VOLUME I

CHAPTER 4

TRIALS

REFERENCES.

(a) OPNAVINST 9080.3 - Procedures for Tests and Trials of Navy Nuclear Powered Ships Under Construction, Modernization, Conversion, Refueling and Overhaul

(b) COMNAVAIRLANTINST 9080.2 - Conduct of Trials and Inspections Incident to Construction, Overhauls or Availabilities of Nuclear Powered Aircraft Carriers (CVN)

(d) OPNAVINST 4700.8 - Trials, Acceptance, Commissioning, Fitting Out, Shakedown, and Post Shakedown Availability of U.S. Naval Ships Undergoing Construction or Conversion

(e) COMNAVSURFLANT/COMNAVSURFPACINST 3502.2 - Surface Force Training Manual

(f) INSURVINST 4730.2 - Trials and Material Inspections of Submarines

(g) NAVSEA S9086-C4-STM-000 - NSTM Chapter 094 (Trials)

(h) INSURVINST 4730.1 - Trials and Inspections of Surface Ships

(i) NAVSEAINST C9094.2 - Submarine Valve Operation Requirements for Builders and Post-Overhaul Sea Trial Test Dives

(j) OPNAVINST C3000.5 - Operation of Naval Nuclear Powered Ships

(k) COMSUBLANT OPORD 2000

(l) OPNAVINST 5420.53 - General Precept for the Conduct of Trials and Material Inspections of Ships and Service Craft

(m) INSURVINST 4730.11 - Preparation of Deficiency Forms

(n) OPNAVINST 4790.4 - Ships' Maintenance and Material Management (3-M) Manual

(o) NAVSEA S0300-B2-MAN-010 - Supervisor of Shipbuilding, Conversion and Repair Operations Manual

(p) OPNAVINST C9210.2 - Engineering Department Manual for Naval Nuclear Propulsion Plants

(q) COMSUBLANTINST 5400.4/COMSUBPACINST 5400.7 - Submarine Force, U.S. Atlantic/Pacific Fleet Regulations

LISTING OF APPENDICES.

A Specific Dock Trial Test Areas

B Minimum Fast Cruise Requirements

C Listing of Tests to Be Performed During Nuclear Powered Aircraft Carrier Builder's Trials

D Listing of Tests to Be Performed During Initial Tightness Dive

E Escort Ship Capabilities for Submarine Sea Trials

F Listing of Tests to be Performed Prior to, During and Following First Dive to Test Depth

4.1 PURPOSE. To identify the Trials incident to new construction, provide a brief description of each, identify unique support requirements and list specific test areas.

4.2 DOCK TRIALS.

4.2.1 Purpose. To demonstrate that major systems and equipments are ready to support Fast Cruise and Sea Trials.

4.2.2 Conduct. Dock Trials are conducted by Ship's Force in accordance with reference (a) for nuclear powered ships and in accordance with the Builder's Contract for non-nuclear ships. Normally a period of one day is assigned for integrated Dock Trials, tests and evolutions.

4.2.3 Scheduling. Dock Trials must take place prior to crew certification for submarines, prior to Fast Cruise for Nuclear Powered Aircraft Carriers and prior to the first Ship's Force underway period for non-nuclear surface ships. Dock Trials should be scheduled by mutual agreement between the ship, shipbuilder and the Supervising Authority. Dock Trials should be completed with adequate time allowed to correct deficiencies.

NOTE: THE SHIPBUILDER/SUPERVISING AUTHORITY MAY DESIRE TO CONDUCT "MACHINERY CHECKOUT" OR SYSTEM CHECKS PRIOR TO DOCK TRIALS IN ORDER TO TEST SHIP SYSTEMS. COMPLETION OF REPAIRS AND MODIFICATIONS ARE NOT REQUIRED EXCEPT FOR SYSTEMS THAT DIRECTLY SUPPORT THE TESTS. IN ORDER TO SUPPORT THESE EVOLUTIONS, CLOSE LIAISON BETWEEN THE PROSPECTIVE COMMANDING OFFICER (PCO)/OFFICER IN CHARGE (OIC) AND THE SHIPBUILDER/SUPERVISING AUTHORITY WILL BE REQUIRED.

