Document Title
Document No.
Revision Date
Table 1-26 and 1-26x Surface Decompression Using Oxygen
SDC-HSE-JWL-T126126xSDUO-0010-001
March 16, 2004 Revision No. 1 Page 1 of 16
Table 1-26 SURFACE DECOMPRESSION USING OXYGEN WITH NITROX OR AIR IN WATER STOPS
BOTTOM
TIME
(MINS)
52
90
120
150
180
TIME
TO 1 ST
STOP
1:36
1:36
1:36
1:36
1:36
80
IN WATER Stops (mins) at Depths (feet)
Breathing Nitrox or Air
70 60 50 40 30
SURFACE
INTERVAL
*
IN CHAMBER
ON OXYGEN
50 40
SUPERIOR DIVING OPERATIONAL DEPTH/TIME LIMIT
3
3
3
3
3
NOT TO
EXCEED 5
MINUTES
10
10
10
10
15
23
31
39
NO OF
AIR
BREAKS
1
2
2
2
ASCENT DECOMP
TIME
(MINS)
10
MINUTES
O2
**
5:36
50:36
63:36
71:36
79:36
REPET
GROUP
K
N
0
Z
Z
DIVE PROCEDURES – TABLE 1-26 Surface Decompression Using Oxygen with Nitrox or Air in Water Stops
IN WATER PHASE
* Ascent procedures

25 feet per minute to the first stop
 Ascent time between stops & from 30 feet to surface is ONE MINUTE

Decompression time as specified begins on arrival at the stop depth

Do not include ascent time as part of stop times

Delays at earlier stops are not to be compensated for at later stops
*50/50 Nitrox Switch

Switch to 50/50 Nitrox at 100 feet during ascent

Nitrox decompression mix is not to be connected to the manifold until the diver passes 100 feet
 On surface divers umbilical is to be flushed thoroughly with air prior to starting next dive
 Umbilical flush is to be formally logged
CHAMBER PHASE

Diver is recompressed to 50 feet in 30 seconds and is to be breathing oxygen within 3 minutes of arriving at 50 feet
 Remain at 50 feet for 10 minutes then ascend to 40 feet in 1 minute

On arrival at 40 feet the first air break is given prior to starting Oxygen time at this depth

Breath Oxygen for the time listed broken into cycles of 20 minutes interspersed with 5 minute air breaks
ASCENT FROM 40 FEET

** On completion of total Oxygen time at 40 feet surface the diver at the rate 4 feet per minute (10 minutes)
 Diver to breath Oxygen during the entire ascent.
LOSS OF NITROX

If there is a loss of Nitrox, switch diver to Air and decompress according to table * REPETITIVE DIVES – Are only permitted after a minimum surface interval of 6 hours
 Previous bottom time must have been such that divers repet group was no greater than ‘O’

Refer to table 1-10 for Repetitive Group Designator (RGD) not to exceed ‘O’
 Refer to Table 1-12 for new RGD at the end of the surface interval
 Using new RGD refer to Table 1-13 for Residual Nitrogen Time (RNT)
70 FEET
* Surface Interval

Upon surfacing the diver has 3 and a half minutes maximum to start recompression in the chamber
NOTE: On any occasion that the Depth or Bottom Time falls within 2 feet or 2 minutes of a Depth or Time increment of a schedule use the next Deeper and/or next longer schedule.

Document Title
Document No.
Revision Date
Table 1-26 and 1-26x Surface Decompression Using Oxygen
SDC-HSE-JWL-T126126xSDUO-0010-001
March 16, 2004 Revision No. 1 Page 2 of 16
Table 1-26 SURFACE DECOMPRESSION USING OXYGEN WITH NITROX OR AIR IN WATER STOPS
BOTTOM
TIME
(MINS)
40
70
85
100
115
130
150
TIME
TO 1 ST
STOP
2:00
2:00
2:00
2:00
2:00
2:00
2:00
80
IN WATER Stops (mins) at Depths (feet)
Breathing Nitrox or Air
70 60 50 40 30
3
3
3
SURFACE
INTERVAL
*
NOT TO
EXCEED 5
MINUTES
IN CHAMBER
ON OXYGEN
50
10
10
40
14
20
3
3
10
10
26
31
SUPERIOR DIVING OPERATIONAL DEPTH/TIME LIMIT
3 10 37
3 10 44
NO OF
AIR
BREAKS
1
2
2
2
2
3
ASCENT DECOMP
TIME
(MINS)
10
MINUTES
O2
**
6:00
50:00
61:00
67:00
72:00
78:00
90:00
REPET
GROUP
*
M
N
O
Z
DIVE PROCEDURES – TABLE 1-26 Surface Decompression Using Oxygen with Nitrox or Air in Water Stops
IN WATER PHASE
* Ascent procedures
 25 feet per minute to the first stop

Ascent time between stops & from 30 feet to surface is ONE MINUTE

Decompression time as specified begins on arrival at the stop depth

Do not include ascent time as part of stop times

Delays at earlier stops are not to be compensated for at later stops
*50/50 Nitrox Switch
 Switch to 50/50 Nitrox at 100 feet during ascent
 Nitrox decompression mix is not to be connected to the manifold until the diver passes 100 feet

On surface divers umbilical is to be flushed thoroughly with air prior to starting next dive

Umbilical flush is to be formally logged
CHAMBER PHASE

Diver is recompressed to 50 feet in 30 seconds and is to be breathing oxygen within 3 minutes of arriving at 50 feet

Remain at 50 feet for 10 minutes then ascend to 40 feet in 1 minute

On arrival at 40 feet the first air break is given prior to starting Oxygen time at this depth

Breath Oxygen for the time listed broken into cycles of 20 minutes interspersed with 5 minute air breaks
ASCENT FROM 40 FEET
 ** On completion of total Oxygen time at 40 feet surface the diver at the rate 4 feet per minute (10 minutes)

Diver to breath Oxygen during the entire ascent.
LOSS OF NITROX
 If there is a loss of Nitrox, switch diver to Air and decompress according to table * REPETITIVE DIVES – Are only permitted after a minimum surface interval of 6 hours
 Previous bottom time must have been such that divers repet group was no greater than ‘O’

Refer to table 1-10 for Repetitive Group Designator (RGD) not to exceed ‘O’

Refer to Table 1-12 for new RGD at the end of the surface interval

Using new RGD refer to Table 1-13 for Residual Nitrogen Time (RNT)
* Surface Interval
80 FEET
 Upon surfacing the diver has 3 and a half minutes maximum to start recompression in the chamber
NOTE: On any occasion that the Depth or Bottom Time falls within 2 feet or 2 minutes of a Depth or Time increment of a schedule use the next Deeper and/or next longer schedule.

