flotsam
noun
[ ˈflɒts(ə)m ]
• the wreckage of a ship or its cargo found floating on or washed up by the sea.
Similar:
wreckage,
lost cargo,
floating remains,
Origin:
early 17th century: from Anglo-Norman French floteson, from floter ‘to float’.
flotsam and jetsam
• useless or discarded objects.