PLAIN WORDS FOR AN UNDERWATER WORLD

The diving glossary.

From buoyancy to buddy briefings: 103 terms to help you understand what you’re reading, hearing and learning.

10 definitionsIntroductory edition · Review pending

Underwater science

Backscatter

Light scattered back towards a camera or observer by particles in the water.

Underwater science

A unit of pressure equal to 100,000 pascals.

Equipment

Buoyancy control device: equipment with an inflatable chamber used as part of a diver’s buoyancy system.

Planning and conditions

A dive accessed from a vessel.

Planning and conditions

Vessel movement in an area that needs consideration in local planning and briefings.

Underwater science

For a fixed amount of gas at constant temperature, pressure and volume vary inversely.

Underwater science

Gas intended for breathing during the activity; its composition and suitability must be established.

Diving together

A discussion that explains the intended activity, arrangements and relevant conditions.

Diving together

A diving partner participating in an agreed system of communication and mutual awareness.

Underwater science

The upward force exerted by a fluid on an immersed object.