Canal-boat (5)
I believe the answer is:
barge
<span class="explanation-format__ClueExplanation">'<span class="explanation-format__original">canal-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 barge that I've seen before include "Long, flat-bottomed boat" , "Sort of board" , "Long boat for freight" , "Shove - canal boat" , "River transport" .)