Cofferdams 8
Cofferdams 8 : Watertight enclosures of piles within which excavation is carried out for work under water. In oil-carrying vessels compartments arranged at the forward and after ends of the oil cargo tanks and, where the machinery space is situated amidships, at each end of that space in order to isolate the engine and boiler spaces and the forward and after ends of the ship from the oil cargo
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