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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]
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.
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]
This can interfere with clear vision, requiring the diver to flush it out. Reasons for leakage include poor fit, stray hair breaking the seal, facial muscle movement that causes temporary leaks, or the impact of external objects against the mask. [12] Most diving masks can fog up due to condensation on the inside of the faceplate.
Hold mask in place with hand. Practice diving with no mask. [19] Spare mask in emergency spares for team. [19] Use of full face mask that is more securely attached to the head and tethered by the hose. [6] Buoyancy compensator blow-up. (uncontrolled inflation) Uncontrolled ascent with possible decompression problems Inflation valve stuck open.
To avoid barotrauma, the diver equalises the pressure in all air spaces with the surrounding water pressure when changing depth. The middle ear and sinus are equalised using one or more of several techniques, which is referred to as clearing the ears. [5] The scuba mask (half-mask) is equalised during descent by periodically exhaling through ...
Diving skills can be grouped by skills relating to the mode of diving – freediving, scuba, surface supplied or saturation diving – and whether the skill is a standard skill used in everyday diving, an emergency skill to keep oneself alive when something goes wrong, or a rescue skill to be used in the attempt to assist another diver in ...
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