Wreckage found floating (7)
I believe the answer is:
flotsam
'wreckage found floating' is the definition.
(I've seen this before)
This is the entire clue.
(Other definitions for flotsam that I've seen before include "Wreckage adrift at sea" , "Washed-up wreckage" , "Wreck" , "Detritus" , "Things found floating from a ship" .)