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  2. Recreational Dive Planner - Wikipedia

    en.wikipedia.org/wiki/Recreational_Dive_Planner

    The RDP was developed by DSAT and was the first dive table developed exclusively for no-stop recreational diving. [2] There are four types of RDPs: the original table version first introduced in 1988 along with a circular slide rule version called The Wheel, followed by the eRDP, an electronic version introduced in 2005 and the eRDPML, an ...

  3. Deep diving - Wikipedia

    en.wikipedia.org/wiki/Deep_diving

    Depth limit for divers breathing air specified by the British Sub-Aqua Club and Sub-Aqua Association. [16] 60 m (200 ft) Depth limit for a group of 2 to 3 French Level 3 recreational divers, breathing air. [17] 66 m (217 ft) Depth at which breathing compressed air exposes the diver to an oxygen partial pressure of 1.6 bar (23 psi). Greater ...

  4. Dive profile - Wikipedia

    en.wikipedia.org/wiki/Dive_profile

    Dive profile of an actual dive as recorded by a personal dive computer and displayed on a desktop screen using dive logging software. In this case depth is in metres. Personal dive computer display of dive profile and log data. A dive profile is a description of a diver's pressure exposure over time.

  5. Recreational scuba certification levels - Wikipedia

    en.wikipedia.org/wiki/Recreational_scuba...

    CMAS** scuba diver is a certification for recreational scuba diving issued by the Confédération Mondiale des Activités Subaquatiques (CMAS). which indicate that the diver has been found competent to dive in open water to a maximum depth of 40 meters, accompanied by another diver with equivalent or higher certification, with no dive leader ...

  6. Maximum operating depth - Wikipedia

    en.wikipedia.org/wiki/Maximum_operating_depth

    (for example, 50% nitrox can be breathed at twice the pressure of 100% oxygen, so divide by 0.5, etc.). Of this total pressure which can be tolerated by the diver, 1 atmosphere is due to surface pressure of the Earth's air, and the rest is due to the depth in water. So the 1 atmosphere or bar contributed by the air is subtracted to give the ...

  7. Underwater survey - Wikipedia

    en.wikipedia.org/wiki/Underwater_survey

    Depth data may be captured on camera from dive computers or depth gauges carried by the divers or mounted in view of the camera. The photos may be viewed on a map or via a geographic information system (GIS) for analysis. [3] This method can also be used for spatial surveys of small areas, particularly in places where a survey vessel cannot go.

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