Altitude diving is underwater diving using scuba or surface supplied diving equipment where the surface is 300 meters (1,000 feet) or more above sea level (for example, a mountain lake). The U.S. Navy tables recommend that no alteration be made for dives at altitudes lower than 91 meters (300 feet) and dives between 91 meters and 300 meters correction is required for dives over 44 meters sea water (145 feet sea water). Altitude diving is significant in recreational diving because the depths and durations used for dives at altitude are different from those used for the same dive profile at sea level.
Read more about Altitude Diving: Measurement of Depth At Altitude, Decompression When Diving At Altitude, Extreme Altitude Diving
Famous quotes containing the words altitude and/or diving:
“On a level plain, simple mounds look like hills; and the insipid flatness of our present bourgeoisie is to be measured by the altitude of its “great intellects.””
—Karl Marx (1818–1883)
“all the fine
Points of diving feet together toes pointed hands shaped right
To insert her into water like a needle”
—James Dickey (b. 1923)