Floating platform (4)
I believe the answer is:
raft
<span class="explanation-format__ClueExplanation">'<span class="explanation-format__original">floating platform</span>' is the definition.<br/ ><span class="explanation-format__explanation">(I've seen this in another clue)</span><br/ ><br/ >This is all the clue.<br/ ></span>
(Other definitions for raft that I've seen before include "water transport" , "Flat floating structure used as boat" , "Travel on river, in a way" , "Makeshift boat" , "vessel" .)