Document Title
Document No.
Revision Date
Table 1-26 and 1-26x Surface Decompression Using Oxygen
SDC-HSE-JWL-T126126xSDUO-0010-001
March 16, 2004 Revision No. 1 Page 3 of 16
Table 1-26 SURFACE DECOMPRESSION USING OXYGEN WITH NITROX OR AIR IN WATER STOPS
BOTTOM
TIME
(MINS)
32
60
70
80
90
100
110
120
130
TIME
TO 1 ST
STOP
2:24
2:24
2:24
2:24
2:24
2:24
2:24
2:24
2:24
80
IN WATER Stops (mins) at Depths (feet)
Breathing Nitrox or Air
70 60 50 40 30
3
3
3
3
3
SURFACE
INTERVAL
*
NOT TO
EXCEED 5
MINUTES
IN CHAMBER
ON OXYGEN
50
10
10
10
10
40
14
20
25
30
3 10 34
SUPERIOR DIVING OPERATIONAL DEPTH/TIME LIMIT
3
3
3
10
10
10
39
43
48
NO OF
AIR
BREAKS
2
2
2
1
2
2
3
3
ASCENT DECOMP
TIME
(MINS)
10
MINUTES
O2
**
6:24
50:24
61:24
66:24
71:24
75:24
80:24
89:24
94:24
REPET
GROUP
J
M
N
N
O
Z
DIVE PROCEDURES – TABLE 1-26 Surface Decompression Using Oxygen with Nitrox or Air in Water Stops
IN WATER PHASE
* Ascent procedures

25 feet per minute to the first stop
 Ascent time between stops & from 30 feet to surface is ONE MINUTE
 Decompression time as specified begins on arrival at the stop depth

Do not include ascent time as part of stop times
 Delays at earlier stops are not to be compensated for at later stops
*50/50 Nitrox Switch

Switch to 50/50 Nitrox at 100 feet during ascent

Nitrox decompression mix is not to be connected to the manifold until the diver passes 100 feet

On surface divers umbilical is to be flushed thoroughly with air prior to starting next dive

Umbilical flush is to be formally logged
CHAMBER PHASE

Diver is recompressed to 50 feet in 30 seconds and is to be breathing oxygen within 3 minutes of arriving at 50 feet
 Remain at 50 feet for 10 minutes then ascend to 40 feet in 1 minute
 On arrival at 40 feet the first air break is given prior to starting Oxygen time at this depth

Breath Oxygen for the time listed broken into cycles of 20 minutes interspersed with 5 minute air breaks
ASCENT FROM 40 FEET

** On completion of total Oxygen time at 40 feet surface the diver at the rate 4 feet per minute (10 minutes)

Diver to breath Oxygen during the entire ascent.
LOSS OF NITROX

If there is a loss of Nitrox, switch diver to Air and decompress according to table * REPETITIVE DIVES – Are only permitted after a minimum surface interval of 6 hours
 Previous bottom time must have been such that divers repet group was no greater than ‘O’

Refer to table 1-10 for Repetitive Group Designator (RGD) not to exceed ‘O’
 Refer to Table 1-12 for new RGD at the end of the surface interval
 Using new RGD refer to Table 1-13 for Residual Nitrogen Time (RNT)
* Surface Interval
90 FEET

Upon surfacing the diver has 3 and a half minutes maximum to start recompression in the chamber
NOTE: On any occasion that the Depth or Bottom Time falls within 2 feet or 2 minutes of a Depth or Time increment of a schedule use the next Deeper and/or next longer schedule.

Document Title
Document No.
Revision Date
Table 1-26 and 1-26x Surface Decompression Using Oxygen
SDC-HSE-JWL-T126126xSDUO-0010-001
March 16, 2004 Revision No. 1 Page 4 of 16
Table 1-26 SURFACE DECOMPRESSION USING OXYGEN WITH NITROX OR AIR IN WATER STOPS
BOTTOM
TIME
(MINS)
26
50
60
70
80
90
100
110
120
TIME
TO 1 ST
STOP
2:48
2:48
2:48
2:48
2:48
2:48
2:48
2:48
2:24
80
IN WATER Stops (mins) at Depths (feet)
Breathing Nitrox or Air
70 60 50 40 30
3
3
3
3
3
SURFACE
INTERVAL
*
NOT TO
EXCEED 5
MINUTES
IN CHAMBER
ON OXYGEN
50
10
10
10
10
40
14
20
26
32
3 10 38
SUPERIOR DIVING OPERATIONAL DEPTH/TIME LIMIT
2
3
3
4
10
10
10
44
49
53
NO OF
AIR
BREAKS
2
2
2
1
2
3
3
3
ASCENT DECOMP
TIME
(MINS)
10
MINUTES
O2
**
6:48
50:48
61:48
67:48
73:48
79:48
90:48
95:48
103:24
REPET
GROUP
I
L
N
O
O
Z
DIVE PROCEDURES – TABLE 1-26 Surface Decompression Using Oxygen with Nitrox or Air in Water Stops
IN WATER PHASE
* Ascent procedures

25 feet per minute to the first stop
 Ascent time between stops & from 30 feet to surface is ONE MINUTE
 Decompression time as specified begins on arrival at the stop depth

Do not include ascent time as part of stop times
 Delays at earlier stops are not to be compensated for at later stops
*50/50 Nitrox Switch

Switch to 50/50 Nitrox at 100 feet during ascent

Nitrox decompression mix is not to be connected to the manifold until the diver passes 100 feet

On surface divers umbilical is to be flushed thoroughly with air prior to starting next dive

Umbilical flush is to be formally logged
CHAMBER PHASE

Diver is recompressed to 50 feet in 30 seconds and is to be breathing oxygen within 3 minutes of arriving at 50 feet
 Remain at 50 feet for 10 minutes then ascend to 40 feet in 1 minute
 On arrival at 40 feet the first air break is given prior to starting Oxygen time at this depth

Breath Oxygen for the time listed broken into cycles of 20 minutes interspersed with 5 minute air breaks
ASCENT FROM 40 FEET

** On completion of total Oxygen time at 40 feet surface the diver at the rate 4 feet per minute (10 minutes)

Diver to breath Oxygen during the entire ascent.
LOSS OF NITROX

If there is a loss of Nitrox, switch diver to Air and decompress according to table * REPETITIVE DIVES – Are only permitted after a minimum surface interval of 6 hours
 Previous bottom time must have been such that divers repet group was no greater than ‘O’

Refer to table 1-10 for Repetitive Group Designator (RGD) not to exceed ‘O’
 Refer to Table 1-12 for new RGD at the end of the surface interval
 Using new RGD refer to Table 1-13 for Residual Nitrogen Time (RNT)
* Surface Interval
100 FEET

Upon surfacing the diver has 3 and a half minutes maximum to start recompression in the chamber
NOTE: On any occasion that the Depth or Bottom Time falls within 2 feet or 2 minutes of a Depth or Time increment of a schedule use the next Deeper and/or next longer schedule.

