A small boat (6)
I believe the answer is:
dinghy
<span class="explanation-format__ClueExplanation">'<span class="explanation-format__original">a small boat</span>' is the definition.<br/ ><span class="explanation-format__explanation">(dinghy is a kind of small boat)</span><br/ ><br/ >This is all the clue.<br/ ></span>
(Other definitions for dinghy that I've seen before include "little boat" , "Light rowing boat" , "craft" , "Small rowing or sailing boat" , "vessel" .)