4.2.4 Specific Test Areas. There are specific tests which relate to both system and ship safety which must be conducted in preparation for Fast Cruise and Sea Trials. Appendix A of this chapter lists the minimum alongside tests to be conducted by Ship's Force during Dock Trials. References (b) and (c) provide additional information for Nuclear Powered Aircraft Carriers.

4.3 FAST CRUISE.

4.3.1 Purpose. To train the crew and determine the crew's ability to safely take the ship to sea.

4.3.2 Conduct.

a. Fast Cruise is conducted in accordance with references (a), (d), and (e).

b. In addition to the normal underway routine, the Commanding Officer (CO) or OIC shall have all equipment operated to check for proper operation and to determine the state of training of the crew. Fast Cruise shall, as far as is practical, simulate at-sea operating conditions. It is to be conducted by Ship's Force and is to be unhampered by construction or repair work or by movement of industrial activity personnel through the ship. Neither the shipbuilder nor the Supervising Authority shall schedule any trials, tests or other work on the ship during this period.

c. The ship will be operated as if underway, simulating the various evolutions required for safe operation. Each underway watch section shall be exercised in the evolutions which are normally performed on a section basis. Check out all communication systems during each evolution. Ensure that each is in proper working order and that, where duplicate systems exist, a priority system is designated.

4.3.3 Scheduling. Fast Cruise is scheduled immediately prior to underway trials. Approximately 7 days prior to the first underway trial, the Supervising Authority with the concurrence of the CO/OIC notifies the Ship Program Manager that the ship is ready to commence Fast Cruise (Volume I, Chapter 2, paragraph 2.4.1.v refers).

4.3.4 Specific Test Areas. Appendix B of this chapter lists the minimum evolutions and drills to be conducted during Fast Cruise. Additional drills and evolutions are at the discretion of the PCO or OIC. References (b) and (c) provide additional information for Nuclear Powered Aircraft Carriers, reference (e) for non-nuclear surface ships.

4.3.5 Reports (Nuclear Powered Ships only). The Supervising Authority with concurrence from the PCO/OIC reports the successful completion of Fast Cruise using the format of Volume I, Chapter 2, Appendix B7 (submarines only). Volume I, Chapter 2, paragraph 2.4.1.w refers.

4.4 SEA TRIALS.

4.4.1 General.

a. The policies, procedures and responsibilities pertaining to Sea Trials for ships undergoing construction are set forth with reference (d). References (a), (f), (g) and (h) augment the basic instruction.

b. Sea Trials for the various platforms undergoing construction differ in complexity, conduct and scope of Ship's Force involvement. Non-nuclear platforms such as the DDGs or LHDs go through Builder's Trials (BT) which for the most part are conducted with little to no involvement by Ship's Force. Industrial activity employees take the ship to sea and perform the majority of system/equipment testing. Paragraph 4.4.2 of this chapter provides additional information concerning BTs.

c. Nuclear powered ships' Sea Trials, however, are much more orientated to Ship's Force involvement. Ship's Force is responsible for taking the ship to sea and operating all shipboard equipment. The terms Alpha Trial, Bravo Trial, Charlie Trial, Combined Trial (CT) and Guarantee Material Inspection (GMI) are most often associated with submarine Sea Trials whereas Nuclear Powered Aircraft Carriers undergo BTs prior to Acceptance Trials (AT). Subsequent paragraphs provide amplifying information concerning these trials.

d. Underway trials following construction, particularly initial submerged and test depth trials for submarines, must be undertaken with the knowledge that the crew lacks recent experience operating as a unit and that the ship's structure and fittings have not been tested in an at-sea environment. All tests and procedures must be conducted carefully and methodically. In the case of submarines, systems and components designed to operate at test depth should not be exercised at test depth for the sole purpose of proving the design. They should be operated at the deepest depth at which they might be used. Trials and tests which are inherently hazardous should not be conducted. For example, a submarine's hovering system should not be demonstrated at test depth. Reference (i) provides additional information concerning the testing of submarine seawater systems during underway Sea Trials.

e. The following general conditions apply:

(1) A shipbuilder generated, Supervising Authority/Ship Program Manager/Type Commander (TYCOM) approved agenda is required for each Sea Trial.

(2) All trial periods must be organized such that each member of the crew has an opportunity to get six uninterrupted hours of sleep during each 24 hour period. Sea Trial elements which can be accomplished by a normal watch section may be conducted concurrently with crew rest periods.

