Small light boat (5)
I believe the answer is:
skiff
<span class="explanation-format__ClueExplanation">'<span class="explanation-format__original">small light boat</span>' is the definition.<br/ ><span class="explanation-format__explanation">(I've seen this before)</span><br/ ><br/ >This is the entire clue.<br/ ></span>
(Other definitions for skiff that I've seen before include "Light rowing boat for one person" , "Small light boat" , "Small rowing boat" .)