MERCHANT SHIPPING (INSTRUCTIONS TO SURVEYORS) (PASSENGER SHIPS) REGULATIONS
Limitation of number of openings and means for closing
Openings in Ship's Sides below the Margin Line
and means for closing them
(1) The number of openings in the ship's sides below the margin line shall be reduced to the minimum compatible with the design and proper working of the ship.
(2) The arrangement and efficiency of the means for closing each such opening shall be consistent with its intended purpose and the position in which it is fitted and shall be to the satisfaction of the Surveyor of Ships.