The US Navy Method

If the command has 100% oxygen-rebreathers available and individuals at the dive site trained in their use, the following in-water recompression procedure may be used instead of Table 1A:

1. Put the stricken diver on the rebreather and have him purge the apparatus at least three times with oxygen.

2. Descend to a depth of 30 f/9 m with a stand-by diver.

3. Remain at 30 f/9 m, at rest, for 60 minutes for Type I symptoms and 90 minutes for Type II symptoms. Ascend to 20 f/6 m after 90 minutes even if symptoms are still present.

4. Decompress to the surface by taking 60 minutes stops at 20 f/6 m and 10 f/3 m.

5. After surfacing, continue breathing 100% oxygen for an additional three hours.

From the US Navy Diving Manual, Vol. One, Section 8.11.2, D.

NOTE: Gilliam (1993) adds that "This method can be easily adapted to full facemask diving systems or surface supplied oxygen. However, it requires a substantial amount of oxygen to be available, both for the in-water treatment and subsequent surface breathing period."