Glossary
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TermDefinition
- General Nautical Terminology, Navigation Tide Tables
Charts or listings that provide the predicted times and heights of high and low tides for specific coastal locations over a given period.
Tide...
More Details - General Nautical Terminology TillerA lever attached to the rudder head by which the helmsman moves the rudder
- General Nautical Terminology, Navigation Time Dilution of Precision (TDOP)
A measure used in satellite navigation systems, such as GPS, to quantify the effect of errors in the timing of satellite signals on the accuracy...
More Details - General Nautical Terminology, Navigation Time to Closest Point of Approach (TCPA)
A measure used primarily in maritime and aviation contexts to estimate the time until two moving objects (e.g., ships or aircraft) reach their...
More Details - General Nautical Terminology, Navigation Time to Go (TTG)Estimated time remaining to a waypoint giving an indication of arrival time
- General Nautical Terminology, Navigation Time Zone (TZ)
A time zone is a region of the Earth where the same standard time is used.
A time zone is a geographical area that observes a uniform standard...
More Details - Flag Semaphore, Signals & Communication Letter T (Flag Semaphore)
Flag semaphore indicating the letter T.
- Morse Code, Signals & Communication Letter T (Morse Code)
International Morse Code sequence representing the letter T.
- General Nautical Terminology Toe Rail
A low, raised edge running along the outer perimeter of a boat's deck, designed to provide footing stability and prevent gear or crew from...
More Details - General Nautical Terminology Topping Lift
A line or wire used to support the boom of a sailboat when the sail is not hoisted, or to adjust the height of a spinnaker pole.
A topping...
More Details - General Nautical Terminology Topsides
The outer hull of a vessel above the waterline, extending from the deck to the water's edge.
The term "topsides" is a fundamental concept in...
More Details - General Nautical Terminology, Navigation Traffic Separation Scheme (TSS)
A navigation system designed to organise the flow of vessel traffic in congested or high-risk areas, ensuring safe passage by separating opposing...
More Details - General Nautical Terminology, Navigation TransitTwo fixed objects are in transit when they are in line
- General Nautical Terminology Transom
The transom is the flat, vertical surface at the back of a boat. It is typically where the outboard motor or stern drive is attached to a motor...
More Details - General Nautical Terminology TravellerSiding mechanism to adjust the aft end of the boom.
- General Nautical Terminology Tri-colour LightMasthead light combining red, green and white lights in one unit.
- General Nautical Terminology Trim
Trim is the adjustment of a boat's sails, weight distribution, and angle relative to the water to optimise performance, balance, and...
More Details - General Nautical Terminology TrimaranA vessel with three hulls
- General Nautical Terminology Trim TabsFlaps which can be pushed up or down to adjust the angles of the bow and heel on a motor vessel
- Organisation Trinity House
Trinity House is a maritime organisation responsible for maintaining navigational aids, including lighthouses and buoys, along England, Wales,...
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