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A tack is the windward side of a sailing craft (side from which the wind is coming while under way)—the starboard or port tack. Generally, a craft is on a starboard tack if the wind is coming over the starboard (right) side with sails on port (left) side. Similarly, a craft is on a port tack if the wind is coming over the port (left).
Windsurfer rig – Sailors of windsurfers tack by walking forward of the mast and letting the sail swing into the wind as the board moves through the eye of the wind; once on the opposite tack, the sailor realigns the sail on the new tack. In strong winds on a small board, an option is the 'fast tack', whereby the board is turned into the wind ...
Negotiating obstructions or a channel may also require a change of direction with respect to the wind, necessitating changing of tack with the wind on the opposite side of the craft, from before. Changing tack is called tacking when the wind crosses over the bow of the craft as it turns and jibing (or gybing) if the wind passes over the stern.
Points of sail and approximate apparent wind for a conventional sailboat on starboard tack. A point of sail is a sailing craft's direction of travel under sail in relation to the true wind direction over the surface. The principal points of sail roughly correspond to 45° segments of a circle, starting with 0° directly into the wind.
Broad reaching on port tack. "Prepare to jibe!" Bearing away, or turning downwind, and hauling in the sail(s) to begin the jibing maneuver. "Bearing away!" Heading downwind, the wind catches the other side of the sail and it jibes, then is quickly let out to its new position. "Jibe-ho!" Steadying up on the new tack. Broad reaching on starboard ...
However, under sail on a given tack, the corner to which the spinnaker sheet is attached is called the clew, and the corner attached to the spinnaker pole is referred to as the tack. [20] Tack – The tack is the corner on a fore-and-aft sail where the luff and foot connect [8] and, on a mainsail, is located where the boom and mast connect.
port of registry The port listed in a vessel's registration documents and lettered on her stern. Often used incorrectly as a synonym for home port, meaning the port at which the vessel is based, but it may differ from the port of registry. port tack When sailing with the wind coming from the port side of the vessel.
Boats on a port tack shall keep clear of boats on starboard tack (Rule 10). When boats are on the same tack and overlapped, the boat to windward (the boat closest to the wind) shall keep clear of a leeward boat (Rule 11). When boats are on the same tack and not overlapped, the boat that is astern shall keep clear of the boat ahead. (Rule 12).