Search results
Results from the WOW.Com Content Network
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.
The government of Spain issued a royal decree taking effect on 1 July 2020 (Real Decreto 550/2020 de 2 de junio: Condiciones de Seguridad de las actividades de buceo), regulating recreational diving activities [16] [17] [18] Restrictions include: a diver must have the appropriate and necessary training for the type of diving intended,
The definitions listed are in the context of underwater diving. There may be other meanings in other contexts. Underwater diving can be described as a human activity – intentional, purposive, conscious and subjectively meaningful sequence of actions. Underwater diving is practiced as part of an occupation, or for recreation, where the ...
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.
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.
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.
NASDS (USA) - National Association of Scuba Diving Schools only USA (Founded in the 1960s and merged with SSI in 1999) [30] TAC - The Aquatic Club - existed in the UK between 1982 and 1986. dissolved organization [31] YMCA SCUBA – Defunct recreational diver training and certification agency (1959-2008). [32] [33]
A variable-buoyancy pressure vessel system is a type of rigid buoyancy control device for diving systems that retains a constant volume and varies its density by changing the weight (mass) of the contents, either by moving the ambient fluid into and out of a rigid pressure vessel, or by moving a stored liquid between internal and external variable-volume containers.