Atlantic Maritime Academy

“Sabby the Lingo?”  Maritime Language – XXV

• Treenails - In wooden ship construction, these were cylindrical pins of oak which were used to secure the planks to her timbers. Pronounced "trennels".
• Trestle Trees - Two short pieces of timber fixed horizontally fore and aft on each side of the lower masthead of a square rigged vessel and used to support the topmast, the lower crosstrees, and the top.
• Triatic Stay - A stay leading from one mast, such as the main mast to another, such as the mizzen mast.

• Trice - To haul up by pulling downwards on a rope that is led through a block or sheave.
  
• Trice Up - The order or action of tying up hammocks in the morning, thus generally applied to putting one's berth and area into order for the day. ¹
  
• Trick - A spell of duty connected with the navigation of a vessel; more particularly, at the wheel or look-out.
  
• Trim - (1) To adjust the sails for best advantage. (2) Fore and aft balance of a boat. If either the bow or stern is depressed, the vessel is said to be down by the bow or down by the stern. (3) To trim is to adjust. It does not just apply to sheets. You can trim the boat or ship (i.e. improve it’s balance)
  
• Trim Tab - An adjustable section of the rudder that allows the rudder to be corrected for lee helm or weather helm.
  
• Trimaran - A multihulled boat with three hulls.
  
• Trip an Anchor - The act of breaking out the flukes of an anchor if they are caught on some obstruction, preventing it from being normally weighed.
  
• Tripline - A line attached to the crown of an anchor and used to help free it in the event it becomes fouled.
  
• Trolling -  To fish by trailing a baited line from behind a slowly moving boat.
  
• 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 Course - A course steered by the compass that has been corrected for variation and deviation
  
• True North Pole - The north end of the earth's axis and also called North Geographic Pole. The direction indicated by 000° (or 360°) on the true compass rose, it is the direction of the North Pole from any place on the earth's surface.
  
• True Wind - The speed and direction of the wind felt or measured when stationary. 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
  
• Trunk - The tall, narrow, waterproof box that houses a vessel's centerboard and allows it to be retracted into the ship's hull.
  
• Tumble Home - The distance the ship's side falls in towards the center line above the load water line. Opposite of flare.
  
• Tuning - The adjustment of the standing rigging, the sails and the hull to balance the boat for optimum performance.
  
• Turk's Head - [image] - An ornamental knot to provide a stopper on the end of a line.
  
• Turn - Complete encirclement of a cleat, bollard, pin or winch by a line. 
  
• Turn of the Bilge - The point where the bottom and the sides of a ship join.
  
• Turn Up - To fasten a rope securely by taking turns around a cleat or bollard.
  
• Turn To - Get to work. ¹
  
• Turnbuckle - A threaded, adjustable fitting, used for stays, lifelines and sometimes other rigging. It is used to to maintain correct tension on standing rigging. Can also be used to pull objects together.
  
• Turning Block - Horizontally mounted block used to re-direct a line on deck.
  
• Turning Mark - A buoy on the race course around which boats must turn.
  
• Turtle - (1) To tip the boat over so that the boat is upside down with the mast pointing down to the sea bottom. (2) A bag in which a spinnaker or other large sail can be stowed with the lines attached so that it can be rapidly raised.
  
• Turtle Back - The top of a wheelhouse, forecastle, etc., having the form of a turtle's back.
  
• 'tween Decks - The space between any decks.
  
• Twine - Small line used for whipping other light duties.
  
• Typhoon - A strong tropical counterclockwise revolving storm the southern hemisphere. In the northern hemisphere these storms revolve clockwise and are known as hurricanes.