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JOINT FLEET MAINTENANCE MANUAL

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APPENDIX D<br />

LISTING OF TESTS TO BE<br />

PERFORMED DURING INITIAL TIGHTNESS DIVE<br />

I-4D-1<br />

COMFLTFORCOMINST 4790.3 REV A CH-5<br />

1. The following tests and evolutions will be carried out on the surface en route to the test dive area and prior to the<br />

initial tightness dive:<br />

a. Underway. Rig for dive (for Alpha Trial, rig for deep submergence is required for the initial dive).<br />

Compensate. Start-up evaporator.<br />

b. Ship's Force instruct Sea Trial riders on the proper use of EAB masks.<br />

c. Conduct operational test of rudder in normal and emergency modes.<br />

d. Navigation system check. Take fixes by all electronic, celestial, and visual means and compare.<br />

e. Check underwater log(s) using measured mile or navigational fixes to determine accuracy.<br />

f. Check accuracy of all bearing transmitters and indicators. Compare sonar, visual and radar bearings.<br />

g. Check operation of all radar.<br />

h. Check all radio transmitters, receivers and electronic equipment.<br />

i. Inspect stern tube packing gland/seals and circulating water flow.<br />

j. Check Dead Reckoning Analyzer Indicator (DRAI), Dead Reckoning Analyzer (DRA), Dead<br />

Reckoning Tracers (DRT) and RPM indication.<br />

k. Test fathometer(s) and compare with charted soundings.<br />

l. Run ahead at full power long enough for temperatures to reach a stable value. After readings have<br />

stabilized, operate rudder through full throw in each direction in normal and emergency power. Time<br />

evolution and compare with design values. Check out hand modes.<br />

m. Ahead flank to back emergency.<br />

n. Run astern up to full power for 10 minutes or to meet the intent of a more restrictive Industrial Activity<br />

Test Form. Operate rudder through full throw in each direction in normal and emergency power<br />

(measure degrees per second travel and compare with design value).<br />

o. Fire Control System operation. (See Note 1).<br />

p. Check operation and accuracy of ship's gyrocompass.

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