Division NEW CLASS B, C AND D AND EXISTING CLASS B SHIPS:F1
United Kingdom
Every ship shall be subdivided by bulkheads, which shall be watertight up to the bulkhead deck, into watertight compartments the maximum length of which shall be calculated according to the specific requirements given below.
Instead of those requirements, the Regulations on subdivision and stability of passenger ships as an equivalent to Part B of Chapter II of the International Convention for the Safety of Life at Sea, 1960, as given in IMO Resolution A.265(VIII) may be used, if applied in their entirety.
Every other portion of the internal structure which affects the efficiency of the subdivision of the ship shall be watertight.