CHAPTER 9 — Air Decompression
Change A 9-63
Table 9-9. Surface Decompression Table Using Oxygen.
Time (min) breathing air
at water stops (feet/meters)
Bottom
time
(min)
Time to
first stop or
surface
(min:sec)
Time at
40-foot
chamber
stop (min) on
oxygen
Surface
Total
decompression
time
(min:sec)
Depth
feet/meters
60
18.2
50
15.2
40
12.1
30
9.1
Surface
Interval
70
21.3
50
2:20
2:20
90
2:20
15
22:40
120
2:20
23
30:40
150
2:20
31
43:40
180
2:20
39
51:40
80
24.3
40
2:40
2:40
70
2:40
14
22:00
85
2:40
20
28:00
100
2:40
26
34:00
115
2:40
31
44:00
130
2:40
37
50:00
150
2:40
44
57:00
90
27.4
30
3:00
3:00
60
3:00
14
22:20
70
3:00
20
28:20
80
3:00
25
33:20
90
3:00
30
38:20
100
3:00
34
47:20
110
3:00
39
52:20
120
3:00
43
56:20
130
3:00
48
61:20
100
30.4
25
3:20
3:20
50
3:20
14
22:40
60
3:20
20
28:40
70
3:20
26
34:40
80
3:20
32
45:40
90
3:20
38
51:40
100
3:20
44
57:40
110
3:20
49
62:40
120
2:20
3
53
69:20
110
33.5
20
3:40
3:40
40
3:40
12
21:00
50
3:40
19
28:00
60
3:40
26
35:00
70
3:40
33
47:00
80
2:40
1
40
55:00
90
2:40
2
46
62:00
100
2:40
5
51
70:00
110
2:40
12
54
80:00
