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Recreational Dive Planner (RDP) Flashcards

7 cards from real PADI practice questions. Tap to flip, then mark Knew It or Still Learning — missed cards come back until you master them.

Read the first 7 Recreational Dive Planner (RDP) flashcards as text

  1. A diver surfaces from a first dive as pressure group 'P'. According to the RDP, what does this suggest?

    Answer: The diver is at or very near the no-decompression limit and carries a high level of residual nitrogen

    Pressure group P is close to the maximum letter on the RDP, indicating a high level of residual nitrogen near the NDL.

  2. What is the recommended ascent rate according to PADI when using the RDP?

    Answer: 30 feet (9 m) per minute or slower

    PADI recommends ascending at 30 feet (9 meters) per minute or slower to allow safe nitrogen elimination.

  3. Which of the following activities should a diver AVOID after a dive to prevent increasing DCS risk, according to PADI RDP guidelines?

    Answer: Flying or traveling to altitude before sufficient off-gassing

    Flying or ascending to altitude after diving reduces ambient pressure, causing residual nitrogen to expand and potentially cause DCS.

  4. When using the RDP eRDPml (multi-level version), what is the primary advantage over the table version?

    Answer: It accounts for actual depth changes during a dive, giving credit for time spent at shallower depths

    The eRDPml calculates nitrogen loading level by level, giving credit for time at shallower depths rather than assuming the entire dive at the deepest point.

  5. A diver surfaces as pressure group 'G' and wants to return to pressure group 'C' before the next dive. How would they find the required surface interval?

    Answer: Table 2 — find row G and look across to column C to read the surface interval

    Table 2 is the Surface Interval Credit Table; find your starting group on the left and scan across to your desired end group to read the required surface interval.

  6. According to PADI, after how many hours should a diver wait before flying after a single recreational no-decompression dive?

    Answer: At least 12 hours

    PADI recommends a minimum pre-flight surface interval of 12 hours after a single no-decompression dive.

  7. What is the purpose of the 'pressure group' letters (A through Z) on the RDP?

    Answer: To represent how much residual nitrogen a diver has in their body after a dive

    Pressure group letters are a shorthand code for the amount of residual nitrogen dissolved in a diver's tissues after a dive.