(3) Sea Trials should normally be scheduled to allow at least three weeks between CT/AT and the scheduled delivery date.

(4) The prerequisites for Nuclear Powered Aircraft Carrier and submarine Sea Trials are a Pre-Critical Reactor Safeguard Examination (RSE), Crew Certification, Dock Trials and Fast Cruise.

(5) Each submarine watch section shall be provided with approximately two hours experience submerged at moderate speeds prior to the deep dive or full power run.

(6) Critical operation of reactors while naval nuclear powered ships are in a Naval or private industrial activity will be governed by reference (j). Prior to delivery, permission to conduct critical reactor plant operations must be obtained by the Supervising Authority from Naval Sea Systems Command (NAVSEA) Nuclear Propulsion Directorate (08).

(7) During inspections, deficiencies should be limited to those items for which a correction is mandatory to ensure safe operation during Sea Trials.

(8) At the start of Fast Cruise the ship should be ready in all respects for the commencement of Sea Trials with the exception of the additional training the crew will receive during Fast Cruise.

(9) Inspectors must determine that all work/testing necessary to support Sea Trials has been completed or identified for completion prior to commencement of Fast Cruise including the following:

(a) All ship systems which affect safe operation during Sea Trials must be operable.

(b) All work necessary for safe operation of the ship during Sea Trials has been satisfactorily completed and tested. Included must be a check for any special configuration or installations ensuring that they have been authorized by the proper authority (NAVSEA and TYCOM), that their impact has been fully assessed and that the Sea Trial agenda addresses these impacts or limitations.

(10) NAVSEA and the Supervising Authority are expected to properly discharge their responsibilities for quality assurance and control of authorized industrial work (e.g., it is not necessary for the Immediate Superior in Command (ISIC) inspections to inspect the quality of the pressure hull radiographs or other nondestructive test records of the industrial activity).

(11) Following completion of the required training and material readiness certification, the CO/OIC must keep the ISIC fully informed of any changes in personnel, training and/or material status which could affect the validity of certification. Prompt notification is required to permit revision of Operational Orders and services required.

4.4.2 Builder's Trials. BTs conducted by a private shipbuilder are normally comprised of a Builder's Dock Trial (BDT) and one or more Builder's Sea Trials (BST). Some DDGs are currently undergoing three BSTs. The first BST, referred to as an Alpha Trial by the DDG community, is primarily a propulsion plant trial. The second BST, referred to as a Bravo Trial, primarily covers Combat System evolutions and the third BST is the AT. While the actual content of BSTs will be dependent upon the platform, the primary purpose is still the same; the validation of ship's equipment and systems in preparation for Charlie Trials/AT. Appendix C of this chapter provides a sample listing of tests to be performed during a Nuclear Powered Aircraft Carrier's BT.

4.4.3 Alpha Sea Trial (Submarines only). A submarine's first underway period primarily conducted for propulsion plant testing and the initial tightness dive. (First ship of each class normally conducts a dive to Test Depth during this trial.)

a. Testing. The tests and evolutions to be carried out while on the surface en route to the test dive area, just prior to the initial dive and during the initial dive are identified in Appendix D of this chapter.

b. Restrictions. The following rules apply to the conduct of trials and tests associated with ship construction, Ship Program Manager sponsored Trials/Tests or any other situation where the ship is requested to conduct trials or tests:

(1) No test or trial event shall be conducted that requires crew intervention to avoid exceeding normal operating limits. Trial agendas will be based on the expectation that the ship will remain within normal operating limits of the Submerged Operating Envelope (SOE) and at angles less than 30 degrees.

(2) The trial director must be prepared to project whether the next event might exceed normal operating limits based on the empirical results of the previous event. A run that is predicted to exceed normal operating limits should be deleted along with the more demanding runs of that sequence.

(3) Any run which will result in exceeding normal limits of the SOE or 30 degree angles but which is essential to provide adequate test data must be specifically approved by the TYCOM. The test/trial sponsor will obtain this permission.

(4) A violation of the SOE limit or exceeding a 30 degree angle, not previously approved, shall be reported by unit Situation Report (SITREP). No further testing or trials shall be conducted until TYCOM concurrence is obtained.

(5) Specific written approval by the TYCOM is not required to operate outside the upper limits of the SOE, i.e., shallow and fast, while conducting the following operations during Sea Trials or tests in accordance with an agenda approved by the ISIC, Ship Program Manager or higher authority:

(a) Conducting full power runs or cavitation curves.

