| 摘要 |
PROBLEM TO BE SOLVED: To uniformly fill foam material in all the space part between a hull member and a deck member. SOLUTION: Raised parts 3A, 3B raised from an upper surface of a deck member 3 are respectively formed at a bow and a stern of the deck member 3 of a hull, injection holes 3f, 3g for injecting water-reacting urethane foam liquid 20A into a space part between a hull member 2 and the deck member 3 are respectively formed in top surfaces of the raised parts 3A, 3B, and each injection hole 3f, 3g is closed by a plug 18 after foaming of the urethane foaming liquid 20A.
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