Boating & Sailing Terms

We are assembling a large collection of boating and sailing terms.
This will be a great resource for all boaters.
To view the page of terms, click on the letter that the term starts with
                            To submit a term please email us.

 

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Click the letter for the page of terms to view...


Tango

tabernacle - A hinged support for the bottom of a mast so that the mast can be lowered easily when passing under bridges.
tachometer - A gauge that measures engine revolutions per minute.
tack - 1 - The lower forward corner of a triangular sail 2 - The direction that a boat is sailing with respect to the wind. See also port tack and starboard tack. 3 - To change a boat's direction, bringing the bow through the eye of the wind.
tacking - 1 - To change a boat's direction, bringing the bow through the eye of the wind. 2 - To tack repeatedly, as when trying to sail to a point up wind of the boat.
tackle - Lines used with blocks in order move heavy objects.
taffrail - A rail around the stern of a boat.
tail - 1 - The end of a line.
take in - 1 - To remove a sail.
tall buoy - Also called a Dan buoy. A float with a flag at the top of a pole. Used to mark a position such as for a race or a man overboard.
tang - A metal fitting on the mast that the spreaders are attached to.
telltale - A small line free to flow in the direction of the breeze. It is attached to sails, stays in the slot, and in other areas, enabling the helmsman and crew to see how the wind is flowing. Proper use of the telltales can help sailors improve their sail trim.
tenon - The bottom of the mast, with a shape designed to fit into the mast step.
throat - The forward upper corner of a four cornered sail known as a haff rigged sail.
thwart - A seat running across the width a small boat.
thwartships - Also athwartships. Across the width of a boat.
tidal atlas - Small charts showing tidal stream directions and rate of flow.
tidal range - The difference of a tide's high and low water levels.
tide - The predictable, regular rising and lowering of water in some areas due to the pull of the sun and the moon. Tidal changes can happen approximately every 6 or 12 hours depending on the region. To find out the time and water levels of different tides, you can use tide tables for your area. The period of high water level is known as high tide and the period of low water level is known as low tide.
toe rail - A small rail around the deck of a boat. The toe rail may have holes in it to attach lines or blocks. A larger wall is known as a gunwale.
tonnage - The weight or displacement of a ship.
top mast - A mast on top of another mast.
topping lift - A line running from the end of the boom to the top of the mast used to keep the boom from falling when the sail is not set.
topsail - A triangular sail set above the gaff on a gaff rigged boat.
topsides - The sides of the hull above the waterline and below the deck.
tow - To pull a boat with another boat, such as a tugboat towing a barge.
trailing edge - The aft edge of a sail, more commonly called the lleech.
transit - Also called a range. Two navigational aids separated in distance so that they can be aligned to determine that a boat lies on a certain line. Transits can be used to determine a boat's position or guide it through a channel.
trapeze - A belt and line used to help a crew hike out beyond the edge of a boat to counteract the boat's heel. Usually used on small vessels for racing.
triatic stay - A stay leading from one mast, such as the main mast to another, such as the mizzen mast.
tricolor light - A running light allowed on some sailboats instead of the normal bow and stern lights. The tricolor light contains the red and green side lights and the white stern light in a single fitting that is attached to the top of the mast.
trim tab - An adjustable section of the rudder that allows the rudder to be corrected for lee helm or weather helm.
trip line - A line attached to the end of an anchor to help free it from the ground.
tropics - The region around the equator between the Tropic of Cancer and the Tropic of Capricorn. The tropics are known for their warm weather.
trough - The bottom of a wave, the valley between the crests.
truck - A cap for the top of the mast.
true wind - The speed and direction of the wind. The motion of a boat will cause the wind to appear to be coming at a different direction and speed, which is known as apparent wind
turtle