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Typical fields in a recreational diver's log book would be the following: Header - Contains basic information about the date, time and location of the dive. Profile - Records sufficient detail to show the profile of the dive. Equipment - Shows what the diver was wearing and what dive gear was used during the dive.
The threads of cylinder and valve must be of matching thread specification, clean and full form, undamaged and free of cracks, burrs and other imperfections. Tap marks [note 3] are acceptable and should not be confused with cracks. Other neck surfaces will also be examined to be sure they are free from cracks.
In scuba diving, the dive log documents the experience of a diver by logging a diver's dives. In the fishing industry, a logbook is used to record catch data as part of the fisheries regulations. It is then submitted to the fishing authorities of the vessel's flag state. [citation needed]
Agnes Milowka. This is a list of underwater divers whose exploits have made them notable. [a] Underwater divers are people who take part in underwater diving activities – 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 order of a day at a ...
It is usually done while scuba diving, but can be done while diving on surface supply, snorkeling, swimming, from a submersible or remotely operated underwater vehicle, or from automated cameras lowered from the surface. Underwater photography can also be categorised as an art form and a method for recording data.
The invention revolutionised autonomous underwater diving by providing a compact, reliable system capable of a greater depth range and endurance than its precursors, and was a major factor influencing the development of recreational scuba diving after WWII. The twin-hose Aqua-Lung demand regulator is the foundation of all modern scuba regulators.
The common term for a place at which one may dive is a dive site (from "dive" and "site", meaning "the place, scene, or point of an occurrence or event". [64]) As a general rule, professional diving is done where the work needs to be done, and recreational diving is done where conditions are suitable.
The length of the distance line used is dependent on the plan for the dive. An open water diver using the distance line only for a surface marker buoy may only need 50 metres (160 feet), whereas a cave diver may use multiple reels of lengths from 25 ft (7.6 m) to 1000+ ft (300 m).