Regulation 2 - Definitions

 Subdivision length (L_s ) – Different examples of L_s showing the buoyant hull and the reserve buoyancy are provided in the figures below. The limiting deck for the reserve buoyancy may be partially watertight.

 Freeboard deck – See notes under regulation 13-1 for the treatment of a stepped freeboard deck with regard to watertightness and construction requirements.

 Light service draught (d_l ) – The light service draught (d_l ) represents the lower draught limit of the minimum required GM curve. It corresponds, in general, to the ballast arrival condition with 10% consumables for cargo ships. For passenger ships, it corresponds, in general, to the arrival condition with 10% consumables, a full complement of passengers and crew and their effects, and ballast as necessary for stability and trim. The 10% arrival condition is not necessarily the specific condition that must be used for all ships, but represents, in general, a suitable lower limit for all loading conditions. This is understood to not include docking conditions or other non-voyage conditions.

 Bulkhead deck – See notes under regulation 13 for the treatment of a stepped bulkhead deck with regard to watertightness and construction requirements.