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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]
Routine scuba diving procedures (order may vary slightly, and some are also relevant to surface supplied diving, though details may vary): Dive planning – The process of planning an underwater diving operation. Selection of equipment – A diver is expected to be able select appropriate equipment and check it for fit and function.
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]
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 ...
Use of a full face mask or diving helmet to protect the airway. [6] Use of surface-supplied diving equipment with voice communications. [7] [5] Adequate swimming skills and fitness for the circumstances. [8] Use of snorkel when appropriate. [8] Lifejackets that hold the wearer's face above the water may be worn when appropriate.
Diving mask. [56] CNS 12498:1989 Chinese National Standard, 潛水鏡檢驗法. Method of test for diving mask. [57] EN 16805:2015 European standard, Diving equipment. Diving mask. Requirements and test methods. [58] A range of 1970s snorkels made to British Standard BS 4532. Snorkels. BS 4532:1969 British standard, Specification for snorkels ...
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When disinfecting diving equipment it is necessary to consider the effectiveness of the disinfectant on the expected or targeted pathogens, and the possible adverse effects on the equipment. Some highly effective methods for disinfection can damage the equipment, or cause accelerated degradation of components due to incompatibility with materials.
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