Glossary

A position or direction towards the rear (stern) of a vessel relative to a specific point of reference on the boat.

In maritime terminology,...

To reduce in intensity, force, or degree, especially in relation to wind, waves, or other marine conditions.

Abate refers to the lessening or...

The position or direction at right angles to the centreline or keel of a vessel, typically on either side of the boat.

Abeam describes...

Something done openly, honestly, and straightforwardly without deceit or dishonesty. It originates from pirates hiding crew members below deck...

The area of a boat or ship located on the main deck or any higher deck levels. This area is typically exposed to the elements and is where...

An unintentional and often abrupt change in a sailing vessel's course that causes the boom to swing violently across the boat, typically due to a...

The International Maritime Signal Flag Alpha.

Meaning

I have a diver down; keep well clear at slow speed.
If appended with a Numeral...

A vessel that is floating without being anchored, moored, or under control, often at the mercy of wind and currents. 

Adrift describes a...

The RYA Advanced Pilotage course focuses on navigating in challenging conditions, such as night cruising or confined waterways. Participants...

The state of being buoyant and on the water's surface, not submerged or sinking. 

Afloat is a term commonly used in the maritime world to...

The rear or stern section of a vessel, towards the back of the boat or ship.

Aft is a directional term used to describe the position or...

The portion of a vessel's deck located towards the stern, or rear, of the ship.

The after deck, sometimes referred to as the aft deck, is a...

The situation when a vessel is stuck on the seabed or shore, unable to move freely in the water.

When a vessel is aground, the hull has come...

The direction in front of a vessel, typically along its forward course or heading.

In maritime terminology, ahead is commonly used to describe...

A nautical greeting or hail used to attract attention, signal presence, or establish communication between vessels or individuals at...

A type of watercraft that uses a cushion of pressurised air beneath its hull to reduce friction and enable movement over water, land, or other...

A maritime communication system that automatically transmits and receives vessel information such as position, speed, and course to enhance...

The side of a vessel that is sheltered from the wind, also known as the leeward side.

Alee is a nautical term used to describe the side of a...