U.s. Navy Dive Manual Rev 6 Ch. A

Front 1

Six Tables are required to perform the full spectrum of air dives

Back 1

-No-Decompression Limits and Repetitive Group Designation Table for No- Decompression Air Dives. This Table gives the no-decompression limits and
the repetitive group designators for dives that do not require decompression stops.
-Air Decompression Table. This Table gives the decompression schedules and repetitive group designators for dives that require decompression stops.
-Residual Nitrogen Timetable for Repetitive Air Dives. This Table allows the diver to determine his Residual Nitrogen Time when performing a repetitive dive.
-Sea Level Equivalent Depth Table. This Table allows the diver to correct the sea level decompression tables for use at altitude.
-Repetitive Groups Associated with Initial Ascent to Altitude Table. This Table allows the diver to adjust his decompression if he is not fully equilibrated at altitude.
-Required Surface Interval Before Ascent to Altitude After Diving. This Table tells the diver when it is safe to fly or ascend to higher altitude after a dive.

Front 2

Pneumofathometer Correction Factors.

Back 2

Pneumofathometer Depth Correction Factor
0-100 fsw +1 fsw
101-200 fsw +2 fsw
201-300 fsw +4 fsw
301-400 fsw +7 fsw

Front 3

Descent Rate.

Back 3

The descent rate on an air dive is not critical, but in general it should not exceed 75 fsw/min.

Front 4

Ascent Rate.

Back 4

Minor variations in the rate of ascent between 20 and 40 fsw/min are acceptable. For surface decompression, the ascent rate from the 40 fsw water stop to the surface is 40 fsw/min.

Front 5

Decompression Stop Time.

Back 5

For in-water decompression on air, the time at the
first decompression stop begins when the diver arrives at the stop and ends when he leaves the stop. For all subsequent stops, the stop time begins when the diver leaves the previous stop and ends when he leaves the stop.

Front 6

Eligibility for Surface Decompression.

Back 6

A diver is eligible for surface decompression
upon completion of the 40 fsw water stop.

Front 7

Optional Shallow Water No-Decompression Table.

Back 7

depth range of 30–50 fsw in one-foot increments. used when the diver’s maximum depth is accurately known at the beginning of the dive or when continuous depth recording is available,

Front 8

In-Water Decompression on Air and Oxygen.

Back 8

If more than 30 minutes must be spent on oxygen, a 5 min air break is required every 30 minutes. When an air break is required, shift the ORCA or FMGS to air for 5 minutes then back to 100% oxygen. Ventilation of
the divers is not required.

Front 9

Sur "D"

Back 9

The first period consists of 15 minutes on oxygen at 50
fsw followed by 15 minutes on oxygen at 40 fsw. Periods 2–4 are spent at 40 fsw. If more than 4 periods are required, the remaining periods are spent at 30
fsw.