Document Title
Document No.
Revision Date
Table 1-26 and 1-26x Surface Decompression Using Oxygen
SDC-HSE-JWL-T126126xSDUO-0010-001
March 16, 2004 Revision No. 1 Page 5 of 16
Table 1-26 SURFACE DECOMPRESSION USING OXYGEN WITH NITROX OR AIR IN WATER STOPS
BOTTOM
TIME
(MINS)
22
40
50
60
70
80
90
100
110
TIME
TO 1 ST
STOP
3:12
3:12
3:12
3:12
3:12
2:48
2:48
2:48
2:48
80
IN WATER Stops (mins) at Depths (feet)
Breathing Nitrox or Air
70 60 50 40 30
3
3
3
3
3
SURFACE
INTERVAL
*
NOT TO
EXCEED 5
MINUTES
IN CHAMBER
ON OXYGEN
50
10
10
10
10
40
12
19
26
33
2 3 10 40
SUPERIOR DIVING OPERATIONAL DEPTH/TIME LIMIT
2
2
2
4
5
12
10
10
10
46
51
54
NO OF
AIR
BREAKS
2
2
3
1
1
3
3
3
ASCENT DECOMP
TIME
(MINS)
10
MINUTES
O2
**
7:12
49:12
56:12
68:12
75:12
89:48
96:48
102:48
112:48
REPET
GROUP
H
L
M
N
O
Z
DIVE PROCEDURES – TABLE 1-26 Surface Decompression Using Oxygen with Nitrox or Air in Water Stops
IN WATER PHASE
* Ascent procedures

25 feet per minute to the first stop
 Ascent time between stops & from 30 feet to surface is ONE MINUTE
 Decompression time as specified begins on arrival at the stop depth

Do not include ascent time as part of stop times
 Delays at earlier stops are not to be compensated for at later stops
*50/50 Nitrox Switch

Switch to 50/50 Nitrox at 100 feet during ascent

Nitrox decompression mix is not to be connected to the manifold until the diver passes 100 feet

On surface divers umbilical is to be flushed thoroughly with air prior to starting next dive

Umbilical flush is to be formally logged
CHAMBER PHASE

Diver is recompressed to 50 feet in 30 seconds and is to be breathing oxygen within 3 minutes of arriving at 50 feet
 Remain at 50 feet for 10 minutes then ascend to 40 feet in 1 minute
 On arrival at 40 feet the first air break is given prior to starting Oxygen time at this depth

Breath Oxygen for the time listed broken into cycles of 20 minutes interspersed with 5 minute air breaks
ASCENT FROM 40 FEET

** On completion of total Oxygen time at 40 feet surface the diver at the rate 4 feet per minute (10 minutes)

Diver to breath Oxygen during the entire ascent.
LOSS OF NITROX

If there is a loss of Nitrox, switch diver to Air and decompress according to table * REPETITIVE DIVES – Are only permitted after a minimum surface interval of 6 hours

Previous bottom time must have been such that divers repet group was no greater than ‘O’

Refer to table 1-10 for Repetitive Group Designator (RGD) not to exceed ‘O’
 Refer to Table 1-12 for new RGD at the end of the surface interval
 Using new RGD refer to Table 1-13 for Residual Nitrogen Time (RNT)
* Surface Interval
110 FEET

Upon surfacing the diver has 3 and a half minutes maximum to start recompression in the chamber
NOTE: On any occasion that the Depth or Bottom Time falls within 2 feet or 2 minutes of a Depth or Time increment of a schedule use the next Deeper and/or next longer schedule.

Document Title
Document No.
Revision Date
Table 1-26 and 1-26x Surface Decompression Using Oxygen
SDC-HSE-JWL-T126126xSDUO-0010-001
March 16, 2004 Revision No. 1 Page 6 of 16
Table 1-26 SURFACE DECOMPRESSION USING OXYGEN WITH NITROX OR AIR IN WATER STOPS
BOTTOM
TIME
(MINS)
18
30
40
50
60
70
80
90
TIME
TO 1 ST
STOP
3:36
3:36
3:36
3:36
3:12
3:12
3:12
3:12
80
IN WATER Stops (mins) at Depths (feet)
Breathing Nitrox or Air
70 60 50 40 30
3
3
3
SURFACE
INTERVAL
*
IN CHAMBER
ON OXYGEN
50 40
2
2
2
3
3
4
5
NOT TO
EXCEED 5
MINUTES
10
10
10
10
10
10
9
16
24
32
39
46
SUPERIOR DIVING OPERATIONAL DEPTH/TIME LIMIT
4 8 10 51
NO OF
AIR
BREAKS
2
2
2
3
1
1
3
ASCENT DECOMP
TIME
(MINS)
10
MINUTES
O2
**
7:36
46:36
53:36
66:36
77:12
85:12
98:12
108:12
REPET
GROUP
H
J
L
N
O
O
Z
DIVE PROCEDURES – TABLE 1-26 Surface Decompression Using Oxygen with Nitrox or Air in Water Stops
IN WATER PHASE
* Ascent procedures
 25 feet per minute to the first stop
 Ascent time between stops & from 30 feet to surface is ONE MINUTE

Decompression time as specified begins on arrival at the stop depth

Do not include ascent time as part of stop times

Delays at earlier stops are not to be compensated for at later stops
CHAMBER PHASE
 Diver is recompressed to 50 feet in 30 seconds and is to be breathing oxygen within 3 minutes of arriving at 50 feet
 Remain at 50 feet for 10 minutes then ascend to 40 feet in 1 minute

On arrival at 40 feet the first air break is given prior to starting Oxygen time at this depth

Breath Oxygen for the time listed broken into cycles of 20 minutes interspersed with 5 minute air breaks
*50/50 Nitrox Switch

Switch to 50/50 Nitrox at 100 feet during ascent

Nitrox decompression mix is not to be connected to the manifold until the diver passes 100 feet
 On surface divers umbilical is to be flushed thoroughly with air prior to starting next dive
 Umbilical flush is to be formally logged
ASCENT FROM 40 FEET

** On completion of total Oxygen time at 40 feet surface the diver at the rate 4 feet per minute (10 minutes)
 Diver to breath Oxygen during the entire ascent.
LOSS OF NITROX
 If there is a loss of Nitrox, switch diver to Air and decompress according to table * REPETITIVE DIVES – Are only permitted after a minimum surface interval of 6 hours

Previous bottom time must have been such that divers repet group was no greater than ‘O’
 Refer to table 1-10 for Repetitive Group Designator (RGD) not to exceed ‘O’

Refer to Table 1-12 for new RGD at the end of the surface interval
 Using new RGD refer to Table 1-13 for Residual Nitrogen Time (RNT)
* Surface Interval
120 FEET

Upon surfacing the diver has 3 and a half minutes maximum to start recompression in the chamber
NOTE: On any occasion that the Depth or Bottom Time falls within 2 feet or 2 minutes of a Depth or Time increment of a schedule use the next Deeper and/or next longer schedule.

