Statutory Documents - MCA Publications - PYC - A Code of Practice for Yachts Carrying 13 to 36 Passengers (The Passenger Yacht Code) - Chapter 4 - Construction, Subdivision and Stability - Part III - Subdivision, Watertight and Weathertight Integrity - 4.19 Internal Watertight Integrity above the Bulkhead Deck:
4.19 Internal Watertight Integrity above the Bulkhead Deck:
(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 in accordance with the following provisions-
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(a) such measures may include partial bulkheads or webs;
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(b) 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;
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(c) where the partial watertight bulkhead does not line up with the bulkhead below, the bulkhead deck between shall be made effectively watertight; and
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(d) 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 deckfootnote.
(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) The open end of air pipes terminating within a superstructure shall-
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(a) be at least 1 metre above the waterline when the ship heels to an angle of 15º, or the maximum angle of heel during intermediate stages of flooding, as determined by direct calculation, whichever is the greater;
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(b) alternatively, air pipes from tanks other than oil tanks may discharge through the side of the superstructure; and
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(c) the provisions of this paragraph are without prejudice to the provisions of the International Convention on Load Lines in force.
(4) Sidescuttles, gangway, stores loading 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.
(5) In applying the provisions of this section due regard shall be had to section 2.12 of Chapter 2.
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