keel date 中文意思是什麼
keel date
解釋
龍骨鋪設期-
A ship shall be deemed to have been constructed on the date when its keel is laid or when it is at a similar stage of contruction
一艘船舶應被視為建造于其龍骨鋪設之日或當其處于類似建造階段之日。
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