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JOINT FLEET MAINTENANCE MANUAL

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COMFLTFORCOMINST 4790.3 REV A CH-5<br />

NOTES<br />

1. Evolution not required for PSA unless specific equipments/systems were worked or disturbed during<br />

PSA.<br />

2. In the execution of any Sea Trial, whether escorted or not, submarine COs are reminded of their<br />

responsibility to communicate with escorts and/or shore authorities within prescribed, previously<br />

agreed upon time limits to avoid initiation of inadvertent lost contact or submarine disaster procedures.<br />

3. Pumps should be tested in the industrial activity prior to Sea Trials, to determine that they can pump<br />

against a test depth head.<br />

4. Compare all depth and pressure gages. Depth and pressure gages should be checked as soon as the next<br />

specified depth is reached.<br />

5. Integrity of launchers or signal ejectors shall be established by admitting sea pressure through<br />

equalizing lines or flooding connection and the muzzle valve/door operated before conducting<br />

operational tests. Shoot water slugs from specified launchers or signal ejectors, at specified depths, as<br />

required by the CS/CCS test program. Shoot pyrotechnics on initial dive and at test depth on the deep<br />

dive. Shooting of pyrotechnics during the initial dive shall be accomplished in conjunction with the 200<br />

foot EMBT Blow. Shooting of pyrotechnics at test depth during the deep dive shall be accomplished in<br />

conjunction with the test depth EMBT blow.<br />

6. Those seawater systems which are not required for normal safe operation of the ship at test depth but<br />

which have been designed for and may be subjected to test depth pressure should not be subjected to<br />

submergence pressure during the initial dive to any specified depth (e.g., a blown sanitary tank). (See<br />

reference (i)).<br />

7. Check operation of electrodes; head valve and each snorkel safety circuit.<br />

8. Depth increments for cycling vital sea valves are as set forth in reference (i).<br />

9. This evolution (initial operation of hull and back-up valves in fully submerged condition) at depths<br />

other than specified in reference (i) is intended for crew training and is not technically required.<br />

Evolution may be abbreviated or deleted on a case basis with concurrence of the embarked TYCOM<br />

representative.<br />

10. Meggering of antenna may be accomplished during dock trials but must be accomplished prior to initial<br />

deep dive.<br />

I-4D-4

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