21-36 Change A
U.S. Navy Diving Manual—Volume 5
Figure 21-3. Treatment of Decompression Sickness Occurring while at Decompression Stop in the Water.
Treatment of Decompression Sickness Occurring
While at a Decompression Stop in the Water
Diagnosis:
Symptoms during
decompression
in the water
(Note 1)
Descend
10 fsw
(Note 2)
Significant
relief
noted?
Symptoms
present at
surface ?
Descend
an additional
10 fsw
No
No
Yes
Yes
Compress to 60
fsw in chamber
on Table 5 or
Table 1A
Compress to
60 fsw in chamber
on Table 6 or
Table 3
Decompress by
multiplying all stop
times in table
by 1-1/2
(Note 3)
Remain at treatment
depth at least 30
minutes in addition to
any required
decompression stop
NOTES:
1.
If 100 percent O2 is available for divers with a helmet or full face mask,
shift to this gas at depths of 30 fsw or less.
2.
As an option, the Diving Supervisor may elect not to recompress the
diver 10 feet in the water, but to remove the diver from the water when
decompression risks are acceptable and treat the diver in the chamber.
3.
If recompression goes deeper than the depth of the first stop in the
Decompression Table use a stop time equal to 1-1/2 times the first stop
in the Decompression Table for the one stop deeper than the first stop.
Always take a stop every 10 feet.
