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Diver down flag being flown on a dive ship. The use of the red and white flag, which was created in the early 1950s by Navy veteran Denzel James "Doc" Dockery of Michigan, and popularized by Ted Nixon of US Divers, [4] is required by law or regulation in many US states, Canada, [5] and some other countries (e.g. Italy). [6]
A surface marker buoy, SMB, dive float or simply a blob is a buoy used by scuba divers, at the end of a line from the diver, intended to indicate the diver's position to people at the surface while the diver is underwater.
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 ...
To prevent the assembly sinking and being lost, the buoy should provide more buoyancy than is required to make the complete system float. For example, if a 20 kg/44 lb weight is used, the buoy must provide more than 20 kg buoyancy: it needs to be more than 20 litres/4.4 gallons in volume, as it must also support its own weight.
Dive boat – Boat used for the support of scuba diving operations; International maritime signal flags – Flag used to communicate something about the ship flying it from a distance; Kayaking – Use of a kayak on water; Scuba diving – Swimming underwater, breathing gas carried by the diver; Sea kayak – Light boat that is paddled
The personal decompression computer, or dive computer, is a small computer designed to be worn by a diver during a dive, with a pressure sensor and an electronic timer mounted in a waterproof and pressure resistant housing and which has been programmed to model the inert gas loading of the diver's tissues in real time during a dive. [31]
Product innovation for scuba divers have also been significant, including the first open-heel adjustable dive fin and the first diving mask with a dedicated nose pocket. Today Cressi is one of only a few companies in the world that manufactures a full line of equipment and accessories for each of its markets.
Diving physics, or the physics of underwater diving, is the basic aspects of physics which describe the effects of the underwater environment on the underwater diver and their equipment, and the effects of blending, compressing, and storing breathing gas mixtures, and supplying them for use at ambient pressure.
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