1 The Administration may require that all reasonable
and practicable measures shall be taken to limit the entry and spread
of water above the bulkhead deck. Such measures may include partial
bulkheads or webs. When partial watertight bulkheads and webs are
fitted on the bulkhead deck, above or in the immediate vicinity of
watertight bulkheads, they shall have watertight shell and bulkhead
deck connections so as to restrict the flow of water along the deck
when the ship is in a heeled damaged condition. Where the partial
watertight bulkhead does not line up with the bulkhead below, the
bulkhead deck between shall be made effectively watertight. Where
openings, pipes, scuppers, electric cables etc. are carried through
the partial watertight bulkheads or decks within the immersed part
of the bulkhead deck, arrangements shall be made to ensure the watertight
integrity of the structure above the bulkhead deck.footnote
2 All openings in the exposed weather deck shall
have coamings of ample height and strength and shall be provided with
efficient means for expeditiously closing them weathertight. Freeing
ports, open rails and scuppers shall be fitted as necessary for rapidly
clearing the weather deck of water under all weather conditions.
3 Air pipes terminating within a superstructure which are
not fitted with watertight means of closure shall be considered as unprotected openings
when applying regulation 7-2.6.1.1.
4 Sidescuttles, gangway, cargo and fuelling ports
and other means for closing openings in the shell plating above the
bulkhead deck shall be of efficient design and construction and of
sufficient strength having regard to the spaces in which they are
fitted and their positions relative to the deepest subdivision draught.footnote
5 Efficient inside deadlights, so arranged that
they can be easily and effectively closed and secured watertight,
shall be provided for all sidescuttles to spaces below the first deck
above the bulkhead deck.