(1) Although you may ‘overhaul’ the engine of a boat just as you would an
automobile, the word has a special use in connection with running rig­ging or
block and tackle. It means to extend a tackle or sheet rather than to haul it
in. Sometimes in light airs the main boom will not swing out because of the
fric­tion in the blocks of the mainsheet. In that case you ‘overhaul’ the sheet
to ease it out

(2) To
overtake another boat, usually to windward.