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A diving mask (also half mask, dive mask or scuba mask) is an item of diving equipment that allows underwater divers, including scuba divers, free-divers, and snorkelers, to see clearly underwater. [1] [2] Surface supplied divers usually use a full face mask or diving helmet, but in some systems the half mask may be used. [2]
A diver in a pool wearing an AGA full face mask A diver wearing an Ocean Reef full face mask Head protection helmet for use with Ocean Reef full face diving mask. A full-face diving mask is a type of diving mask that seals the whole of the diver's face from the water and contains a mouthpiece, demand valve or constant flow gas supply that provides the diver with breathing gas. [1]
It allows diving to 60 metres (200 ft) using air as diluent, or up to 120 metres (390 ft) using heliox and trimix. [2] Some sources describe it as a "Stealth Clearance Divers Life Support Equipment." [3] As of June 2007, the Royal Navy plan to use it to replace the Carleton CDBA. It was introduced into service in 2010.
Surface supplied diving emergency procedures: Mask or helmet clearing – expelling water from the interior of a helmet or full-face mask. Bailout to scuba – Switching to scuba emergency gas supply. Bailout to pneumo hose – Using the pneumofathometer hose as an emergency gas supply.
Standard diving skills include skills like buoyancy control, finning, mask clearing, pre-dive checks and diver communications. They are used all the time, and are seldom lost due to lack of practice. Usually the diver gets better at these skills over time due to frequent repetition.
Diving mask clearing; Diving operation; Diving operations record; Doing It Right (scuba diving) Doing It Right (scuba) Draining the rebreather loop; Drift diving; E.
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