| 摘要 |
1278150 Building ships in sections MITSUI SHIPBUILDING & ENG CO Ltd 12 June 1970 [30 Aug 1969] 28684/70 Heading B7S The method of constructing the hull of a ship formed of prefabricated sections welded together consists in first supporting an end section 17 of the hull on a pontoon 4a floating in a waterway, displacing the pontoon and substituting for it a second pontoon, on which is supported the second section 18. The pontoons are interconnected by members 7 which permit relative vertical movement of the two pontoons and water is introduced to or drained from the second pontoon to bring it level with the first pontoon. The two sections are then welded together. Further sections are added in like manner to form the complete hull and the pontoons are sunk to leave the hull floating. In the embodiment shown the pontoons with hull sections are located between two parallel piers or breakwaters and travelling cranes 12 and 19 are employed. |
