CHAPTER 8 Surface-Supplied Air Diving Operations
Change A 8-15
5 kW diesel light tower. Provides power to tripod lights, mast lights, underwa-
Hydraulic tool package and underwater lights. As required.
Equipment shelter. Fiberglass container houses filter control console and div-
Two conex boxes. Steel containers for equipments storage.
Flyaway Dive System (FADS) III.
The FADS III is a portable, self-
contained, surface-supplied diver
life-support system designed to
support dive missions to 190 fsw
(Figure 8-9). Compressed air at
5,000 psi is contained in nine 3.15
cu ft floodable volume composite
flasks vertically mounted in an Air
Supply Rack Assembly (ASRA).
The ASRA will hold 9600 scf of
compressed air at 5,000 psi.
Compressed air is provided by a
5,000 psi air compressor assembly
which includes an air purification
assembly and a volume tank
assembly. Three banks of two,
three, and four flasks allow the
ASRA to provide primary and secondary air to the divers as well as air to support
chamber operations. Set-up and operating procedures for the FADS III are found
in the Operating and Maintenance Technical Manual for Fly Away Dive System
(FADS) III Air System, S9592-B1-MMO-010.
ACCESSORY EQUIPMENT FOR SURFACE-SUPPLIED DIVING
Accessory equipment that is often useful in surface-supplied diving operations
includes the following items:
Lead Line. The lead line is used to measure depth.
Descent Line. The descent line guides the diver to the bottom and is used to
pass tools and equipment. A 3-inch double-braid line is recommended, to pre-
vent twisting and to facilitate easy identification by the diver on the bottom. In
use, the end of the line may be fastened to a fixed underwater object, or it may
be anchored with a weight heavy enough to withstand the current.
Figure 8-9. Air Supply Rack Assembly (ASRA)
of FADS III.