(b) Ship Program Manager sponsored acoustic trials in accordance with an approved acoustic trial agenda.

(6) The first underway tests will be limited in scope. The initial tightness dive will be a deliberate, planned, step-by-step evolution as defined in Appendix D of this chapter, using conservative angles and moderate speed. The maximum water depth for this dive shall be 400 feet, as prescribed by reference (k).

c. Escort.

(1) The submarine shall be accompanied by an escort properly equipped with sonar communication equipment. The escort ship must have the capabilities identified in Appendix E of this chapter. Specifically an escort is required for:

NOTE: FOR ALPHA SEA TRIAL, A BACK-UP ESCORT WILL BE ASSIGNED AND READY IN CASE OF FAILURE OF THE PRIMARY ESCORT.

(a) Initial tightness dive after construction and the first dive to any deeper depth.

(b) Initial deep dive after construction.

Blow for first time from each depth. Trial agenda will specify depths.
Any blow from greater than 400 feet. Rationale is to give submarine added protection to prevent interference from any surface contact.

NOTE: IN ALL CASES, HULL STRENGTH/TIGHTNESS AND VALVE OPERATIONS WILL HAVE BEEN TESTED TO A DEPTH EQUAL TO OR GREATER THAN EMBT BLOW DEPTH BEFORE TESTING EMBT BLOW SYSTEM.

(d) The second and subsequent underway periods if major hull and system work has been accomplished since the last Sea Trial.

(2) Alternate Escort. If a surface ship meeting the requirements of Appendix E of this chapter is not available, then a submarine with the required capabilities will be assigned. In any event, each situation must be examined on a case basis and approval by the TYCOM must be obtained to conduct the initial tightness or test depth dives.

(3) When an escort ship is other than a submarine, an officer qualified in submarines (Gold Dolphins) must be embarked during the escort duty.

(4) Assignment of Deep Submergence Rescue System (DSRS). A DSRS consisting of a designated Deep Submergence Rescue Vehicle (DSRV) and a DSRV support ship, will be placed in a modified alert status at the beginning of those Sea Trials requiring an escort for:

(a) Ship's initial trim and deep dive events.

(b) Subsequent Sea Trials until the completion of the initial dive to design test depth.

(c) If, in the TYCOM's judgement, a Sea Trial requires an escort due to major hull cuts, etc., the TYCOM shall obtain Ship Program Manager concurrence when determining the need for escort/DSRS services. The ship conducting Sea Trials will notify Commander, Submarine Development Group One, San Diego, CA when DSRS services are no longer required due to completion of the events necessitating the alert status or due to delays in completing Sea Trials.

d. Reporting Criteria. The Supervising Authority is responsible for reporting the satisfactory completion of Alpha Sea Trial to the Ship Program Manager. Volume I, Chapter 2, Appendix C refers.

4.4.4 Bravo Sea Trial (Submarines only). Bravo Sea Trial is generally the submarine's second underway period and first dive to Test Depth.

NOTE: THE FIRST SHIP OF EACH CLASS NORMALLY CONDUCTS ITS FIRST DIVE TO TEST DEPTH DURING ALPHA TRIAL.

a. Testing. The tests and evolutions to be carried out following the initial tightness dive and prior to the deep dive, during the deep dive, submerged following the deep dive, and on the surface following the deep dive, are identified with Appendix F of this chapter.

b. Restrictions. As specified in paragraph 4.4.3.b of this chapter.

c. Escort. As specified in paragraph 4.4.3.c of this chapter.

d. Reporting Criteria. With the exception of reporting the deficiencies during the trial, reporting of the completion of Bravo Trial is not required. Daily SITREPs to the Supervising Authority and the Supervising Authority's message concerning the completion of all trials (Volume I, Chapter 2, Appendix D refers) satisfies the reporting requirements.

4.4.5 Charlie Sea Trial (Submarines only). Charlie Sea Trials are conducted prior to CT. Bravo Trial retest items are also included in this trial. The standard restrictions and escort requirements as specified per paragraphs 4.4.3.b and 4.4.3.c of this chapter apply.

