英语词汇“ballast movement”的英英意思、用法、释义、翻译、读音、例句、短语、词组-英语词典

单词	ballast movement
释义	ballast movement ballast movement [′bal·əst ‚müv·mənt] (navigation) A voyage or leg of a voyage by a tanker during which no commercially valuable cargo is in the tanks; seawater is usually carried to maintain stability. Also known as ballast leg; ballast passage.
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