PADI Deep Diving Techniques & Planning 4

Question 1

Which equipment item is considered essential and mandatory for every PADI deep dive?

Accepted Answer

Submersible pressure gauge (SPG)

Answer

Underwater camera

Answer

Dive knife

Answer

Compass

Question 2

At what approximate depth do most divers first begin to experience noticeable nitrogen narcosis?

Accepted Answer

100 feet (30 meters)

Answer

33 feet (10 meters)

Answer

66 feet (20 meters)

Answer

130 feet (40 meters)

Question 3

When using recreational dive tables for a deep dive, what is the definition of 'bottom time'?

Accepted Answer

Total elapsed time from leaving the surface to beginning the final ascent

Answer

Time spent below 60 feet only

Answer

Time spent at the maximum depth only

Answer

Time from entering the water to exiting the water

Question 4

A diver plans to reach a maximum depth of 130 feet. According to PADI guidelines, what is the recreational scuba depth limit this dive would approach?

Accepted Answer

The recreational limit is 130 feet; this dive is at the absolute maximum

Answer

The recreational limit is 200 feet; this dive is well within limits

Answer

The recreational limit is 100 feet; this dive exceeds safe recreational limits

Answer

There is no defined recreational limit for certified divers

Question 5

What is the function of a delayed surface marker buoy (DSMB) deployed during ascent from a deep dive?

Accepted Answer

It alerts the surface crew to the diver's position and signals they are ascending

Answer

It marks the dive site on the seafloor

Answer

It provides additional lift to help tired divers ascend

Answer

It measures exact water depth during ascent

Question 6

During a deep dive briefing, the divemaster says 'stay within your personal limits.' What does this mean in practical terms?

Accepted Answer

Do not exceed your training, experience, and comfort level for depth and conditions

Answer

Dive only where water is warm enough for comfort

Answer

Remain within the boundary markers of the dive site

Answer

Never go deeper than 60 feet regardless of certification

Question 7

Which symptom would most strongly suggest a diver is suffering from decompression sickness (DCS) after a deep dive?

Accepted Answer

Joint pain or 'bends' appearing within 24 hours of surfacing

Answer

Sunburn on the back of the neck

Answer

Mild headache immediately upon exiting the water

Answer

Nausea during the boat ride back