Portal:Underwater diving

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Underwater diving

Commercial Diver Logo.png
Helmet logo for Underwater Diving portal.png
Underwater diving is the practice of going underwater, either with breathing apparatus (scuba diving and surface-supplied diving) or by breath-holding.

Recreational diving is a popular activity (also called sports diving or subaquatics), and includes technical diving, recreational scuba diving, freediving, snuba, snorkeling and a range of competitive sports performed underwater.

Professional diving includes diving as part of one's occupation, and takes a range of diving activities to the underwater work site. Commercial diving, military diving, public safety diving and scientific diving are aspects of professional diving.

Freediving is a form of underwater diving that does not involve the use external breathing devices, but relies on a diver's ability to hold his or her breath until resurfacing. Activities include breath-hold spearfishing, freedive photography, apnea competitions, other underwater sports and to some degree, snorkeling.

The scope of this portal includes the technology supporting diving activities, the physiological and medical aspects of diving, the skills and procedures of diving and the training and registration of divers, underwater activities which are to some degree dependent on diving, economical, commercial, safety, and legal aspects of diving, biographical information on notable divers, inventors and manufacturers of diving related equipment and researchers into aspects of diving,

Selected article

Diver wearing a diving helmet is sanding a repair patch on a submarine
A US Navy diver at work. The umbilical supplying air from the surface is clearly visible

Professional diving is a type of diving where the divers are paid for their work. There are several branches of professional diving, the most well known of which is probably commercial diving. Any person wishing to become a professional diver normally requires specific training that satisfies any regulatory agencies which have local authority, such as US Occupational Safety and Health Administration, United Kingdom Health and Safety Executive or South African Department of Labour. Due to the dangerous nature of some professional diving operations, specialized equipment such as an on-site hyperbaric chamber and diver-to-surface communication system is often required by law.

The primary distinction between professional and recreational diving is that the recreational diver is responsible primarily for his/her own actions and safety but may voluntarily accept limited responsibility for dive buddies, whereas the professional diver is part of a team of people with extensive responsibilities and obligations to each other and usually to an employer or client, and these responsibilities and obligations are formally defined in legislation, regulations, operations manuals, standing orders and compulsory or voluntary codes of practice. In many cases a statutory national occupational health and safety legislation constrains their activities.

Selected biography

John Scott Haldane CH FRS (May 3, 1860 – March 14/March 15, 1936) was a Scottish physiologist famous for intrepid self-experimenting which led to many important discoveries about the human body and the nature of gases. He also used his son J. B. S. Haldane as a guinea pig, even when he was quite young. John Haldane locked himself in sealed chambers breathing lethal cocktails of gases while recording their effect on his mind and body. He visited the scenes of many mining disasters and investigated their causes. When the Germans used poison gas in World War I Haldane went to the front at the request of British secretary of state, Lord Kitchener and attempted to identify the gases being used. One outcome of this was his invention of the first gas mask. His son, J.B.S. Haldane became equally famous, both by extending his father's interest in diving and as a key figure in the development of the modern evolutionary synthesis of the 20th century.

Selected picture

On the way to a dive off Cape Town PA312178.JPG

Recreational divers on the way to a site off Cape Town in a rigid hulled inflatable dive boat.

Categories

Underwater diving(33 C, 34 P)
Underwater divers(9 C, 21 P)
Underwater archaeology(4 C, 25 P)
Armed forces diving(1 C, 55 P)
Diving engineering(34 P)
Diving organizations(3 C, 47 P)
Underwater diving environment(1 C, 3 P)
Diving equipment(16 C, 18 P, 2 F)
Underwater fiction(5 C, 2 P)
Free-diving(1 C, 31 P)
Underwater diving history(1 C, 7 P)
Manned submersibles(7 P)
Marine biology(8 C, 116 P, 1 F)
Marine salvage(1 C, 15 P)
Diving medicine(1 C, 62 P)
Underwater diving physiology(1 C, 11 P)
Underwater diving procedures(7 C, 35 P)
Professional diving(1 C, 4 P)
Recreational diving(2 C, 15 P)
Underwater diving safety(3 C, 34 P)
Scientific diving(2 C, 3 P)
Underwater security(1 C, 4 P)
Shipwreck law(1 C, 11 P)
Underwater diving sites(7 C, 15 P)
Sponge diving(1 C, 13 P)
Underwater diver training(1 C, 3 P)
Underwater sports(9 C, 31 P)
Underwater diving stubs(135 P)

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