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TermDefinition
- AsternThe area behind the stern (back) of the vessel Read more
- Nautical Saying At loggerheads At loggerheads is a nautical term referring to two ships positioned with their respective loggers (wooden blocks used for securing the ship's(...) Read more
- AIS An automatic tracking system used on ships and by vessel traffic services (VTS). AIS works over VHF and supplements marine radar, which(...) Read more
- Automatic Identification System An automatic tracking system used on ships and by vessel traffic services (VTS). AIS works over VHF and supplements marine radar, which(...) Read more
- AUV An Autonomous Underwater Vehicle (AUV) is a self-propelled, unmanned underwater vehicle capable of operating independently without direct human(...) Read more
- Autonomous Underwater Vehicle An Autonomous Underwater Vehicle (AUV) is a self-propelled, unmanned underwater vehicle capable of operating independently without direct human(...) Read more
- AutopilotEquipment that allows the boat steer a course automatically using either compass bearing or a course relative to wind direction Read more
- AuxiliaryA term for a saying a boat that has auxiliary power, i.e. an engine Read more
- AwashLevel with the surface of the water which just washes over an object Read more
- Baby StayAn inner forestay Read more
- Back The wind is referred to as backing (it backs) when it moves to blow from a direction that is anticlockwise from its current direction. A(...) Read more
- Back StayThe backstay runs from the top of the mast to the stern of the vessel. The backstay supports the mast and in some cases can be adjusted to(...) Read more
- BailTo remove water from the bilges or cockpit Read more
- BailerA utensil used to bail water out of a boat Read more
- BallA black signal shape displayed when a vessel is at anchor by day Read more
- BallastAdditional weight placed low in the hull to improve stability Read more
- BarA shallow area (shoal) close by a river mouth or harbour entrance or A measure of barometric pressure usually noted as 1000 millibars Read more
- Bare PolesNo sails are set and boat is driven by the force of the wind on the spars and rigging Read more
- BattenStiff strip used to support the roach of a sail, enabling larger sail area and better shape. Read more
- Batten PocketA pocket on the leech of a mainsail to contain the batten Read more