JOINT FLEET MAINTENANCE MANUAL

I-4D-3
COMFLTFORCOMINST 4790.3 REV A CH-5
d. Shoot pyrotechnics from each ejector by hand and impulse methods, as applicable (see Notes , 5, and
6).
e. Communicate with escort on WQC at each depth increment or at ten minute intervals, whichever is
sooner. If communications are lost, return to depth at which communications can be established before
continuing (see Note 2).
f. All hands inspect for leaks and report them to the Sea Trial coordinator.
g. Vent the fuel system if sea pressure compensated.
h. Operate all periscopes, checking optics and for leakage. Operate all masts.
i. Test full throw of rudder and planes at slow speeds. (See Note 1).
j. Test operation of trim and drain systems.
k. Check all sonar equipment on each hydrophone.
l. Run ahead at maximum speed allowed by SOE. Operate torpedo tube shutters and ejection pump
shutters. If shutters do not open, gradually reduce speed until shutters open. This establishes "stall
speed" for each shutter.
m. Comply with the Command Control Systems (CS/CCS) Test Program regarding the shooting of
waterslugs. This event is not required by the TYCOM if not required by the CS/CCS Test Program
(see Notes 1, 5, and 6).
n. Snorkel, test operation of stills and air compressors (see Notes 1, 6, and 7).
o. Operate all hull and back-up valves and equalize sea pressure on all systems designed for test depth
(see Notes 6, 8 and 9).
p. Check hovering system (where applicable) (see Notes 1 and 6).
q. Ensure air banks are charged to within 200 psi of full pressure.
r. Line up MBT blow system for maximum blow rate.
s. Conduct EMBT blow from 200 feet keel depth. Check bank pressure before and after surfacing.
Surfacing with EMBT blow may be delayed to permit additional testing, commencing pre-transit valve
operating cycling or transit submerged. However, first surface after initial tightness dive must be by
EMBT blow from 200 feet.
t. Additional requirements may be imposed at the discretion of the CO.