| 摘要 |
PROBLEM TO BE SOLVED: To solve a problem that the conversion of a single hull cargo ship (a single hull tanker) into one having a double hull is preferable in prolonging the life of a precious property; however, the construction period is very long in an existing method; the stop of the operation during that time raises another problem, and the construction cost is enormous. SOLUTION: A main part of a double hull structure housing a cargo tank or a cargo hold part of an objective ship is constructed in advance, and launched and held at a wharf. The draft of the arrived objective ship and the draft of the main part of the double hull structure are adjusted. The main part of the double hull structure is moved from a fore side or an aft side of the objective ship, and the ship and the double hull structure are fitted to each other. Thereafter, an installation work, an integration work and a painting work of other double hull structure other than the main part are executed. An attachable/detachable buoyant tank is attached to each side of the main part of the double hull structure. COPYRIGHT: (C)2009,JPO&INPIT
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