4.4.6 Acoustic Trials (Platform and Radiated) (Submarines only). New construction acoustic trials, performed by the shipbuilder, are accomplished to determine, under various conditions of operation, the radiated and platform acoustic signatures of the submarine, the controlling noise offenders including those which are speed dependent, and whether or not the submarine meets its underway noise objectives. Proper operation of systems/components and the use of proper personnel quieting techniques is vital for successful acoustic measurements. Acoustic trials performed by Naval Surface Warfare Center (NSWC) are used to establish the ship's baseline signature for normal operating conditions by performing independent measurements under preset conditions of speed, depth, aspect angle, and machinery line up. It is imperative that Ship's Force understand that this trial will determine its future operating conditions during various "patrol quiet" conditions.

4.4.7 Shock Trials. Shock Trials are designed to test the survivability characteristics of a ship under deliberate and controlled conditions. Normally scheduled for the first ship of a class just before Post Shakedown Availability (PSA); Shock Trials satisfy Congressionally mandated Live Fire Test and Evaluation requirements. Ship Program Managers are responsible for the development of a management plan for the conduct of Shock Trials.

4.4.8 Acceptance Trials/Combined Trials/Final Contract Trials/Guarantee Material Inspection.

a. Reference (d) tasks the Board of Inspection and Survey (INSURV) with conducting an independent verification of the readiness of a newly constructed ship prior to its acceptance into Naval Service. Reference (l) states that the procedures for conducting trials and inspections shall be specified by the President, INSURV. References (f) and (h) provide those procedures for submarines and surface ships respectively. References (f) and (h) are augmented by reference (a) in their application to nuclear powered ships. References (m) and (n) provide detailed information concerning the documentation of deficiencies. In addition, each Supervising Authority, TYCOM, the Naval Ships' Technical Manual (NSTM) and reference (o) all provide additional information concerning AT/CT/GMI/Final Contract Trials (FCT). TYCOM directives are identified in the applicable TYCOM 5215 Notice.

b. Prior to the acceptance and delivery of a new ship, all machinery, electronics and weapons systems installed shall be subjected to ATs to determine that the installations are capable of meeting performance specifications. Depending upon the platform type these trials are referred to as either ATs, or CTs. This independent verification of the ship's readiness for acceptance and recommendation for fleet introduction, as specified in reference (d), is the responsibility of the President, INSURV.

c. These trials are generally two part evolutions. There is an underway portion during which time the INSURV observes the performance of the ship and all equipment and systems. Upon completion of the underway portion, trial board designated equipment and associated components are disassembled for post trial examination (the open and inspect evolution). References (f) and (h) provide amplifying information concerning this issue.

d. CTs, usually the norm for submarines, is a combination of ATs and FCTs. The AT for non-submarine platforms results in a conditional acceptance primarily based on the fact that the ship still requires fitting out. Submarines go through the fitting out period during the construction phase which produces a completed ready for sea vessel at delivery. The standard restrictions and escort requirements as specified per paragraphs 4.4.3.b and 4.4.3.c of this chapter apply.

e. FCTs are conducted after the ship has been fully equipped, armed, made complete and ready for service. These trials are normally held just prior to PSA and prior to the end of the guarantee period. Their objective is to determine if there are any defects, failures or deterioration, other than that due to normal wear and tear, directly related to shipbuilder fault which have not been corrected or resolved. The scope of FCTs is essentially the same as AT.

f. A GMI is a material inspection, conducted on submarines prior to PSA by an INSURV in accordance with reference (f).

g. INSURV reports from previous ships as held by the Supervising Authority provide familiarity with problems and corrective actions already taken. In addition, these reports provide a baseline for conducting shipboard inspections and generating inputs for the PCO's monthly progress reports.

