Dive Scenarios

Question 0

Given gas failure at random depth (20-130) describe RAS deployment and gas usage at appropriate ascent rate and safety stop at 15-20 feet.

Answer 0

depth (20-130)

• describe RAS deployment
• gas usage at appropriate ascent rate and safety stop at 15-20 feet.

Question 1

Given a 2700psi 80ALGiven random elapsed time(1-30) and random depth (20-130) calculate: 1-Gas used 2-Gas remaining 3-Bottom time remaining

Answer 1

1-Gas used
2-Gas remaining
3-Time left

Question 2

Given rdm fill (2000-3000) and depth, state dive waypoints and estimate gas usage and times at each.

Answer 2

Typical waypoints could include the

1. first “go, no go” check during descent; 20 ft
2. arrival at target depth;
3. turning point;
4. arrival back at ascent point and departure from bottom;
5. arrival at safety stop.

Question 3

No Drysuit or primary and secondary bcd failure. Explain steps to ascend.

Answer 3

1. Try to swim up.
2. Drop some weight
3. Lift bag (Reel or inflate clip to DRing and vent off)
4. Dump some or all of weight. Flare last 30 feet exhale continuously.

Question 4

Given random heading rounded to 5 deg state reciprocal heading

Answer 4

Random number reciprocal heading

Question 5

Given a random course heading and assuming a navigation obstruction state a 4, 90deg box path around obstruction stating kick cycle and all degree headings

Answer 5

1. )Generate random heading and KC #

2. )State kick cycle # and all degree headings (box)

Question 6

Given a random course heading and assuming a navigation obstruction state a 45-90-45 triangle path around obstruction stating kick cycle and all degree headings

Answer 6

1. ) Generate a random course heading and KC #

2. ) State a 45-90-45 triangle path around obstruction stating kick cycle and all degree headings

Question 7

State Cardinal compass bearings

Answer 7

N-271-90
E-0-180
W-181-360
S-91-270

Question 8

State the 5 waypoints for ascent

Answer 8

1. Planned Maximum Depth or Actual Average Depth2. Off-Gassing Ceiling3. First Running Stop
2. Staged Decompression Stop(s)
3. Surface and Surface Interval

Question 9

How do you calculate the off-gassing ceiling?

Answer 9

this point at a little less than one and a half bar / ata shallower than the average depth. -45 ft of average depth

Question 10

Describe a 5 waypoint ascent with depths and ascent behavior

Answer 10

Waypoints 1-2: 30ft/min (no slower) 2-3: 30ft/min(no fast)

3-4: 10ft/min (running stop and safety stop), 4-5 10ft/min then SIT