Document Title
Document No.
Revision Date
Table 1-26 and 1-26x Surface Decompression Using Oxygen
SDC-HSE-JWL-T126126xSDUO-0010-001
March 16, 2004 Revision No. 1 Page 7 of 16
Table 1-26 SURFACE DECOMPRESSION USING OXYGEN WITH NITROX OR AIR IN WATER STOPS
BOTTOM
TIME
(MINS)
15
30
40
50
60
70
80
90
TIME
TO 1 ST
STOP
4:00
4:00
4:00
3:36
3:36
3:36
3:36
3:36
80
IN WATER Stops (mins) at Depths (feet)
Breathing Nitrox or Air
70 60 50 40 30
3
3
3
SURFACE
INTERVAL
*
NOT TO
EXCEED 5
MINUTES
IN CHAMBER
ON OXYGEN
50
10
10
40
12
21
2
2
3
5
10
10
29
37
SUPERIOR DIVING OPERATIONAL DEPTH/TIME LIMIT
2 7 10 45
6
10
10
14
10
10
51
56
NO OF
AIR
BREAKS
1
2
2
2
3
3
3
ASCENT DECOMP
TIME
(MINS)
10
MINUTES
O2
**
8:00
50:00
64:00
74:36
84:36
99:36
112:36
125:36
REPET
GROUP
F
M
N
O
Z
DIVE PROCEDURES – TABLE 1-26 Surface Decompression Using Oxygen with Nitrox or Air in Water Stops
IN WATER PHASE
* Ascent procedures
 25 feet per minute to the first stop
 Ascent time between stops & from 30 feet to surface is ONE MINUTE

Decompression time as specified begins on arrival at the stop depth

Do not include ascent time as part of stop times

Delays at earlier stops are not to be compensated for at later stops
CHAMBER PHASE
 Diver is recompressed to 50 feet in 30 seconds and is to be breathing oxygen within 3 minutes of arriving at 50 feet
 Remain at 50 feet for 10 minutes then ascend to 40 feet in 1 minute

On arrival at 40 feet the first air break is given prior to starting Oxygen time at this depth

Breath Oxygen for the time listed broken into cycles of 20 minutes interspersed with 5 minute air breaks
*50/50 Nitrox Switch

Switch to 50/50 Nitrox at 100 feet during ascent

Nitrox decompression mix is not to be connected to the manifold until the diver passes 100 feet
 On surface divers umbilical is to be flushed thoroughly with air prior to starting next dive
 Umbilical flush is to be formally logged
ASCENT FROM 40 FEET

** On completion of total Oxygen time at 40 feet surface the diver at the rate 4 feet per minute (10 minutes)
 Diver to breath Oxygen during the entire ascent.
LOSS OF NITROX
 If there is a loss of Nitrox, switch diver to Air and decompress according to table * REPETITIVE DIVES – Are only permitted after a minimum surface interval of 6 hours

Previous bottom time must have been such that divers repet group was no greater than ‘O’
 Refer to table 1-10 for Repetitive Group Designator (RGD) not to exceed ‘O’

Refer to Table 1-12 for new RGD at the end of the surface interval
 Using new RGD refer to Table 1-13 for Residual Nitrogen Time (RNT)
* Surface Interval
130 FEET

Upon surfacing the diver has 3 and a half minutes maximum to start recompression in the chamber
NOTE: On any occasion that the Depth or Bottom Time falls within 2 feet or 2 minutes of a Depth or Time increment of a schedule use the next Deeper and/or next longer schedule.

Document Title
Document No.
Revision Date
Table 1-26 and 1-26x Surface Decompression Using Oxygen
SDC-HSE-JWL-T126126xSDUO-0010-001
March 16, 2004 Revision No. 1 Page 8 of 16
Table 1-26 SURFACE DECOMPRESSION USING OXYGEN WITH NITROX OR AIR IN WATER STOPS
BOTTOM
TIME
(MINS)
13
25
30
35
40
45
50
55
60
65
70
TIME
TO 1 ST
STOP
4:24
4:24
4:24
4:24
4:00
4:00
4:00
4:00
4:00
4:00
3:36
80
IN WATER Stops (mins) at Depths (feet)
Breathing Nitrox or Air
70 60 50 40 30
3
3
3
SURFACE
INTERVAL
*
IN CHAMBER
ON OXYGEN
50 40
2
2
2
3
3
4
6
NOT TO
EXCEED 5
MINUTES
10
10
10
10
10
10
2
2
7
9
10
10
38
43
SUPERIOR DIVING OPERATIONAL DEPTH/TIME LIMIT
2
4
7
11
13
10
10
48
51
11
15
20
24
29
33
NO OF
AIR
BREAKS
2
2
2
2
1
1
2
3
3
3
ASCENT DECOMP
TIME
(MINS)
10
MINUTES
O2
**
8:24
49:24
53:24
63:24
70:00
76:00
82:00
88:00
100:00
109:00
119:36
REPET
GROUP
DIVE PROCEDURES – TABLE 1-26 Surface Decompression Using Oxygen with Nitrox or Air in Water Stops
IN WATER PHASE
* Ascent procedures
 25 feet per minute to the first stop
 Ascent time between stops & from 30 feet to surface is ONE MINUTE

Decompression time as specified begins on arrival at the stop depth

Do not include ascent time as part of stop times

Delays at earlier stops are not to be compensated for at later stops
CHAMBER PHASE
 Diver is recompressed to 50 feet in 30 seconds and is to be breathing oxygen within 3 minutes of arriving at 50 feet
 Remain at 50 feet for 10 minutes then ascend to 40 feet in 1 minute

On arrival at 40 feet the first air break is given prior to starting Oxygen time at this depth

Breath Oxygen for the time listed broken into cycles of 20 minutes interspersed with 5 minute air breaks
*50/50 Nitrox Switch

Switch to 50/50 Nitrox at 100 feet during ascent
 Nitrox decompression mix is not to be connected to the manifold until the diver passes 100 feet
 On surface divers umbilical is to be flushed thoroughly with air prior to starting next dive
 Umbilical flush is to be formally logged
ASCENT FROM 40 FEET

** On completion of total Oxygen time at 40 feet surface the diver at the rate 4 feet per minute (10 minutes)
 Diver to breath Oxygen during the entire ascent.
LOSS OF NITROX

If there is a loss of Nitrox, switch diver to Air and decompress according to table * REPETITIVE DIVES – Are only permitted after a minimum surface interval of 6 hours
 Previous bottom time must have been such that divers repet group was no greater than ‘O’
 Refer to table 1-10 for Repetitive Group Designator (RGD) not to exceed ‘O’
 Refer to Table 1-12 for new RGD at the end of the surface interval
 Using new RGD refer to Table 1-13 for Residual Nitrogen Time (RNT)
* Surface Interval
140 FEET

