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.

• 当大型货轮“只装压舱物”航行时，即船上没有货物时，常常在其舱内的罐子里装上水使船沉入水中足够的深度以求稳定。