Section 1 General

1.1.1 The contents of this Chapter are applicable to mono-hull and multi-hull craft constructed in steel, aluminium alloy or composite materials classed in service groups G1 to G6.

1.1.2 The requirements in this Chapter are not applicable to craft classed in service groups Zone 1 to Zone 3. Closing arrangements and outfit for craft classed in service groups Zone 1 to Zone 3 are to comply with the requirements of the National Authority. In the absence of National Authority requirements the relevant requirements of the Rules and Regulations for the Classification of Inland Waterways Ships, July 2022 are to be complied with.

1.1.3 Where the requirements of Pt 1, Ch 2, 1.1 General 1.1.11 require the craft to be subdivided for damage stability aspects these will be considered in addition to the requirements of this Part.

1.1.4 Attention is, however, to be given to any other additional statutory requirements of the National Authority in which the craft is registered.

1.2.1 Yachts and craft to which the International Convention on Load Lines, 1966 is applicable, see Pt 1, Ch 2, 1.1 General 1.1.11, are to comply with the requirements of this sub-Section.

1.2.2 Doors, hatches, ventilators, windows, portlights, etc. provided with closing appliances which can be secured weathertight, and small openings through which progressive flooding cannot take place are not considered as down flooding points.

1.2.3 Air pipes are to be fitted with automatic closing appliances unless it can be shown that, with the craft at its summer load waterline, the openings will not be immersed at an angle of heel of 40^o, or the angle of downflooding if this is less than 40^o.

1.3.1 The down flooding angle is the least angle of heel at which openings in the hull, superstructure or deckhouses, which cannot be closed weathertight, immerse and allow flooding to occur.

1.3.2  L _L is the loadline length as defined in Pt 3, Ch 1, 6.2 Principal particulars 6.2.3.

1.3.3 Position 1 and Position 2 are as defined in Pt 3, Ch 1, 6.10 Position 1 and Position 2.

1.4.1 Bolted connections are generally to be in accordance with Table 4.1.1 Bolt pitch requirements for structural connections. Further requirements are contained throughout this Chapter.