1
NAUI INSTRUCTOR SCHOOL EXAM LATEST UPDATE -2026- 100+
QUESTIONS AND VERIFIED ANSWERS ALL THE BEST
M-Value of tissue
The maximum allowable nitrogen (inert gas) pressure in a specific tissue
NAUI recommendation for diving while pregnant
Do not dive while pregnant
Haldane tissue compartments
Haldane - 5 compartments
Modern Computers - Apx. 16 compartments
Tissue compartment
Mathematical model consisting of multiple theoretical tissues and their relative
halftimes
Fast compartments - short halftimes
Slow compartments - long halftimes
Ascent rate at altitude
Slower than at sea level
Extend dive times with gas by
Decreased nitrogen and increased oxygen in breathing gas
, 2
RNT
Residual Nitrogen Time
Tme already spent at the repetitive dive depth (dive tables)
Procedure for missed decompression stops
Remain out of the water, rest, breathe 100% oxygen, drink fluids, be monitored for
signs of decompression illness, transported to a hyperbaric facility if symptoms
arise
SIT
Surface Interval Time
Longer time at the surface allows for increased repeat dive times
Canadian Dive Tables published by the Defense and Civil Institute of
Environmental Medicine (DCIEM)
Based on 20+ years of research pioneered by Kidd and Stubbs (1962)
Swiss Dive Tables
Developed by A.A. Bühlmann at the University of Zurich - EXTENDED TO INCLUDE
ALTITUDE DIVING
If the time spent making a "precautionary stop" at 5 msw (15 fsw) causes your
Total Dive Time to exceed the Dive Time Limits, you should:
Use the Maximum Dive Time as your Total Dive Time
Aching pains an hour after a dive might be:
Decompression sickness
ATA rating for most hyperbaric chambers for treating divers:
6 ATA
Haldane Tissue Half-Times (Compartments)
5, 10, 20, 40, 75 Mins
, 3
High altitude dive
Any dive at greater than 1000 feet
Ideal hyperbaric chamber for dive injury
Multiplace, double-lock chamber rated for service to six atmospheres
Repetitive Dive
Any dive started within 24 hours after a previous dive
NAUI recommended minimum SIT time
60 mins
Dives shallower than 40 ft are considered how deep on NAUI Dive Tables
40 ft
How long after diving should you wait to fly
24 hrs
Can NAUI Dive Tables be applied for decompression of an altitude dive?
No
Who created the RGBM Tables
Bruce R. Wienke
Repetitive Dives must be
Shallower than the previous dive
Minimun SIT for RGBM tables
One hour
NAUI Safety Stop
15 fsw (4.5 msw)/3 minutes
RGBM Sea Level Tables can be used up to what altitude
NAUI INSTRUCTOR SCHOOL EXAM LATEST UPDATE -2026- 100+
QUESTIONS AND VERIFIED ANSWERS ALL THE BEST
M-Value of tissue
The maximum allowable nitrogen (inert gas) pressure in a specific tissue
NAUI recommendation for diving while pregnant
Do not dive while pregnant
Haldane tissue compartments
Haldane - 5 compartments
Modern Computers - Apx. 16 compartments
Tissue compartment
Mathematical model consisting of multiple theoretical tissues and their relative
halftimes
Fast compartments - short halftimes
Slow compartments - long halftimes
Ascent rate at altitude
Slower than at sea level
Extend dive times with gas by
Decreased nitrogen and increased oxygen in breathing gas
, 2
RNT
Residual Nitrogen Time
Tme already spent at the repetitive dive depth (dive tables)
Procedure for missed decompression stops
Remain out of the water, rest, breathe 100% oxygen, drink fluids, be monitored for
signs of decompression illness, transported to a hyperbaric facility if symptoms
arise
SIT
Surface Interval Time
Longer time at the surface allows for increased repeat dive times
Canadian Dive Tables published by the Defense and Civil Institute of
Environmental Medicine (DCIEM)
Based on 20+ years of research pioneered by Kidd and Stubbs (1962)
Swiss Dive Tables
Developed by A.A. Bühlmann at the University of Zurich - EXTENDED TO INCLUDE
ALTITUDE DIVING
If the time spent making a "precautionary stop" at 5 msw (15 fsw) causes your
Total Dive Time to exceed the Dive Time Limits, you should:
Use the Maximum Dive Time as your Total Dive Time
Aching pains an hour after a dive might be:
Decompression sickness
ATA rating for most hyperbaric chambers for treating divers:
6 ATA
Haldane Tissue Half-Times (Compartments)
5, 10, 20, 40, 75 Mins
, 3
High altitude dive
Any dive at greater than 1000 feet
Ideal hyperbaric chamber for dive injury
Multiplace, double-lock chamber rated for service to six atmospheres
Repetitive Dive
Any dive started within 24 hours after a previous dive
NAUI recommended minimum SIT time
60 mins
Dives shallower than 40 ft are considered how deep on NAUI Dive Tables
40 ft
How long after diving should you wait to fly
24 hrs
Can NAUI Dive Tables be applied for decompression of an altitude dive?
No
Who created the RGBM Tables
Bruce R. Wienke
Repetitive Dives must be
Shallower than the previous dive
Minimun SIT for RGBM tables
One hour
NAUI Safety Stop
15 fsw (4.5 msw)/3 minutes
RGBM Sea Level Tables can be used up to what altitude
