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This is a glossary of technical terms, jargon, diver slang and acronyms used in underwater diving. The definitions listed are in the context of underwater diving. There may be other meanings in other contexts. Underwater diving can be described as a human activity – intentional, purposive, conscious and subjectively meaningful sequence of ...
The usual meaning of diving helmet is a piece of diving equipment that encases the user's head and delivers breathing gas to the diver, but the term "diving helmet", or "cave diving helmet" may also refer to a safety helmet like a climbing helmet or caving helmet that covers the top and back of the head, but is not sealed.
Alternative term for a viewport of a standard diving helmet. light head. See: Dive light#Canister light. The part of a canister light (q.v.) which emits light, and is held in the hand or mounted on the helmet. [62] lightweight helmet. Main article: Diving helmet#Lightweight demand helmets. Low volume, close fitting diving helmet, usually with ...
Lower part of a standard copper helmet and some other heavy helmets, which clamps to the diving suit, rests on the diver's shoulders, and to which the helmet upper part, or bonnet, is clamped, screwed or bolted. counterlung. See: Rebreather#Counterlungs
Hard hat diving is any form of diving with a helmet, including the standard copper helmet, and other forms of free-flow and lightweight demand helmets. The history of breath-hold diving goes back at least to classical times, and there is evidence of prehistoric hunting and gathering of seafoods that may have involved underwater swimming.
1. A term originally referring to diving with standard diving dress, where the helmet is sealed to the watertight diving suit, as contrasted with a shallow-water diving helmet, which is open at the bottom and was used for work in shallow water where the diver could ditch the helmet and make a free ascent in an emergency. Several incompatible ...
This is a glossary of technical terms, jargon, diver slang and acronyms used in underwater diving. The definitions listed are in the context of underwater diving. There may be other meanings in other contexts. Underwater diving can be described as a human activity – intentional, purposive, conscious and subjectively meaningful sequence of ...
Minimise the volume of any enclosed spaces through which the diver breathes. For example, this can happen with diving with a large "bubblehead" helmet. Avoiding breathing shallow (low volume) breaths. The scrubber of a diving rebreather, fails to absorb enough of the carbon dioxide in recirculated breathing gas. This can be due to the scrubber ...