Glossary
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TermDefinition
- General Nautical Terminology, Signals & Communication AM
A method of transmitting information by varying the strength (amplitude) of a carrier wave in proportion to the signal being sent.
Amplitude...
More Details - Organisation American Sailing Association (ASA)
A US-based organisation that provides sailing education, certification, and accreditation for sailing schools and instructors.
The American...
More Details - General Nautical Terminology Amidships
The central part of a vessel, both longitudinally and laterally, located between the bow and stern.
Amidships is a crucial term in nautical...
More Details - General Nautical Terminology, Signals & Communication Ampitude Modulation (AM)
A method of transmitting information by varying the strength (amplitude) of a carrier wave in proportion to the signal being sent.
Amplitude...
More Details - General Nautical Terminology Anchor
A heavy object, typically made of metal, designed to grip the seabed and hold a vessel in position.
An anchor is a crucial piece of equipment...
More Details - General Nautical Terminology Anchorage
A designated area where a vessel can be securely anchored, typically marked on nautical charts and chosen for its safe holding ground and...
More Details - General Nautical Terminology Anchor Aweigh
The moment when an anchor has been lifted off the seabed and is no longer holding the vessel in place.
The term "anchor aweigh" is a...
More Details - General Nautical Terminology Anchor Ball
A black spherical day shape hoisted on a vessel to signal that it is anchored during daylight hours.
An anchor ball is a crucial piece of...
More Details - General Nautical Terminology Anchor Buoy
A small floating marker attached to an anchor to indicate its location on the seabed.
An anchor buoy is a vital piece of equipment used in...
More Details - General Nautical Terminology Anchor Cable
A heavy-duty rope, chain, or wire used to secure a vessel to its anchor, ensuring it remains stationary in the water.
An anchor cable is a...
More Details - General Nautical Terminology Anchor Light
A white light displayed by a vessel at anchor to indicate its position to other vessels during the night or in poor visibility conditions.
An...
More Details - General Nautical Terminology Anchor Locker
A dedicated storage compartment, typically located in the bow of a vessel, used to store the anchor and its associated gear, such as the rode and...
More Details - General Nautical Terminology Anchor Roller
A fitting mounted on a boat's bow designed to guide, support, and secure the anchor and its rode during deployment and retrieval.
An anchor...
More Details - General Nautical Terminology, Safety Angle of Vanishing Stability (AVS)
The maximum angle of heel at which a vessel can recover to an upright position without capsizing.
The Angle of Vanishing Stability (AVS) is a...
More Details - General Nautical Terminology AntifoulPaint applied to hull below waterline to discourage dirt and wildlife attaching and slowing your progress. Has environmental implications
- General Nautical Terminology, Navigation APEM More Details
- General Nautical Terminology Apparent WindThe wind we feel. If the true wind is hitting the boat on the beam or in front of the beam the apparent wind will be situated between the boat... More Details
- General Nautical Terminology, Navigation Appraise, Plan, Execute, Monitor (APEM) More Details
- Organisation ASA
A US-based organisation that provides sailing education, certification, and accreditation for sailing schools and instructors.
The American...
More Details - General Nautical Terminology AshoreOn the land; or aground

