Wherever this occurs each opening is made watertight by special fittings, and it is essential to the safety of the ship that the watertightness of each fitting should be maintained in an efficient condition, and that doors, valves and hatches are opened only when necessary .
Naninina xa kusenzeka oku umngxuma ngamnye wenzelwa isivalo esingangeni manzi, kwaye kubalulekile ukuba ukungangeni manzi kugcinwe kukwimeko elungileyo ukwenzela ukhuseleko lwenqanawa, kwaye amacango, ivalvu kunye nezikroba zivulwe kuphela xa oko kuyimfuneko.