9-54 Change A
U.S. Navy Diving Manual—Volume 2
Table 9-7. Residual Nitrogen Timetable for Repetitive Air Dives.
A
0:10
Locate the diver’s repetitive group designation from his previous dive along the diagonal line
above the table. Read horizontally to the interval in which the diver’s surface interval lies.
12:00*
B
0:10
3:21
3:20
12:00*
Next, read vertically downward to the new repetitive group designation. Continue
downward in this same column to the row that represents the depth of the
repetitive dive. The time given at the intersection is residual nitrogen time, in
minutes, to be applied to the repetitive dive.
C
0:10
1:40
4:50
1:39
4:49
12:00*
D
0:10
1:10
2:39
5:49
1:09
2:38
5:48
12:00*
E
0:10
0:55
1:58
3:25
6:35
* Dives following surface intervals of more than 12 hours are not
repetitive dives. Use actual bottom times in the Standard Air
Decompression Tables to compute decompression for such dives.
0:54
1:57
3:24
6:34
12:00*
F
0:10
0:46
1:30
2:29
3:58
7:06
0:45
1:29
2:28
3:57
7:05
12:00*
G
0:10
0:41
1:16
2:00
2:59
4:26
7:36
** If no Residual Nitrogen Time is given, then the
repetitive group does not change.
0:40
1:15
1:59
2:58
4:25
7:35
12:00*
H
0:10
0:37
1:07
1:42
2:24
3:21
4:50
8:00
0:36
1:06
1:41
2:23
3:20
4:49
7:59
12:00*
I
0:10
0:34
1:00
1:30
2:03
2:45
3:44
5:13
8:22
0:33
0:59
1:29
2:02
2:44
3:43
5:12
8:21
12:00*
J
0:10
0:32
0:55
1:20
1:48
2:21
3:05
4:03
5:41
8:51
0:31
0:54
1:19
1:47
2:20
3:04
4:02
5:40
8:50
12:00*
K
0:10
0:29
0:50
1:12
1:36
2:04
2:39
3:22
4:20
5:49
8:59
0:28
0:49
1:11
1:35
2:03
2:38
3:21
4:19
5:48
8:58
12:00*
L
0:10
0:27
0:46
1:05
1:26
1:50
2:20
2:54
3:37
4:36
6:03
9:13
0:26
0:45
1:04
1:25
1:49
2:19
2:53
3:36
4:35
6:02
9:12
12:00*
M
0:10
0:26
0:43
1:00
1:19
1:36
2:06
2:35
3:09
3:53
4:50
6:19
9:29
0:25
0:42
0:59
1:18
1:35
2:05
2:34
3:08
3:52
4:49
6:18
9:28
12:00*
N
0:10
0:25
0:40
0:55
1:12
1:31
1:54
2:19
2:48
3:23
4:05
5:04
6:33
9:44
0:24
0:39
0:54
1:11
1:30
1:53
2:18
2:47
3:22
4:04
5:03
6:32
9:43
12:00*
O
0:10
0:24
0:37
0:52
1:08
1:25
1:44
2:05
2:30
3:00
3:34
4:18
5:17
6:45
9:55
0:23
0:36
0:51
1:07
1:24
1:43
2:04
2:29
2:59
3:33
4:17
5:16
6:44
9:54
12:00*
Z
0:10
0:23
0:35
0:49
1:03
1:19
1:37
1:56
2:18
2:43
3:11
3:46
4:30
5:28
6:57
10:06
0:22
0:34
0:48
1:02
1:18
1:36
1:55
2:17
2:42
3:10
3:45
4:29
5:27
6:56
10:05
12:00*
Repetitive
Dive Depth
feet/meters
Z
O
N
M
L
K
J
I
H
G
F
E
D
C
B
A
10
3.0
**
**
**
**
**
**
**
**
**
**
**
797
279
159
88
39
20
6.1
**
**
**
**
**
**
917
399
279
208
159
120
88
62
39
18
30
9.1
†
†
†
349
279
229
190
159
132
109
88
70
54
39
25
12
40
12.2
257
241
213
187
161
138
116
101
87
73
61
49
37
25
17
7
50
15.2
169
160
142
124
111
99
87
76
66
56
47
38
29
21
13
6
60
16.2
122
117
107
97
88
79
70
61
52
44
36
30
24
17
11
5
70
21.3
100
96
87
80
72
64
57
50
43
37
31
26
20
15
9
4
80
24.4
84
80
73
68
61
54
48
43
38
32
28
23
18
13
8
4
90
27.4
73
70
64
58
53
47
43
38
33
29
24
20
16
11
7
3
100
30.5
64
62
57
52
48
43
38
34
30
26
22
18
14
10
7
3
110
33.5
57
55
51
47
42
38
34
31
27
24
20
16
13
10
6
3
120
36.6
52
50
46
43
39
35
32
28
25
21
18
15
12
9
6
3
130
39.6
46
44
40
38
35
31
28
25
22
19
16
13
11
8
6
3
140
42.7
42
40
38
35
32
29
26
23
20
18
15
12
10
7
5
2
150
45.7
40
38
35
32
30
27
24
22
19
17
14
12
9
7
5
2
160
48.8
37
36
33
31
28
26
23
20
18
16
13
11
9
6
4
2
170
51.8
35
34
31
29
26
24
22
19
17
15
12
10
8
6
4
2
180
54.8
32
31
29
27
25
22
20
18
16
14
11
10
8
6
4
2
190
59.9
31
30
28
26
24
21
19
17
15
13
10
10
8
6
4
2
†
Read vertically downward to the 40/12.2 (feet/meter) repetitive dive depth. Use the corresponding residual nitrogen times
(minutes) to compute the equivalent single dive time. Decompress using the 40/12.2 (feet/meter) standard air decompression
table.
Residual Nitrogen Times (MInutes)
New Repetitive Group Designation
