In ballast trim, is when she has only ballast on board.
Also, to arrange the sails by the braces with reference to the wind.
Trip. To raise an anchor clear of the bottom.
Tripping Line. A line used for tripping a topgallant or royal yard in sending it down.
Truck. A circular piece of wood, placed at the head of the highest mast on a ship. It has small holes or sheaves in it for signal halyards to be rove through. Also, the wheel of a gun-carriage.
Trunnions. The arms on each side of a cannon by which it rests upon the carriage, and on which, as an axis, it is elevated or depressed.
Truss. The rope by which the centre of a lower yard is kept in toward the mast.
Trysail. A fore-and-aft sail, set with a boom and gaff, and hoisting on a small mast abaft the lower mast, called a trysail-mast. This name is generally confined to the sail so carried at the mainmast of a full-rigged brig; those carried at the foremast and at the mainmast of a ship or bark being called spencers, and those that are at the mizzenmast of a ship or bark, spankers.
Tumbling home. Said of a ship's sides when they fall in above the bends. The opposite of wall-sided.
Turn. Passing a rope once or twice round a pin or kevel, to keep it fast. Also, two crosses in a cable.