Yank; boat (3)
I believe the answer is:
tug
<span class="explanation-format__ClueExplanation">This clue is a double definition.<br/ ><br/ >'<span class="explanation-format__original">yank</span>' is the first definition.<br/ ><span class="explanation-format__explanation">(both can mean to pull sharply)</span><br/ ><br/ >'<span class="explanation-format__original">boat</span>' is the second definition.<br/ ><span class="explanation-format__explanation">(I know that tug is a type of boat)</span><br/ ><br/ ></span>
(Other definitions for tug that I've seen before include "Pull vigorously and a boat that does it" , "water tower" , "A sharp pull or a towing boat" , "Pull a form of boat" , "draw with some effort" .)