When big cargo ships are traveling in ballast, that is, without any cargo, they often carry tanks of water in their holes to make them sink far enough into the water to be stable.

 
  • 當大型貨輪“只裝壓艙物”航行時(shí),即船上沒(méi)有貨物時(shí),常常在其艙內的罐子里裝上水使船沉入水中足夠的深度以求穩定。
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