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Cargo Containers: The cargo containers are to be independent structural tanks or non-load-carrying membranes which separate the cargo from the Insulation and are suitably retained in position at all times. Structural containers which are not independent of the hull may be considered, provided the arrangements and materials of such containers and the hull structure are specially approved.
All primary containers for low-temperature cargoes, the Insulation and the cargo-handling equipment are to be tested under service conditions prior to final action in regard to classification. The primary containers are to be filled to the normal-capacity level with cargo at the minimum service temperature.
Dry-cargo vessels and tankers compose vast majority of the ships which ply the oo in the service of commerce. The trend, toda; to larger and faster vessels in these cla; Whereas America's 525-foot, 12,910-deadwei; ton Mariner-class vessels, laid down in 1951, v about the same size as the largest dry-cargo s built in the United States during World War their 20-knot cruising speed was consider: higher than the 17 knots which their predeces: could make. Their high speed is a military ture which few European-built freighters pos; More recently, the so-called container shi] causing innovation in the merchant-ship i Cargo is stored in weatherproof containers, w are loaded into the ship in certain patte their unloading is very fast and easy. (In s cases the containers have rollers.) Automa has resulted in cutting down the size of ci and has made merchant ships much easiei handle; the American Racer is an example.
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