PADI Underwater Navigation & Skills 5 — Questions and Answers
Question 1: A diver swims a U-shaped navigation pattern. After completing the U, where should the diver end up relative to the starting point?
- Parallel to and offset from the start, not back at the exact starting point (Correct answer)
- Exactly at the starting point
- 180° from the starting point
- 90° to the right of the starting point
Correct answer: Parallel to and offset from the start, not back at the exact starting point
A U-pattern ends up parallel to the start but displaced laterally by the width of the U, useful for covering a strip of area.
Question 2: Why is it important to calibrate your kick cycle in the same gear configuration you'll use during the navigation dive?
- Different equipment creates different drag, changing how far each kick cycle travels (Correct answer)
- Regulators affect kick rhythm and must be matched
- Wetsuits of different thicknesses change compass readings
- Weight belt positioning changes direction of travel
Correct answer: Different equipment creates different drag, changing how far each kick cycle travels
Tank size, wetsuit thickness, and fins all affect hydrodynamic drag and thus the actual distance covered per kick cycle.
Question 3: What skill should a diver practice to improve natural navigation ability over many dives?
- Mentally noting and memorizing entry point features, slopes, and bottom composition as the dive progresses (Correct answer)
- Always diving with a compass even in familiar sites
- Surfacing at 5-minute intervals to take visual bearings
- Following another diver who knows the site
Correct answer: Mentally noting and memorizing entry point features, slopes, and bottom composition as the dive progresses
Actively building a mental map during every dive trains spatial awareness and recall of natural features, the foundation of effective natural navigation.
Question 4: A diver uses a dive light to signal the direction of travel to a buddy during low-visibility navigation. What is the standard signal for 'this way'?
- Point the light beam in the intended direction of travel (Correct answer)
- Sweep the light in a horizontal arc
- Flash the light three times
- Point the light downward
Correct answer: Point the light beam in the intended direction of travel
Pointing the beam in the intended direction of travel is a universally understood and intuitive directional signal between dive buddies.
Question 5: Which of the following BEST describes the 'lost diver' procedure recommended by PADI if you become disoriented underwater?
- Stop, think, observe your surroundings for reference points, then plan your navigation or ascend safely (Correct answer)
- Surface immediately without any safety stop
- Swim in expanding circles until you recognize something
- Inflate your BCD fully and rise to the surface
Correct answer: Stop, think, observe your surroundings for reference points, then plan your navigation or ascend safely
Stopping to assess, think, and look for reference points prevents panic and often resolves disorientation before an emergency ascent is necessary.
Question 6: What is the recommended maximum time a diver should spend attempting to navigate back to the exit point before aborting the dive?
- Navigation attempts should not compromise the minimum air reserve needed for a safe ascent and exit (Correct answer)
- Five minutes of navigation, then surface
- Ten kick cycles in each of four directions
- Two minutes regardless of remaining air
Correct answer: Navigation attempts should not compromise the minimum air reserve needed for a safe ascent and exit
No navigation effort should consume the air reserve needed for safe ascent and exit; the dive must be aborted with sufficient reserves intact.
Question 7: During PADI navigation training, why might an instructor ask students to practice swimming a heading with eyes closed for short intervals?
- To develop proprioceptive awareness of body alignment and detect natural drift without visual cues (Correct answer)
- To simulate night diving conditions
- To practice regulating breathing in darkness
- To test whether the compass is luminescent
Correct answer: To develop proprioceptive awareness of body alignment and detect natural drift without visual cues
Brief eyes-closed swimming reveals a diver's natural kick asymmetry and body drift, helping them recognize and correct their own bias.
PADI Underwater Navigation & Skills 5
A diver swims a U-shaped navigation pattern.
After completing the U, where should the diver end up relative to the starting point?