Oars (7)
I believe the answer is:
paddles
<span class="explanation-format__ClueExplanation">'<span class="explanation-format__original">oars</span>' is the definition.<br/ ><span class="explanation-format__explanation">(paddle is a kind of oar)</span><br/ ><br/ >This is all the clue.<br/ ></span>
(Other definitions for paddles that I've seen before include "Walks in sea" , "Progresses through water using hands" , "feet" , "Short light types of 12 ac" , "Short light oars" .)