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

A submersible pressure gauge is mandatory because monitoring remaining gas supply is critical for safe ascent planning on every dive, especially deep ones.

Question 2

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

Accepted Answer

100 feet (30 meters)

Answer

Noticeable narcosis typically begins around 100 feet (30 meters) for most divers, though individual susceptibility varies significantly.

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

Bottom time is measured from the moment you leave the surface to the moment you begin your final ascent, regardless of depth variations during the dive.

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

PADI sets the recreational scuba diving limit at 130 feet (40 meters), and dives to this depth should only be made by properly trained, experienced 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

A DSMB inflated and sent to the surface signals the boat crew where divers will surface, preventing boat strikes and aiding rescue if needed.

(PADI) Certified Professional Association of Diving Instructors Diver Practice Test

(PADI) Certified Professional Association of Diving Instructors Diver Practice Test

PADI Deep Diving Techniques & Planning 4