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Divers wear diver weighting systems, weight belts or weights to counteract the buoyancy of other diving equipment, such as diving suits and aluminium diving cylinders, and buoyancy of the diver. The scuba diver must be weighted sufficiently to be slightly negatively buoyant at the end of the dive when most of the breathing gas has been used ...
Standard diving dress, also known as hard-hat or copper hat equipment, deep sea diving suit or heavy gear, is a type of diving suit that was formerly used for all relatively deep underwater work that required more than breath-hold duration, which included marine salvage, civil engineering, pearl shell diving and other commercial diving work, and similar naval diving applications.
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Seac Sub Italian manufacturer of diving equipment for scuba, freediving, spearfishing and snorkelling. [120] Seadive – (See Oceanways (brand)) Seamless Rubber Company – Nemrod scuba regulators. [3] Sea Pearls – Acquired by XS Scuba in 2007. Diving weights. fill check pressure gauges [121] Seapro – (See Watergill)
Weight-belts of conventional design are fastened around the waist and load the lower back when the diver is trimmed horizontal. This can cause lower back pain, particularly when the weights are heavy to compensate for the buoyancy of a dry suit with thick undergarments. Weights supported by the harness distribute the load more evenly. [71]
Scuba diving equipment can make the diver buoyant, requiring the addition of ballast to make it possible to submerge and remain submerged until the diver wants to surface. The amount and distribution of dive weights affects the convenience, efficiency, environmental impact, and safety of the diver. [58] [6]
Diver trimmed with weight far towards the feet: The static moments of buoyancy and weight cause the feet to rotate downwards, and the thrust from finning is then also directed downwards Diver with weight and centre of buoyancy aligned for level trim: The static moments of buoyancy and weight keep the diver horizontal, and fin thrust can be aligned with direction of motion for best efficiency
The diver needs to be able to establish three states of buoyancy at different stages of a dive, [24] using weights and a buoyancy compensator to control buoyancy. Weighting is the first stage of buoyancy control. The diver must be able to achieve neutral buoyancy at all stages of the dive.
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