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APPENDIX A

SPECIFIC DOCK TRIAL TEST AREAS

Test Area	Class of Ship
	AOE	CVN	DDG	LHD	LPD	LSD	MHC	SSBN	SSN
1. Check all sound powered/interior communications circuits between all stations.	X	X	X	X	X	X	X	X	X
2. Test all alarms, i.e., General Quarters, Collision, etc.	X	X	X	X	X	X	X	X	X
3. Test each indication on Ballast Control Panel.								X	X
4. Test whistle.	X	X	X	X	X	X	X	X	X
5. Check emergency lights.	X	X	X	X	X	X	X	X	X
6. Operate all hydraulic plants using each installed pump.	X	X	X	X	X	X	X	X	X
7. Conduct a complete air charge using only ship's compressors.								X	X
8. Conduct a normal battery charge using only ship's power and equipment.								X	X
9. Conduct low pressure blow of all MBTs. Thereafter conduct dockside operation portion of URO MRC 022.								X	X
10. Flood sanitary tanks and then blow/pump them.								X	X
11. Operate each main vent valve in hand and power. Following operation, with vent valves shut, conduct a controlled removal of MBT vent covers, one at a time, to check MBT vents for leaks.								X	X
12. Operate the outboard induction valve in hand and power.								X	X
13. Operate the diesel engine exhaust valve in hand and power.								X	X
14. Operate inboard induction valves.								X	X
15. Raise, train and lower periscopes, snorkel, radar and antenna masts and fairings.								X	X
16. Test operation of all radio transmitters and receivers using all antennas.	X	X	X	X	X	X	X	X	X
17. Operate all radar equipment at rated conditions.	X	X	X	X	X	X	X	X	X
18. Operate all sonar equipment at rated conditions.			X				X	X	X
19. Take and plot fixes using all navigation equipment and each antenna.	X	X	X	X	X	X	X	X	X
20. Test operation of drain pump(s) from all operating locations using each bilge suction.								X	X
21. Test operation of trim/ballast control/list control system and pump by pumping to and from each tank and by pumping to and from sea (from all operating locations).	X	X	X	X	X	X		X	X
22. Calculate and enter the diving trim compensation.								X	X
23. Test operation of portable submersible pump from each installed outlet.	X	X	X	X	X	X	X	X	X
24. Fire waterslugs from torpedo room.								X	X
25. Fire waterslugs from weapons launch console.								X	X
26. Test magazine/pyro flooding system.	X	X	X	X	X	X	X	X	X
27. Operate each lube oil system, including pumps, controllers, purifiers and indicators.	X	X	X	X	X	X	X	X	X
28. Start SINS/ESGN and gyrocompass; determine that they settle out; take azimuth; check all repeaters.	X	X	X	X		X		X	X
29. Check fresh water system, have water samples analyzed.	X	X	X	X	X	X	X	X	X
30. Test capstans.	X	X	X	X	X	X	X	X	X
31. Test sail or bow planes as applicable and stern planes tilting in hand, normal power and emergency. Test normal and emergency plane angle indicators.								X	X
32. Operate steering system. Test normal and emergency rudder angle indicators.	X	X	X	X	X	X	X	X	X
33. Check alignment of periscopes, TBTs and all bearing and range repeaters.								X	X
34. Test engine order telegraphs.	X	X	X	X	X	X	X	X	X
35. Test ABTs.	X	X	X	X	X	X	X	X	X
36. Operate each watertight door and hatch.	X	X	X	X	X	X	X	X	X
37. Check operation of escape hatch/scuttle fittings.	X	X	X	X	X	X	X	X	X
38. Operate each bulkhead flapper and each inter-compartment air salvage valve.								X	X
39. Operate Signal Ejector by impulse and by hand. Demonstrate satisfactory operation of the three inch launcher system both locally and remotely by firing waterslugs and operating the hand rammer through one complete cycle.								X	X
40. Turn on and check navigation/running lights for brightness and proper lenses (to be done at night). Includes Flight Deck lighting.	X	X	X	X	X	X	X	X	X
