AOW Underwater Navigation

Question 1

What are the three techniques for estimating distance underwater?

Answer 1

1 - Kick Cycles
2 - Elapsed Time
3 - Cylinder Pressure

Question 2

What constitutes 1 kick cycle?

Answer 2

The distance covered by both legs completing one fin stroke

Question 3

How can Kick Cycles be used to measure distance?

Answer 3

You compare compare current number of kicks to a known distance - for example if you know it takes 40 kicks to swim 100 feet, you move on average 2.5 feet per kick cycle

Question 4

How can Elapsed Time be used to measure distance?

Answer 4

If you know it takes 30 seconds to swim 100 feet, you can gauge how far you’ve gone based on distance

Question 5

How can Cylinder Pressure be used to measure distance?

Answer 5

When at a constant depth, gas consumption should be relatively stable - X psi per 100 ft. This is less useful when changing depths.

Question 6

What are the four predive observations that can assist with Natural Navigation?

Answer 6

1 - Water Motion
2 - Sun Direction and Angle
3 - Objects and Formations
4 - Depth Finder

Question 7

What is an Out and Back Navigational pattern

Answer 7

You swim in parallel lines rotating your compass 180 degrees at the end of each

Question 8

What are Square or Rectangular Navigational patterns?

Answer 8

You swim a known distance and turn 90 degrees - repeat