Captain's journal (3)
I believe the answer is:
<span class="explanation-format__ClueExplanation">'<span class="explanation-format__original">captain's journal</span>' is the definition.<br/ ><span class="explanation-format__explanation">(I've seen this in another clue)</span><br/ ><br/ >This is the entire clue.<br/ ></span>
(Other definitions for log that I've seen before include "Register" , "Lump of wood or ship's diary" , "Enter" , "Formal record" , "Piece of wood - record" .)