41. Check air conditioning, chill water, ventilation, and heating systems.	X	X	X	X	X	X	X	X	X
42. Check underwater log.	X	X	X	X	X	X	X	X	X
43. Check operation of all 400 cycle generating equipment.	X	X	X	X	X	X	X	X	X
44. Check out all galley, messing, and ship's service equipment.	X	X	X	X	X	X	X	X	X
45. Check fathometer.	X	X	X	X	X	X	X	X	X
46. Check bilge flooding alarms.	X	X	X	X	X	X	X	X	X
47. Check dummy log.	X	X	X	X	X	X	X	X	X
48. Check all HP and LP air system.	X	X	X	X	X	X	X	X	X
49. Operate distilling units.	X	X	X	X	X	X	X	X	X
50. Check out anchor windlass and brake operation.	X	X	X	X	X	X	X	X	X
51. Check battery water system.								X	X
52. Check out atmosphere monitoring equipment, both installed and portable.		X						X	X
53. Operate oxygen generator, CO2 scrubbers, CO burners, and emergency air breathing system.								X	X
54. If possible, lower, train (if applicable), operate and raise secondary propulsion motor(s).								X	X
55. Ensure that all required planned maintenance to ship depth detectors is complete.								X	X
56. Operate the diesel.	X	X	X	X	X	X	X	X	X
57. Engage and disengage the clutch.			X					X	X
58. Test Main Engines; Submarines jack main engines.	X	X	X	X	X	X	X	X	X
59. Ensure 5 day supply of oxygen onboard.								X	X
60. Check out all TV monitoring systems.	X	X	X	X	X	X	X	X	X
61. Check out SASS upper and lower trolley cars.		X
62. Check out small arms lockers and security devices.	X	X	X	X	X	X	X	X	X
63. Check out all IFF equipments.	X	X	X	X	X	X	X	X	X
64. Check out degaussing equipment (where applicable).	X	X	X	X	X	X	X		X
65. Check out Hangar Bay doors.	X	X	X	X
66. Check out damage control equipment.	X	X	X	X	X	X	X	X	X
67. Inspect and operate oxygen and nitrogen systems.	X	X		X		X		X	X
68. Check out all tank level indicating systems.	X	X	X	X	X	X	X	X	X
69. Check out Flight Deck communications.	X	X	X	X		X
70. Check out meteorological equipment.	X	X		X		X
71. Check out graphics preparation/display equipment.	X	X	X	X	X	X	X
72. Check out Weapon Systems. Check to include loading of dummy missile at each launch station, transmission of fire control signals and operation of launchers in all modes.	X	X	X	X		X	X	X	X
73. Operate all electrical/mechanical medical equipment.	X	X	X	X	X	X	X	X	X
74. Inspect all compartments for proper stowage and cleanliness.	X	X	X	X	X	X	X	X	X
75. Inspect boiler and diesel fuel oil systems.	X	X	X	X	X	X	X	X	X
76. Test and inspect jet blast deflectors.		X
77. Test and inspect JP-5 fuel systems.	X	X	X	X	X	X
78. Test and inspect all aircraft starting and handling equipment.	X	X	X	X	X	X
79. Test and inspect aircraft landing equipment including landing signal officer equipment, arresting gear, crash barriers, as applicable.	X	X	X	X	X	X
80. Operate all RAS equipment.	X	X	X	X	X	X	X
81. Inspect paint lockers and sprinkling systems.	X	X	X	X	X	X	X
82. Operate all accommodation ladders.	X	X	X	X	X	X	X
83. Operate all conveyors.	X	X	X	X		X
84. Launch and raise motor whaleboat.	X	X	X	X	X	X	X
85. Operate all boats.	X	X	X	X	X	X	X
86. Test and inspect lifeboat/life raft stowage and launch equipment.	X	X	X	X	X	X	X
87. Test and inspect all elevators in all modes of operation.	X	X	X	X	X	X
88. Test and inspect all fire fighting systems.	X	X	X	X	X	X	X	X	X
89. Test and inspect refrigeration systems.	X	X	X	X	X	X	X	X	X
90. Test and inspect all seawater cooling systems.	X	X	X	X	X	X	X	X	X
91. Operate stern gate doors.				X	X	X
92. Operate boat handling cranes.				X	X	X
93. Conduct URO MRC 029.								X	X
94. Test and inspect Torpedo Handling System.								X	X
95. Test and inspect aircraft elevators.		X		X
96. Test and inspect aircraft launching equipment including catapults.		X

