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June 2005 Vol. 20, No. 6   RSS Feed for Undercurrent Issues
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Dive Computers: Part II

Contents of this Issue:
All publicly available

Tobago, West Indies

The Cypress Sea

Nitrox Myths?

Aqua Lungs Mistral Regulator

Dive Computers: Part II

Unfriendly Skies for Divers

No Safe Harbor

Scubapro MK20 Cracking Problem Reported

Flotsam & Jetsam


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from the June, 2005 issue of Undercurrent   Subscribe Now

Last month we reported on a study that compared performance of the Suunto Solution and Vytec, Uwatec Aladin Pro and Aladin Smart, and Oceanic Versa. Earlier models (the Solution and Aladin Pro) were tested because they are still commonly used, and to determine differences in the updated decompression algorithms incorporated into the newer models. The Aladin Smart proved more conservative on the multilevel profiles than the Aladin Pro and all the other units tested. The Oceanic Versa was consistently less conservative than the other dive computers and the DCIEM tables, except on a series of deep, repetitive bounce dives.

The following tables were inadvertently left out of that article. Table 1 compares initial no-decompression stop limits at various depths, and table 2 shows no-stop times on typical multilevel dives.

Table1: Initial No-decompression Limits (Min) For Depths From 9 To 42 msw

Depth
(m)
Solution
Vytec
Aladin
Pro
Aladin
Smart
Versa
DCIEM
9
222
204
334
324
283
300
12
127
124
121
124
184
150
15
72
72
70
70
85
75
18
52
52
50
50
59
50
21
37
37
30
36
41
35
24
29
29
28
27
32
25
27
23
23
22
21
25
20
30
18
18
16
16
20
15
33
13
13
14
13
17
12
36
11
11
12
11
14
10
39
9
9
10
10
11
8
42
7
7
9
9
9
7

Table 2: Multi-level Dive With Reducing Depth

 
Solution
Vytec
Aladin
Pro
Aladin
Smart
Versa
DCIEM
Level 1 Depth = 30 msw: Time at
level 1 = 5 min: No-stop time allowed
(min) Ascent to level 2 = 1 min
18
16
16
16
20
15
Level 2 Depth = 20 msw; Time at
level 2 = 10 min: No-stop time allowed
(min) Ascent to level 3 = 0.5 min
32
29
27
14
39
23
Level 3 Depth = 15 msw
No-stop time allowed (min)
44
40
37
23
61
35

 

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