PADI Dive Planning and Management 5 — Questions and Answers
Question 1: Which factor should be evaluated when planning a dive in an area with known boat traffic?
- The type of fish species present at the site
- Entry/exit points away from traffic lanes and use of a dive flag (Correct answer)
- The salinity of the water at the surface
- Whether divers carry underwater cameras
Correct answer: Entry/exit points away from traffic lanes and use of a dive flag
Planning entry/exit away from boat traffic lanes and displaying a dive flag protects divers from vessel strike while on the surface.
Question 2: What is the significance of the 'no-decompression limit' (NDL) in dive planning?
- It defines the maximum number of dives allowed in one day
- It is the maximum time at a given depth that allows a direct ascent without mandatory decompression stops (Correct answer)
- It sets the minimum surface interval required between dives
- It limits the number of divers permitted in a single group
Correct answer: It is the maximum time at a given depth that allows a direct ascent without mandatory decompression stops
The NDL is the maximum bottom time at a specific depth that allows a diver to ascend directly to the surface without mandatory decompression stops.
Question 3: During dive planning for a boat dive, why is it important to know the anchoring or mooring situation at the site?
- Anchor type affects water salinity
- It determines where divers can safely enter and exit and avoids entanglement hazards (Correct answer)
- Mooring buoys indicate the maximum depth at a site
- It affects radio communication range with shore
Correct answer: It determines where divers can safely enter and exit and avoids entanglement hazards
Knowing the anchor or mooring setup helps identify safe entry/exit locations, avoid anchor lines as hazards, and plan navigation routes underwater.
Question 4: A diver is planning to dive at 80 feet (24 meters). Using the RDP, what information does the diver need to determine the adjusted no-decompression limit for a repetitive dive?
- Only the planned depth for the second dive
- The pressure group letter after the surface interval and the planned depth of the repetitive dive (Correct answer)
- The water temperature and visibility at depth
- The tank pressure remaining from the first dive
Correct answer: The pressure group letter after the surface interval and the planned depth of the repetitive dive
For a repetitive dive, the diver must find their pressure group after the surface interval, then use that letter and the planned depth to look up the adjusted NDL on the RDP.
Question 5: Which statement best describes the concept of 'dive leadership' in group dive planning?
- The dive leader dives alone ahead of the group to scout conditions
- One person takes responsibility for pre-dive planning, briefing, in-water supervision, and emergency coordination (Correct answer)
- Leadership rotates randomly among group members during the dive
- The most experienced diver automatically leads regardless of local knowledge
Correct answer: One person takes responsibility for pre-dive planning, briefing, in-water supervision, and emergency coordination
Effective dive leadership means one qualified individual owns the entire process from planning through emergency readiness, ensuring accountability and group safety.
Question 6: What is the primary reason divers plan a turn-around point based on air supply rather than time?
- Time-based turns are too complex to calculate underwater
- Air consumption rates vary by individual, depth, and exertion, making tank pressure a more reliable indicator (Correct answer)
- Time-based planning is only valid for freshwater dives
- Dive computers cannot track elapsed time accurately
Correct answer: Air consumption rates vary by individual, depth, and exertion, making tank pressure a more reliable indicator
Because consumption rates vary widely between divers and conditions, monitoring actual tank pressure provides a direct, accurate measure of remaining breathable air.
Question 7: When organizing a dive for a mixed-experience group, how should the dive plan accommodate novice divers?
- Novice divers should be given more complex navigation tasks to build skills
- Plan depth, bottom time, and conditions to the limits of the least experienced diver (Correct answer)
- Experienced divers should dive separately to avoid slowing down
- Assign novice divers to lead the group for confidence building
Correct answer: Plan depth, bottom time, and conditions to the limits of the least experienced diver
The dive plan must be designed around the least experienced diver's skill level, certification limits, and comfort to ensure the safety of the entire group.
PADI Dive Planning and Management 5
Which factor should be evaluated when planning a dive in an area with known boat traffic?