6-48 Change A
U.S. Navy Diving Manual—Volume 2
SURFACE-SUPPLIED DIVING OPERATIONS PREDIVE CHECKLIST
(Sheet 1 of 3)
CAUTION
This checklist is an overview intended for use with the detailed Operating
Procedures (OPs) from the appropriate equipment O&M technical manual.
A. Basic Preparation:
__ 1.
Verify that a recompression chamber, Diving Officer, and Diving Medical Officer shall be
present on the diving station for dives of more than 190 fsw.
__ 2.
Verify that proper signals indicating underwater operations being conducted are displayed
correctly.
__ 3.
Ensure that all personnel concerned, or in the vicinity, are informed of diving operations.
__ 4.
Determine that all valves, switches, controls, and equipment components affecting diving
operation are tagged-out to prevent accidental shut-down or activation.
__ 5.
Verify that diving system and recompression chamber are currently certified or granted a Chief
of Naval Operations (CNO) waiver to operate.
B. Equipment Protection:
__ 1.
Assemble all members of the diving team and support personnel (winch operators, boat crew,
watchstanders, etc.) for a predive briefing.
__ 2.
Assemble and lay out all dive equipment, both primary equipment and standby spares for
diver (or standby diver), including all accessory equipment and tools.
__ 3.
Check all equipment for superficial wear, tears, dents, distortion, or other discrepancies.
__ 4.
Check all masks, helmets, view ports, faceplates, seals, and visors for damage.
__ 5.
Check all harnesses, laces, strain reliefs, and lanyards for wear; renew as needed.
C. MK 21 MOD1:
__
Ensure that all Operating Procedures (OPs) have been completed in accordance with UBA
MK 21 MOD 1 Technical Manual, NAVSEA S6560-AG-OMP-010-UBA-21/1.
D. MK 20 MOD 0:
__
Ensure that all Operating Procedures (OPs) have been completed in accordance with UBA
MK 20 MOD 0 Technical Manual, NAVSEA SS600-AK-MMO-010/MK 20 MOD 0.
E. General Equipment:
__ 1.
Check that all accessory equipment – tools, lights, special systems, spares, etc., – are on site
and in working order. In testing lights, tests should be conducted with lights submerged in
water and extinguished before removal, to prevent overheating and failure.
__ 2.
Erect diving stage or attach diving ladder. In the case of the stage, ensure that the screw pin
shackle connecting the stage line is securely fastened with the shackle pin seized with wire or
a safety shackle is used to help prevent opening.
F. Preparing the Diving System:
__ 1.
Check that a primary and suitable back-up air supply is available with a capacity in terms of
purity, volume, and supply pressure to completely service all divers including decompression,
recompressions and accessory equipment throughout all phases of the planned operation.
__ 2.
Verify that all diving system operating procedures have been conducted to properly align the
dive system.
__ 3.
Ensure that qualified personnel are available to operate and stand watch on the dive system.
Figure 6-21a. Surface-Supplied Diving Operations Predive Checklist (sheet 1 of 3).