Upon surfacing the diver has 3 and a half minutes maximum to start recompression in the chamber
NOTE: On any occasion that the Depth or Bottom Time falls within 2 feet or 2 minutes of a Depth or Time increment of a schedule use the next Deeper and/or next longer schedule.
G
J
K
N
N
O
O
Z
Z

Document Title
Document No.
Revision Date
Table 1-26 and 1-26x Surface Decompression Using Oxygen
SDC-HSE-JWL-T126126xSDUO-0010-001
March 16, 2004 Revision No. 1 Page 9 of 16
Table 1-26 SURFACE DECOMPRESSION USING OXYGEN WITH NITROX OR AIR IN WATER STOPS
BOTTOM
TIME
(MINS)
11
25
30
35
40
45
50
55
TIME
TO 1 ST
STOP
4:48
4:48
4:48
4:24
4:24
4:24
4:00
3:36
80
IN WATER Stops (mins) at Depths (feet)
Breathing Nitrox or Air
70 60 50 40
2
2
5
2
5
6
7
9
4
7
9
11
14
30
3
3
3
SURFACE
INTERVAL
*
NOT TO
EXCEED 5
MINUTES
IN CHAMBER
ON OXYGEN
50 40
10
10
10
10
10
10
10
13
18
23
27
33
38
44
NO OF
AIR
BREAKS
2
2
2
2
1
1
3
ASCENT DECOMP
TIME
(MINS)
10
MINUTES
O2
**
8:48
51:48
56:48
70:24
80:24
89:24
100:00
121:36
REPET
GROUP
G
K
L
N
N
O
O
Z
DIVE PROCEDURES – TABLE 1-26 Surface Decompression Using Oxygen with Nitrox or Air in Water Stops
IN WATER PHASE
* Ascent procedures
 25 feet per minute to the first stop

Ascent time between stops & from 30 feet to surface is ONE MINUTE

Decompression time as specified begins on arrival at the stop depth

Do not include ascent time as part of stop times

Delays at earlier stops are not to be compensated for at later stops
*50/50 Nitrox Switch
 Switch to 50/50 Nitrox at 100 feet during ascent
 Nitrox decompression mix is not to be connected to the manifold until the diver passes 100 feet

On surface divers umbilical is to be flushed thoroughly with air prior to starting next dive

Umbilical flush is to be formally logged
CHAMBER PHASE

Diver is recompressed to 50 feet in 30 seconds and is to be breathing oxygen within 3 minutes of arriving at 50 feet

Remain at 50 feet for 10 minutes then ascend to 40 feet in 1 minute

On arrival at 40 feet the first air break is given prior to starting Oxygen time at this depth

Breath Oxygen for the time listed broken into cycles of 20 minutes interspersed with 5 minute air breaks
ASCENT FROM 40 FEET
 ** On completion of total Oxygen time at 40 feet surface the diver at the rate 4 feet per minute (10 minutes)

Diver to breath Oxygen during the entire ascent.
LOSS OF NITROX
 If there is a loss of Nitrox, switch diver to Air and decompress according to table * REPETITIVE DIVES – Are only permitted after a minimum surface interval of 6 hours
 Previous bottom time must have been such that divers repet group was no greater than ‘O’

Refer to table 1-10 for Repetitive Group Designator (RGD) not to exceed ‘O’

Refer to Table 1-12 for new RGD at the end of the surface interval

Using new RGD refer to Table 1-13 for Residual Nitrogen Time (RNT)
* Surface Interval
150 FEET
 Upon surfacing the diver has 3 and a half minutes maximum to start recompression in the chamber
NOTE: On any occasion that the Depth or Bottom Time falls within 2 feet or 2 minutes of a Depth or Time increment of a schedule use the next Deeper and/or next longer schedule.

Document Title
Document No.
Revision Date
Table 1-26 and 1-26x Surface Decompression Using Oxygen
SDC-HSE-JWL-T126126xSDUO-0010-001
March 16, 2004 Revision No. 1 Page 10 of 16
Table 1-26 SURFACE DECOMPRESSION USING OXYGEN WITH NITROX OR AIR IN WATER STOPS
BOTTOM
TIME
(MINS)
9
20
25
30
35
40
45
TIME
TO 1 ST
STOP
5:12
5:12
5:12
4:48
4:48
4:24
4:00
80
IN WATER Stops (mins) at Depths (feet)
Breathing Nitrox or Air
70 60 50 40
3
3
4
2
4
6
8
30
3
3
3
4
7
9
12
SURFACE
INTERVAL
*
NOT TO
EXCEED 5
MINUTES
IN CHAMBER
ON OXYGEN
50 40
10
10
10
10
10
10
11
16
21
26
32
38
NO OF
AIR
BREAKS
2
2
2
2
1
1
ASCENT DECOMP
TIME
(MINS)
10
MINUTES
O2
**
9:12
50:12
55:12
68:48
78:48
92:24
108:00
REPET
GROUP
F
J
K
M
N
N
Z
DIVE PROCEDURES – TABLE 1-26 Surface Decompression Using Oxygen with Nitrox or Air in Water Stops
IN WATER PHASE
* Ascent procedures

25 feet per minute to the first stop

Ascent time between stops & from 30 feet to surface is ONE MINUTE
 Decompression time as specified begins on arrival at the stop depth
 Do not include ascent time as part of stop times
 Delays at earlier stops are not to be compensated for at later stops
*50/50 Nitrox Switch

Switch to 50/50 Nitrox at 100 feet during ascent

Nitrox decompression mix is not to be connected to the manifold until the diver passes 100 feet

On surface divers umbilical is to be flushed thoroughly with air prior to starting next dive

Umbilical flush is to be formally logged
CHAMBER PHASE

Diver is recompressed to 50 feet in 30 seconds and is to be breathing oxygen within 3 minutes of arriving at 50 feet

Remain at 50 feet for 10 minutes then ascend to 40 feet in 1 minute
 On arrival at 40 feet the first air break is given prior to starting Oxygen time at this depth
 Breath Oxygen for the time listed broken into cycles of 20 minutes interspersed with 5 minute air breaks
ASCENT FROM 40 FEET

** On completion of total Oxygen time at 40 feet surface the diver at the rate 4 feet per minute (10 minutes)

Diver to breath Oxygen during the entire ascent.
LOSS OF NITROX

If there is a loss of Nitrox, switch diver to Air and decompress according to table * REPETITIVE DIVES – Are only permitted after a minimum surface interval of 6 hours
 Previous bottom time must have been such that divers repet group was no greater than ‘O’

Refer to table 1-10 for Repetitive Group Designator (RGD) not to exceed ‘O’

Refer to Table 1-12 for new RGD at the end of the surface interval

Using new RGD refer to Table 1-13 for Residual Nitrogen Time (RNT)
* Surface Interval
160 FEET
 Upon surfacing the diver has 3 and a half minutes maximum to start recompression in the chamber
NOTE: On any occasion that the Depth or Bottom Time falls within 2 feet or 2 minutes of a Depth or Time increment of a schedule use the next Deeper and/or next longer schedule.

