Objects thrown overboard (6)
I believe the answer is:
jetsam
<span class="explanation-format__ClueExplanation">'<span class="explanation-format__original">objects thrown overboard</span>' is the definition.<br/ ><span class="explanation-format__explanation">(I've seen this before)</span><br/ ><br/ >This is all the clue.<br/ ></span>
(Other definitions for jetsam that I've seen before include "Cargo cast overboard" , "lost cargo" , "that lands on shore" , "Cargo deliberately thrown overboard to lighten ship" , "Ship's discharge" .)