Seafarers (8)
I believe the answer is:
mariners
<span class="explanation-format__ClueExplanation">'<span class="explanation-format__original">seafarers</span>' is the definition.<br/ ><span class="explanation-format__explanation">(I know this)</span><br/ ><br/ >This is all the clue.<br/ ></span>
(Other definitions for mariners that I've seen before include "Rinse arm (anag)" , "They work at sea" , "Sea-farers" , "Seamen" , "Sailors" .)