It is only provided to compartments which have direct access to the air, and are well above the waterline, and then only when considerations of watertight integrity permit .
Oku kunikezelwa kuphela kwiindawo zokuhlala ezinendlela yokufumaneka ngokuthe ngqo komoya, kwaye zibekwe kakuhle ngaphezu komgca wamanzi, naxa ukufezwa kokungangeni kwamanzi kukuvumela oko.