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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.
Scuba diver of the late 1960s. The history of scuba diving is closely linked with the history of the equipment.By the turn of the twentieth century, two basic architectures for underwater breathing apparatus had been pioneered; open-circuit surface supplied equipment where the diver's exhaled gas is vented directly into the water, and closed-circuit breathing apparatus where the diver's carbon ...
Burned villages and crops, murdered chiefs, divided councils and civil wars, migrations, towns and forts choked with refugees, economic disruption, breaking of ancient traditions, losses in battle and to disease and hunger, betrayal to their enemies, all made the American Revolution one of the darkest periods in American Indian history. [205]
Illustration of an occupied diving bell.. The diving bell is one of the earliest types of equipment for underwater work and exploration. [10] Its use was first described by Aristotle in the 4th century BC: "...they enable the divers to respire equally well by letting down a cauldron, for this does not fill with water, but retains the air, for it is forced straight down into the water."
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.
BCD Tofu House, a Los Angeles-based Korean restaurant chain; BCD Travel, a provider of global corporate travel management; Belarusian Christian Democracy, a Christian-democratic political party in Belarus. Berkshire Country Day School, an independent school in Lenox, Massachusetts, US
Scuba/BCD harness adjusted and secured, buckles accessible for quick release as applicable. Straps adjusted and lying flat. Weight belt secured, buckle accessible. Belt free to drop clear if ditched in an emergency. Integrated weight system pockets secure, accessible and free to ditch in an emergency.
A diving regulator or underwater diving regulator is a pressure regulator that controls the pressure of breathing gas for underwater diving.The most commonly recognised application is to reduce pressurized breathing gas to ambient pressure and deliver it to the diver, but there are also other types of gas pressure regulator used for diving applications.