Nautical platform (4)
I believe the answer is:
deck
<span class="explanation-format__ClueExplanation">'<span class="explanation-format__original">nautical platform</span>' is the definition.<br/ ><span class="explanation-format__explanation">(I've seen this in another clue)</span><br/ ><br/ >This is the entire clue.<br/ ></span>
(Other definitions for deck that I've seen before include "part of ship" , "Pack of cards (US)" , "Pack - floor in boat" , "Adorn; pack of cards" , "Adorn; level on ship" .)