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Scuba divers generally carry self-contained lights, but surface supplied divers may carry lights powered by cable supply . A dive light is routinely used during night dives and cave dives, when there is little or no natural light, but also has a useful function during the day, as water absorbs the longer (red) wavelengths first then the yellow ...
Apeks – British manufacturer of scuba diving equipment – Scuba regulators, buoyancy compensators, harnesses, masks, fins, lights, diving suits and accessories. [6] Acquired by AquaLung in 1997. [7] Apollo (dive gear) Scuba masks, fins, diver propulsion vehicles, dive lights. [8] Apple – American multinational technology company – Dive ...
Scuba diving with back-mounted manifolded twins and sling mounted decompression gas. When using multiple gas sources and mixtures it is important to avoid confusing the gas mix in use and the pressure remaining in the various cylinders. The cylinder arrangement must allow access to cylinder valves when in the water.
Normal requirements for night diving are a dive light, and adequate protection from exposure. [1] Some precautions and skills for night diving include: avoiding shining the light in other divers' eyes, to be aware of and use surface light signals for bearings, and if appropriate to use an illuminated shotline buoy. [1]
Recreational scuba diver The undersea kelp forest of Ana Capa off of the coast of Oxnard, California Diver looking at a shipwreck in the Caribbean Sea. Scuba diving is a mode of underwater diving whereby divers use breathing equipment that is completely independent of a surface breathing gas supply, and therefore has a limited but variable endurance. [1]
For safety and efficiency, divers may need to communicate with others diving with them, or with their surface support team. The interface between air and water is an effective barrier to direct sound transmission, [9] and the natural water surface is also a barrier to visual communication across the interface due to internal reflection, particularly when not perfectly smooth.
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