Ah, yes Telly I do believe you are correct. According to Britannica online:
"Bollards (mooring posts) on the lockside are used for holding vessels steady by ropes against the turbulence during lock operation;"
"capstan: mechanical device used chiefly on board ships or in shipyards for moving heavy weights by means of ropes"
I remember we used to sit on the capstans when we went on dependent's cruises when my spouse was in the Navy. No wonder I'm always going in circles.