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A buoyancy compensator (BC), also called a buoyancy control device (BCD), stabilizer, stabilisor, stab jacket, wing or adjustable buoyancy life jacket (ABLJ), depending on design, is a type of diving equipment which is worn by divers to establish neutral buoyancy underwater and positive buoyancy at the surface, when needed.
If a weight harness is worn, or the BCD uses an integrated-weights system, the system is checked for correct assembly and function of clip release. A secondary check is to ensure that the buddy is familiar with the weight system of the diver being checked, and is able to operate it to ditch weights in an emergency.
Examples: The common 80 ft 3 (11 litre, 207 bar) cylinder carries about 6 pounds (2.7 kg) of air when full, so the diver should start the dive about 6 pounds (2.7 kg) negative and use about 1/10 ft 3 (2.7 L)of air in the BCD to compensate at the start of a dive.
This is a glossary of technical terms, jargon, diver slang and acronyms used in underwater diving.The definitions listed are in the context of underwater diving.
The predominant type of BCD currently used in recreational diving is the jacket style BCD. The backplate and wing differs from the jacket style primarily in the way that the functions required of a BCD (attachment to diver, buoyancy control and attachment to cylinder(s)) are performed by distinct components, rather than a single unit.
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NASDS (USA) - National Association of Scuba Diving Schools only USA (Founded in the 1960s and merged with SSI in 1999) [29] TAC - The Aquatic Club - existed in the UK between 1982 and 1986. dissolved organization [30] YMCA SCUBA – Defunct recreational diver training and certification agency (1959-2008). [31] [32]
It is a non-profit, global organization with more than 1,300 members, which promotes scuba diving through consumer awareness programs and media campaigns such as the national Be a Diver campaign; diver retention initiatives such as DiveCaching; and an annual trade-only event for businesses in the scuba diving, action watersports and adventure ...