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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.
The first Federal statute concerning copyright in government publications was the Printing Law enacted in 1895. [6] Section 52 of that Act provided that copies of "Government Publications" could not be copyrighted. Prior to 1895, no court decision had occasion to consider any claim of copyright on behalf of the Government itself.
A backplate and wing (often abbreviated as BP&W or BP/W) is a type of scuba harness with an attached buoyancy compensation device (BCD) which can be used to establish neutral buoyancy underwater and positive buoyancy at the surface. Unlike most other BCDs, the backplate and wing is a modular system, in that it consists of separable components.
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,
Underwater diving is practiced as part of an occupation, or for recreation, where the practitioner submerges below the surface of the water or other liquid for a period which may range between seconds to the order of a day at a time, either exposed to the ambient pressure or isolated by a pressure resistant suit, to interact with the underwater ...
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.
Weight belts are the most common weighting system currently in use for recreational diving. [17] Weight belts are often made of tough nylon webbing, but other materials such as rubber can be used. Weight belts for scuba and breathhold diving are generally fitted with a quick release buckle to allow the dumping of weight rapidly in an emergency. [7]
A procedure carried out by scuba divers using the buddy system where each diver checks that the other's diving equipment is configured, fitted, and functioning correctly just before entering the water to dive. buddy diving. Main article: Buddy diving