jet·sam /ˈʤɛtsəm/
  投棄貨物,漂流到海岸的貨物
  Jet·sam Jet·son n.
  1.  Mar. Law Goods which sink when cast into the sea, and remain under water; -- distinguished from flotsam, goods which float, and ligan (or lagan), goods which are sunk attached to a buoy.
  2.  The act of throwing objects from  a ship to lighten the load; jettison1. See Jettison, 1.
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  jetsam
       n 1: the part of a ship's equipment or cargo that is thrown
            overboard to lighten the load in a storm
       2: the floating wreckage of a ship [syn: flotsam]