Document Title
Document No.
Revision Date
Table 1-26 and 1-26x Surface Decompression Using Oxygen
SDC-HSE-JWL-T126126xSDUO-0010-001
March 16, 2004 Revision No. 1 Page 11 of 16
Table 1-26 SURFACE DECOMPRESSION USING OXYGEN WITH NITROX OR AIR IN WATER STOPS
BOTTOM
TIME
(MINS)
7
20
25
30
35
40
TIME
TO 1 ST
STOP
5:36
5:36
5:36
5:12
4:48
4:24
80
IN WATER Stops (mins) at Depths (feet)
Breathing Nitrox or Air
70 60 50 40
4
4
4
5
6
8
30
3
3
3
7
9
13
SURFACE
INTERVAL
*
NOT TO
EXCEED 5
MINUTES
IN CHAMBER
ON OXYGEN
50 40
10
10
10
10
10
13
19
23
29
36
NO OF
AIR
BREAKS
2
2
2
1
1
ASCENT DECOMP
TIME
(MINS)
10
MINUTES
O2
**
9:36
52:36
58:36
77:12
90:48
108:24
REPET
GROUP
F
J
L
M
O
O
DIVE PROCEDURES – TABLE 1-26 Surface Decompression Using Oxygen with Nitrox or Air in Water Stops
IN WATER PHASE
* Ascent procedures

25 feet per minute to the first stop
 Ascent time between stops & from 30 feet to surface is ONE MINUTE

Decompression time as specified begins on arrival at the stop depth

Do not include ascent time as part of stop times

Delays at earlier stops are not to be compensated for at later stops
*50/50 Nitrox Switch

Switch to 50/50 Nitrox at 100 feet during ascent

Nitrox decompression mix is not to be connected to the manifold until the diver passes 100 feet
 On surface divers umbilical is to be flushed thoroughly with air prior to starting next dive
 Umbilical flush is to be formally logged
CHAMBER PHASE

Diver is recompressed to 50 feet in 30 seconds and is to be breathing oxygen within 3 minutes of arriving at 50 feet
 Remain at 50 feet for 10 minutes then ascend to 40 feet in 1 minute

On arrival at 40 feet the first air break is given prior to starting Oxygen time at this depth

Breath Oxygen for the time listed broken into cycles of 20 minutes interspersed with 5 minute air breaks
ASCENT FROM 40 FEET

** On completion of total Oxygen time at 40 feet surface the diver at the rate 4 feet per minute (10 minutes)
 Diver to breath Oxygen during the entire ascent.
LOSS OF NITROX

If there is a loss of Nitrox, switch diver to Air and decompress according to table * REPETITIVE DIVES – Are only permitted after a minimum surface interval of 6 hours

Previous bottom time must have been such that divers repet group was no greater than ‘O’

Refer to table 1-10 for Repetitive Group Designator (RGD) not to exceed ‘O’
 Refer to Table 1-12 for new RGD at the end of the surface interval
 Using new RGD refer to Table 1-13 for Residual Nitrogen Time (RNT)
170 FEET
* Surface Interval

Upon surfacing the diver has 3 and a half minutes maximum to start recompression in the chamber
NOTE: On any occasion that the Depth or Bottom Time falls within 2 feet or 2 minutes of a Depth or Time increment of a schedule use the next Deeper and/or next longer schedule.

Document Title
Document No.
Revision Date
Table 1-26 and 1-26x Surface Decompression Using Oxygen
SDC-HSE-JWL-T126126xSDUO-0010-001
March 16, 2004 Revision No. 1 Page 12 of 16
Table 1-26x SURFACE DECOMPRESSION USING OXYGEN WITH NITROX OR AIR IN WATER STOPS
BOTTOM
TIME
(MINS)
15
TIME
TO 1 ST
STOP
5:36
80
IN WATER Stops (mins) at Depths (feet)
Breathing Nitrox or Air
70 60 50 40
4
30
6
SURFACE
INTERVAL
*
NOT TO
EXCEED 5
MINUTES
IN CHAMBER
ON OXYGEN
50 40
10 20
30 4:48 2 3 5 10 10 40
45 4:00 2 4
SUPERIOR DIVING OPERATIONAL DEPTH/TIME LIMIT
6 12 18 10 50
NOTE: NO REPETITIVE DIVES ALLOWED ON THESE TABLES
NO OF
AIR
BREAKS
1
2
2
ASCENT DECOMP
TIME
(MINS)
10
MINUTES
O2
**
59:36
88:48
120:00
REPET
GROUP
NO
REPET
DIVES
DIVE PROCEDURES – TABLE 1-26 Surface Decompression Using Oxygen with Nitrox or Air in Water Stops
IN WATER PHASE
* Ascent procedures

25 feet per minute to the first stop
 Ascent time between stops & from 30 feet to surface is ONE MINUTE
 Decompression time as specified begins on arrival at the stop depth

Do not include ascent time as part of stop times

Delays at earlier stops are not to be compensated for at later stops
CHAMBER PHASE

Diver is recompressed to 50 feet in 30 seconds and is to be breathing oxygen within 3 minutes of arriving at 50 feet
 Remain at 50 feet for 10 minutes then ascend to 40 feet in 1 minute
 On arrival at 40 feet the first air break is given prior to starting Oxygen time at this depth

Breath Oxygen for the time listed broken into cycles of 20 minutes interspersed with 5 minute air breaks
*50/50 Nitrox Switch

Switch to 50/50 Nitrox at 100 feet during ascent

Nitrox decompression mix is not to be connected to the manifold until the diver passes 100 feet
 On surface divers umbilical is to be flushed thoroughly with air prior to starting next dive

Umbilical flush is to be formally logged
ASCENT FROM 40 FEET

** On completion of total Oxygen time at 40 feet surface the diver at the rate 4 feet per minute (10 minutes)
 Diver to breath Oxygen during the entire ascent.
LOSS OF NITROX

If there is a loss of Nitrox, switch diver to Air and decompress according to table * REPETITIVE DIVES – Are only permitted after a minimum surface interval of 6 hours
 Previous bottom time must have been such that divers repet group was no greater than ‘O’

Refer to table 1-10 for Repetitive Group Designator (RGD) not to exceed ‘O’
 Refer to Table 1-12 for new RGD at the end of the surface interval
 Using new RGD refer to Table 1-13 for Residual Nitrogen Time (RNT)
180 FEET
* Surface Interval

Upon surfacing the diver has 3 and a half minutes maximum to start recompression in the chamber
NOTE: On any occasion that the Depth or Bottom Time falls within 2 feet or 2 minutes of a Depth or Time increment of a schedule use the next Deeper and/or next longer schedule.

