Dive Table and Dive Computer Comparison
Is your dive computer liberal or conservative?

There's more to buying a dive computer than choosing one that looks good or has a good reliability history.  Different brands of dive computers base their dive NDLs on different dive tables and have different levels of conservatism.   Buying a computer that has an overly conservative algorithm could force you to cut a dive short, or keep you out of the water while your buddies go down for that 3rd or 4th dive.

We've created a table comparing several different dive tables and manufacturers.
 

These scuba dive table comparisons are provided as a reference only, and are in no way to be used for dive planning, a dive profile, or to figure a safe bottom or deco time.
Additionally, if you're in the market for a dive computer, download the manual for the model you're interested in from the manufacturer before buying and double check the dive table just in case it varies from what we have listed here.

Depth
(feet)
USN &
NOAA
PADI SSI NAUI DCIEM Buhlmann Dive Rite Nitek Duo

Buhlmann ZH-L16

Oceanic
Sherwood
Aeris
Genesis
Mares
All are Pelagic
units based on
a modified
Haldanean algorithm
Uwatec,  Tusa,
Scubapro,
Galileo
Aladdin
(Based on
Beuhlman ZH-L8ADT algorithm.)
Cressi-Sub
(Models EDY, Archimede)
Suunto
(Reduced
Gradient Bubble
Model)
30 405 205+ 205 -- 150 -- -- 260 -- 200 170
40 200 140 130 130 90 125 125 137 99+ 104 100-112
50 100 80 70 80 70 75 81 81 71 66 67-70
60 60 55 50 55 50 51 57 57 51 47 40-48
70 50 40 40 45 35 35 35 40 36 35 25-34
80 40 30 30 35 25 25 30 30 28 25 15-27
90 30 25 25 25 20 20 24 24 22 19 10-20
100 25 20 20 22 15 17 19 19 16 16 8-15
110 20 16 15 15 12 14 16 16 14 13 5-12
120 15 13 10 12 10 12 13 13 12 11 5-10
130 10 10 5 8 8 10 11 11 10 9 5-8
140 10 8       9 9 9 9 8 5-6
150 5           8 8 8 7 5
160 5           7 7 7 7  
170 5           7 7 6    
180 5           6 6 6    
190 5           5 5 5    

 

 

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