CHAPTER 9 — Air Decompression
Change A 9-67
Table 9-10. Surface Decompression Table Using Air (Continued).
Chamber stops
(air) (min)
(feet/meters)
Time (min) at water stops
(feet/meters)
Bottom
time
(min)
Time to
first stop or
surface
(min:sec)
Total
decompression
time
(min:sec)
Depth
feet/meters
30
9.1
20
6.0
10
3.0
Surface
Interval
20
6.0
10
3.0
90
27.4
40
2:40
3
7
17:00
50
2:40
3
18
28:00
60
2:40
3
25
35:00
70
2:20
3
7
30
47:30
80
2:20
13
13
40
73:30
90
2:20
18
18
48
91:30
100
2:20
21
21
54
103:30
110
2:20
24
24
61
116:30
120
2:20
32
32
68
139:30
130
2:00
5
36
36
74
158:30
100
30.4
40
3:00
3
15
25:20
50
2:40
3
3
24
37:50
60
2:40
3
9
28
47:50
70
2:40
3
17
39
66:50
80
2:40
23
23
48
101:50
90
2:20
3
23
23
57
113:50
100
2:20
7
23
23
66
126:50
110
2:20
10
34
34
72
157:50
120
2:20
12
41
41
78
179:50
110
33.5
30
3:20
3
7
17:40
40
3:00
3
3
21
35:10
50
3:00
3
8
26
45:10
60
3:00
18
18
36
80:10
70
2:40
1
23
23
48
103:10
80
2:40
7
23
23
57
118:10
90
2:40
12
30
30
64
144:10
100
2:40
15
37
37
72
169:10
120
35.5
25
3:40
3
6
17:00
30
3:40
3
14
25:00
40
3:20
3
5
25
41:30
50
3:20
15
15
31
69:30
60
3:00
2
22
22
45
99:30
70
3:00
9
23
23
55
118:30
80
3:00
15
27
27
63
140:30
90
3:00
19
37
37
74
175:30
100
3:00
23
45
45
80
201:30