Document Title
Document No.
Revision Date
Table 1-26 and 1-26x Surface Decompression Using Oxygen
SDC-HSE-JWL-T126126xSDUO-0010-001
March 16, 2004 Revision No. 1 Page 13 of 16
Table 1-26x SURFACE DECOMPRESSION USING OXYGEN WITH NITROX OR AIR IN WATER STOPS
BOTTOM
TIME
(MINS)
15
TIME
TO 1 ST
STOP
5:36
80
IN WATER Stops (mins) at Depths (feet)
Breathing Nitrox or Air
70 60 50 40
2 4
30
6
SURFACE
INTERVAL
*
NOT TO
EXCEED 5
MINUTES
IN CHAMBER
ON OXYGEN
50 40
10 20
30 5:12 3 5 8 12 10 50
45 4:24 2 5
SUPERIOR DIVING OPERATIONAL DEPTH/TIME LIMIT
10 18 26 10 50
NOTE: NO REPETITIVE DIVES ALLOWED ON THESE TABLES
NO OF
AIR
BREAKS
1
2
2
ASCENT DECOMP
TIME
(MINS)
10
MINUTES
O2
**
61:36
103:12
145:24
REPET
GROUP
NO
REPET
DIVES
DIVE PROCEDURES – TABLE 1-26 Surface Decompression Using Oxygen with Nitrox or Air in Water Stops
IN WATER PHASE
* Ascent procedures

25 feet per minute to the first stop
 Ascent time between stops & from 30 feet to surface is ONE MINUTE
 Decompression time as specified begins on arrival at the stop depth

Do not include ascent time as part of stop times

Delays at earlier stops are not to be compensated for at later stops
CHAMBER PHASE

Diver is recompressed to 50 feet in 30 seconds and is to be breathing oxygen within 3 minutes of arriving at 50 feet
 Remain at 50 feet for 10 minutes then ascend to 40 feet in 1 minute
 On arrival at 40 feet the first air break is given prior to starting Oxygen time at this depth

Breath Oxygen for the time listed broken into cycles of 20 minutes interspersed with 5 minute air breaks
*50/50 Nitrox Switch

Switch to 50/50 Nitrox at 100 feet during ascent

Nitrox decompression mix is not to be connected to the manifold until the diver passes 100 feet
 On surface divers umbilical is to be flushed thoroughly with air prior to starting next dive

Umbilical flush is to be formally logged
ASCENT FROM 40 FEET

** On completion of total Oxygen time at 40 feet surface the diver at the rate 4 feet per minute (10 minutes)
 Diver to breath Oxygen during the entire ascent.
LOSS OF NITROX

If there is a loss of Nitrox, switch diver to Air and decompress according to table * REPETITIVE DIVES – Are only permitted after a minimum surface interval of 6 hours
 Previous bottom time must have been such that divers repet group was no greater than ‘O’

Refer to table 1-10 for Repetitive Group Designator (RGD) not to exceed ‘O’
 Refer to Table 1-12 for new RGD at the end of the surface interval
 Using new RGD refer to Table 1-13 for Residual Nitrogen Time (RNT)
190 FEET
* Surface Interval

Upon surfacing the diver has 3 and a half minutes maximum to start recompression in the chamber
NOTE: On any occasion that the Depth or Bottom Time falls within 2 feet or 2 minutes of a Depth or Time increment of a schedule use the next Deeper and/or next longer schedule.

Document Title
Document No.
Revision Date
Table 1-26 and 1-26x Surface Decompression Using Oxygen
SDC-HSE-JWL-T126126xSDUO-0010-001
March 16, 2004 Revision No. 1 Page 14 of 16
Table 1-26x SURFACE DECOMPRESSION USING OXYGEN WITH NITROX OR AIR IN WATER STOPS
BOTTOM
TIME
(MINS)
15
TIME
TO 1 ST
STOP
6:00
80
IN WATER Stops (mins) at Depths (feet)
Breathing Nitrox or Air
70 60 50 40
2 5
30
7
SURFACE
INTERVAL
*
NOT TO
EXCEED 5
MINUTES
IN CHAMBER
ON OXYGEN
50 40
10 20
30 4:48 2 4 6 10 16 10 50
45 4:45 2 5
SUPERIOR DIVING OPERATIONAL DEPTH/TIME LIMIT
12 20 30 10 70
NOTE: NO REPETITIVE DIVES ALLOWED ON THESE TABLES
NO OF
AIR
BREAKS
1
2
3
ASCENT DECOMP
TIME
(MINS)
10
MINUTES
O2
**
64:00
112:48
167:48
REPET
GROUP
NO
REPET
DIVES
DIVE PROCEDURES – TABLE 1-26 Surface Decompression Using Oxygen with Nitrox or Air in Water Stops
IN WATER PHASE
* Ascent procedures

25 feet per minute to the first stop
 Ascent time between stops & from 30 feet to surface is ONE MINUTE
 Decompression time as specified begins on arrival at the stop depth

Do not include ascent time as part of stop times

Delays at earlier stops are not to be compensated for at later stops
CHAMBER PHASE

Diver is recompressed to 50 feet in 30 seconds and is to be breathing oxygen within 3 minutes of arriving at 50 feet
 Remain at 50 feet for 10 minutes then ascend to 40 feet in 1 minute
 On arrival at 40 feet the first air break is given prior to starting Oxygen time at this depth

Breath Oxygen for the time listed broken into cycles of 20 minutes interspersed with 5 minute air breaks
*50/50 Nitrox Switch

Switch to 50/50 Nitrox at 100 feet during ascent

Nitrox decompression mix is not to be connected to the manifold until the diver passes 100 feet
 On surface divers umbilical is to be flushed thoroughly with air prior to starting next dive

Umbilical flush is to be formally logged
ASCENT FROM 40 FEET

** On completion of total Oxygen time at 40 feet surface the diver at the rate 4 feet per minute (10 minutes)
 Diver to breath Oxygen during the entire ascent.
LOSS OF NITROX

If there is a loss of Nitrox, switch diver to Air and decompress according to table * REPETITIVE DIVES – Are only permitted after a minimum surface interval of 6 hours

Previous bottom time must have been such that divers repet group was no greater than ‘O’

Refer to table 1-10 for Repetitive Group Designator (RGD) not to exceed ‘O’
 Refer to Table 1-12 for new RGD at the end of the surface interval
 Using new RGD refer to Table 1-13 for Residual Nitrogen Time (RNT)
200 feet
* Surface Interval

Upon surfacing the diver has 3 and a half minutes maximum to start recompression in the chamber
NOTE: On any occasion that the Depth or Bottom Time falls within 2 feet or 2 minutes of a Depth or Time increment of a schedule use the next Deeper and/or next longer schedule.

