Construction and testing of watertight decks, trunks, tunnels, duct keels and ventilators
(1) (a) In every ship the watertight decks, trunks, tunnels, duct keels and ventilators shall be of the same strength as the watertight bulkheads at corresponding levels.
(b) The means for making them watertight and the arrangements for closing openings in them shall be to the satisfaction of the Administration.
(c) Watertight ventilators and trunks shall be watertight at least up to the freeboard deck.
(2) Watertight decks shall be subjected to a hose or flooding test after completion. Watertight trunks, tunnels and ventilators shall be subject to a hose test on completion, alternatively they may be tested by other means acceptable to the Administration.
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