14.1 An opening below the weather deck shall be
provided with an efficient means of closure.
14.2 When the opening is for the purpose of an
inlet or discharge below a line drawn 150mm (6 inches) above the loading
mark it shall be fitted with a seacock, valve or other positive means
of closure, which is readily accessible in an emergency.
14.3 When the opening is for a log or other sensor,
which is capable of being withdrawn, it shall be fitted in an efficient
watertight manner and provided with an effective means of closure
when such a fitting is removed.
14.4 Inlet and discharge pipes from water closets
shall be provided with shell fittings as required by III/14.
When the rim of a toilet is less than 300mm above the deepest waterline
of the vessel, anti-syphon measures shall be provided.