PADI Deep Diving Techniques & Planning 3

Question 1

A diver notices their dive computer showing a flashing NDL warning at 80 feet. What is the correct action?

Accepted Answer

Begin a controlled ascent immediately to a shallower depth

Answer

Continue the dive until the NDL reaches zero

Answer

Descend deeper to reset the NDL

Answer

Perform an emergency ascent to the surface

Question 2

What is the recommended minimum surface interval between repetitive deep dives?

Accepted Answer

At least 1 hour, or as directed by dive tables/computer

Answer

15 minutes

Answer

30 minutes

Answer

3 hours minimum always

Question 3

Which gas law explains why air consumption increases dramatically during deep dives?

Accepted Answer

Boyle's Law

Answer

Henry's Law

Answer

Dalton's Law

Answer

Charles's Law

Question 4

During a deep dive, a buddy suddenly becomes unresponsive at 90 feet. What is the first priority?

Accepted Answer

Establish positive buoyancy and begin a controlled ascent

Answer

Administer in-water rescue breathing immediately

Answer

Signal other divers and note the time

Answer

Remove the buddy's weight belt immediately

Question 5

What effect does cold water have on nitrogen narcosis during deep dives?

Accepted Answer

Cold water can worsen narcosis effects by reducing diver comfort and alertness

Answer

Cold water eliminates narcosis entirely

Answer

Cold water has no effect on narcosis

Answer

Cold water delays the onset of narcosis

Question 6

A dive plan calls for a maximum depth of 100 feet with a 20-minute bottom time. Which contingency plan is MOST important to include?

Accepted Answer

An emergency ascent procedure if air runs low

Answer

A plan for mild currents

Answer

A route for exploring the seafloor

Answer

A schedule for underwater photography stops

Question 7

What does the term 'reverse dive profile' mean, and why is it generally discouraged for deep dives?

Accepted Answer

Doing the deepest portion last in a series of dives; it can increase DCS risk

Answer

Ascending before descending; it wastes bottom time

Answer

Starting a dive at low tide; it reduces visibility

Answer

Diving without a buddy; it is prohibited by PADI