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Mask clearing and dive/surface valve draining. Switching to alternative gas supply: bailout to open circuit is generally considered a good option given any uncertainty about the problem or whether it can be solved. The bailout procedure depends on rebreather details and the bailout equipment. Methods include:
Some are trivially easy for a skilled diver. They include regulator recovery, clearing a flooded mask or helmet, bailout to emergency gas supply, emergency swimming ascent (for scuba), bell abandonment, shedding of weights (scuba), breathing off the pneumofathometer hose (SSDE), and switching over to onboard gas (bell diving).
The DIR view is that it is essential that divers master the skills of mask clearing, even if it takes many repetitions, as inability to adequately clear the mask leads to stress and distraction, and the dislodging of the mask during a stressful stage of a dive may then lead to panic.
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]
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 ]
An entry level diver must learn the techniques of breathing underwater through a demand regulator, including clearing it of water and recovering it if dislodged from the mouth, and clearing the mask if it is flooded. These are critical survival skills, and if not competent the diver is at a high risk of drowning.
Controlled cough is a mucus-clearing technique that involves coughing in a controlled manner. This technique can help dislodge mucus without irritating your airways. Here’s how to try the ...
Breathing from the scuba regulator is first practiced at the water surface. At a shallow depth, clearing the diving mask, removing the regulator from the mouth and replacing and clearing it of water are learned. These two skills are essential for the safety of the participants.
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