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Nav finder and underwater compass – basic underwater navigation tools Suunto SK-7 diving compass in aftermarket wrist mount with bungee straps. Diver navigation, termed "underwater navigation" by scuba divers, [1] is a set of techniques—including observing natural features, the use of a compass, and surface observations—that divers use to navigate underwater.
The National Association of Underwater Instructors (NAUI Worldwide) is a nonprofit association of scuba instructors founded in 1960 by Albert Tillman and Neal Hess. [2] [3]NAUI primarily serves as a recreational dive certification and membership organization, providing international diver standards and education programs.
At 37 years, he was also the youngest president in World YMCA history. In 1959 YMCA of the USA developed the first nationally organized scuba diving course and certified their first skin and scuba diving instructors. [26] [27] By 1974, YMCA had set up a curriculum to begin teaching cave diving. [28]
The IDSA training standard comprises 5 modules, of which Module A is theory common to all modes of diving, Module B is commercial scuba diving, Module C is inshore air diving to 30 msw and associated underwater work, Module D is surface supplied offshore air diving to 50 msw using a wet bell and hot water suit, also called extended range ...
ISO 11121 introductory training programmes to scuba diving. (PADI equivalent – Discover Scuba Diving) Most PADI training programes are not directly covered by ISO standards. PADI is a member of the following member councils of the World Recreational Scuba Training Council – the RSTC Canada, the RSTC Europe and the C-Card Council (Japan).
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The procedures vary depending on whether the diver is using scuba or surface supplied equipment. Scuba divers control their own descent and ascent rate, while surface supplied divers may control their own ascents and descents, or be lowered and lifted by the surface team, either by their umbilical, or on a diving stage, or in a diving bell.
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