mm diameter, and are to be coated with suitable composition before the planking is laid. Bolts used instead of studs may be 12,5 mm diameter galvanised. If the steel deck is penetrated for bolts, the deck is to be hose tested in accordance with Pt 3, Ch 8 Superstructures, Deckhouses and Bulwarks.

2.1.4 Where trawl winches are set back from the aft end, wear bars are to be fitted to minimise excessive wear resulting from the winch cables rubbing against the deck.

2.2.1 When a fuel oil bunker or double bottom carrying fuel oil, or a lubricating oil tank, is adjacent to a fish hold, the relevant requirements of Pt 4, Ch 3, 4 Panting and strengthening of bottom forward are to be complied with.

2.2.2 Compartments used for the processing of fish, or for temporary storage during or while awaiting processing, need not comply with the requirements of Pt 4, Ch 6, 2.2 Protection of cargo 2.2.1, but the construction of the bulkheads, decks and insulation, if any, should be such as to minimise the risk of oil leakage.