To bring the boat as nearly to a stop as possible, by use of sails or engine. In a sailing boat the headsail(s) is Backed by hauling it over to the windward side of the boat by the sheet. Then by adjustment of mainsail and helm the vessel is held quiet and steady with very little forward movement. A very useful manoeuvre which seems to be used less often than it might be. Please also see Fore-reach (under Fore).