Document Title
Document No.
Revision Date
Table 1-26 and 1-26x Surface Decompression Using Oxygen
SDC-HSE-JWL-T126126xSDUO-0010-001
March 16, 2004 Revision No. 1 Page 15 of 16
Table 1-26x SURFACE DECOMPRESSION USING OXYGEN WITH NITROX OR AIR IN WATER STOPS
BOTTOM
TIME
(MINS)
15
TIME
TO 1 ST
STOP
6:24
80
IN WATER Stops (mins) at Depths (feet)
Breathing Nitrox or Air
70 60 50 40
3 4
30
8
SURFACE
INTERVAL
*
NOT TO
EXCEED 5
MINUTES
IN CHAMBER
ON OXYGEN
50 40
10 20
30 5:12 2 4 7 12 18 10 60
45 5:12 2 6
SUPERIOR DIVING OPERATIONAL DEPTH/TIME LIMIT
14 24 36 10 70
NOTE: NO REPETITIVE DIVES ALLOWED ON THESE TABLES
NO OF
AIR
BREAKS
1
3
3
ASCENT DECOMP
TIME
(MINS)
10
MINUTES
O2
**
65:24
132:12
181:12
REPET
GROUP
NO
REPET
DIVES
DIVE PROCEDURES – TABLE 1-26 Surface Decompression Using Oxygen with Nitrox or Air in Water Stops
IN WATER PHASE
* Ascent procedures

25 feet per minute to the first stop
 Ascent time between stops & from 30 feet to surface is ONE MINUTE
 Decompression time as specified begins on arrival at the stop depth

Do not include ascent time as part of stop times

Delays at earlier stops are not to be compensated for at later stops
CHAMBER PHASE

Diver is recompressed to 50 feet in 30 seconds and is to be breathing oxygen within 3 minutes of arriving at 50 feet
 Remain at 50 feet for 10 minutes then ascend to 40 feet in 1 minute
 On arrival at 40 feet the first air break is given prior to starting Oxygen time at this depth

Breath Oxygen for the time listed broken into cycles of 20 minutes interspersed with 5 minute air breaks
*50/50 Nitrox Switch

Switch to 50/50 Nitrox at 100 feet during ascent

Nitrox decompression mix is not to be connected to the manifold until the diver passes 100 feet
 On surface divers umbilical is to be flushed thoroughly with air prior to starting next dive

Umbilical flush is to be formally logged
ASCENT FROM 40 FEET

** On completion of total Oxygen time at 40 feet surface the diver at the rate 4 feet per minute (10 minutes)
 Diver to breath Oxygen during the entire ascent.
LOSS OF NITROX

If there is a loss of Nitrox, switch diver to Air and decompress according to table * REPETITIVE DIVES – Are only permitted after a minimum surface interval of 6 hours

Previous bottom time must have been such that divers repet group was no greater than ‘O’

Refer to table 1-10 for Repetitive Group Designator (RGD) not to exceed ‘O’
 Refer to Table 1-12 for new RGD at the end of the surface interval
 Using new RGD refer to Table 1-13 for Residual Nitrogen Time (RNT)
210 FEET
* Surface Interval

Upon surfacing the diver has 3 and a half minutes maximum to start recompression in the chamber
NOTE: On any occasion that the Depth or Bottom Time falls within 2 feet or 2 minutes of a Depth or Time increment of a schedule use the next Deeper and/or next longer schedule.

Document Title
Document No.
Revision Date
Table 1-26 and 1-26x Surface Decompression Using Oxygen
SDC-HSE-JWL-T126126xSDUO-0010-001
March 16, 2004 Revision No. 1 Page 16 of 16
Table 1-26x SURFACE DECOMPRESSION USING OXYGEN WITH NITROX OR AIR IN WATER STOPS
BOTTOM
TIME
(MINS)
15
TIME
TO 1 ST
STOP
6:24
80
IN WATER Stops (mins) at Depths (feet)
Breathing Nitrox or Air
70 60 50 40
2 4 5
30
10
SURFACE
INTERVAL
*
NOT TO
EXCEED 5
MINUTES
IN CHAMBER
ON OXYGEN
50 40
10 20
30 5:36 2 5 9 14 20 10 60
45 5:36 2 6
SUPERIOR DIVING OPERATIONAL DEPTH/TIME LIMIT
16 30 42 10 70
NOTE: NO REPETITIVE DIVES ALLOWED ON THESE TABLES
NO OF
AIR
BREAKS
1
3
3
ASCENT DECOMP
TIME
(MINS)
10
MINUTES
O2
**
91:24
139:24
195:36
REPET
GROUP
NO
REPET
DIVES
DIVE PROCEDURES – TABLE 1-26 Surface Decompression Using Oxygen with Nitrox or Air in Water Stops
IN WATER PHASE
* Ascent procedures

25 feet per minute to the first stop
 Ascent time between stops & from 30 feet to surface is ONE MINUTE
 Decompression time as specified begins on arrival at the stop depth

Do not include ascent time as part of stop times

Delays at earlier stops are not to be compensated for at later stops
CHAMBER PHASE

Diver is recompressed to 50 feet in 30 seconds and is to be breathing oxygen within 3 minutes of arriving at 50 feet
 Remain at 50 feet for 10 minutes then ascend to 40 feet in 1 minute
 On arrival at 40 feet the first air break is given prior to starting Oxygen time at this depth

Breath Oxygen for the time listed broken into cycles of 20 minutes interspersed with 5 minute air breaks
*50/50 Nitrox Switch

Switch to 50/50 Nitrox at 100 feet during ascent

Nitrox decompression mix is not to be connected to the manifold until the diver passes 100 feet
 On surface divers umbilical is to be flushed thoroughly with air prior to starting next dive

Umbilical flush is to be formally logged
ASCENT FROM 40 FEET

** On completion of total Oxygen time at 40 feet surface the diver at the rate 4 feet per minute (10 minutes)
 Diver to breath Oxygen during the entire ascent.
LOSS OF NITROX

If there is a loss of Nitrox, switch diver to Air and decompress according to table * REPETITIVE DIVES – Are only permitted after a minimum surface interval of 6 hours
 Previous bottom time must have been such that divers repet group was no greater than ‘O’

Refer to table 1-10 for Repetitive Group Designator (RGD) not to exceed ‘O’
 Refer to Table 1-12 for new RGD at the end of the surface interval
 Using new RGD refer to Table 1-13 for Residual Nitrogen Time (RNT)
220 Feet
* Surface Interval

Upon surfacing the diver has 3 and a half minutes maximum to start recompression in the chamber
NOTE: On any occasion that the Depth or Bottom Time falls within 2 feet or 2 minutes of a Depth or Time increment of a schedule use the next Deeper and/or next longer schedule.