APPENDIX B

MINIMUM FAST CRUISE REQUIREMENTS

Requirement	Class of Ship
	AOE	CVN	DDG	LHD	LPD	LSD	MHC	SSBN	SSN
1. Make all preparations for getting underway.	X	X	X	X	X	X	X	X	X
2. Station the maneuvering watch/sea and anchor detail.	X	X	X	X	X	X	X	X	X
3. Station the normal underway watch (section watches).	X	X	X	X	X	X	X	X	X
4. Simulate getting underway and return to port. (Day and Night)	X	X	X	X	X	X	X	X	X
5. Walk through all major Sea Trial evolutions.	X	X	X	X	X	X	X	X	X
6. Walk through the cycling of hull and back-up valves to be tested during the deep dive.								X	X
7. Exercise the reduced visibility detail.	X	X	X	X	X	X	X	X	X
8. Spot check storage and availability of spare parts and tools. Verify adequacy of stores and provisions.	X	X	X	X	X	X	X	X	X
9. Rig for dive and rig for surface.								X	X
10. Simulate diving and surfacing.								X	X
11. Rig for deep submergence.								X	X
12. Conduct the following emergency drills:
a. Fire	X	X	X	X	X	X	X	X	X
b. Collision	X	X	X	X	X	X	X	X	X
c. Flooding	X	X	X	X	X	X	X	X	X
d. Toxic Gas								X	X
e. Abandon Ship	X	X	X	X	X	X	X	X	X
f. Man Overboard	X	X	X	X	X	X	X	X	X
g. Submarine Escape								X	X
h. Loss of AC Power	X	X	X	X	X	X	X	X	X
i. Emergency Ventilation								X	X
j. Loss of Air Conditioning/ACW		X						X	X
k. Loss of Lighting	X	X	X	X	X	X	X	X	X
l. Loss of Interior Communications	X	X	X	X	X	X	X	X	X
m. Loss of Steering	X	X	X	X	X	X	X	X	X
n. Engine Casualty Control	X	X	X	X	X	X	X	X	X
o. Flight deck and hangar deck crash/fire drills, barricade drills, and MOVLAS drills		X
13. Set General Quarters. Exercise the crew at battle stations.	X	X	X	X	X	X	X	X	X
14. Conduct communication and ECM drills.	X	X	X	X	X	X	X	X	X
15. Conduct an air charge to all air banks.								X	X
16. Bleed oxygen and ventilate ship. Ensure 5 day supply of oxygen onboard.								X	X
17. Anchor (walk-through).	X	X	X	X	X	X	X	X	X
18. Exercise damage control party with emergency and damage control equipment.	X	X	X	X	X	X	X	X	X
19. Operate atmosphere control equipment and take air samples.								X	X
20. Perform the minimum Fast Cruise requirements for nuclear propulsion plants contained in reference (p).		X						X	X
21. Operate air conditioning plants to demonstrate ability to carry the maximum existing ship's air conditioning load or 100% capacity.	X	X	X	X	X	X	X	X	X
22. Operate fresh water/seawater heat exchangers at sufficient load to demonstrate proper operation.								X	X
23. Simulate underway conditions, performing all evolutions and operating all equipment.	X	X	X	X	X	X	X	X	X
24. Conduct exercises in casualties to missile tube breather valves to include flooding and introducing toxic gases in the missile compartment from gas generator.								X
25. Simulate boat transfer at sea.	X		X	X	X	X	X
26. Conduct competitive and non-competitive drills and exercises such as aircraft tracking and aircraft control.	X	X	X	X	X	X
27. Light-off main propulsion plant, shift to ship's power and run all engines with steam for a short period of time.	X	X	X	X	X	X	X	X	X
28. Man Towing/Salvage/Fueling Stations.	X	X	X	X	X	X	X
29. Set Flight Quarters as applicable.	X	X	X	X	X	X	X

APPENDIX C

LISTING OF TESTS TO BE PERFORMED DURING

NUCLEAR POWERED AIRCRAFT CARRIER BUILDER'S TRIALS

1.The following systems and components will be tested during Nuclear Powered Aircraft Carrier Builder's Trials:

a. Auxiliaries

Emergency Diesel Generators

O2N2 Plants (Forward and Aft)

Steering Gears

Motor Driven Fire Pumps and Eductors

Anchor Windlass

Stores Conveyors

Hot Water Heaters

HP Air Compressors

Ship Service and Control Air Compressors

Air Filter Cleaning

Air Conditioning/Refrigeration Systems

Turbine Generator and Diesel Generator (Load Transfer Operations)

b. Aviation

Aircraft Elevators 1, 2, 3, 4

Aircraft Starting and Servicing Power

Boat and Airplane Crane

Flight Deck Night Lighting

Arresting Gear

Aircraft Barricade

Jet Engine Test Facility

Elevator Doors and Hangar Bay Division Doors

Landing Officer's Console and Windscreen

Visual Landing Aid

Catapults (No Load Launching)

Jet Blast Deflectors

Integrated Catapult Control Stations

Hangar Bay Darken Ship Switches

JP-5 Filling, Transfer and Service System

c. Combat Systems

Upper Stage Weapons Elevators

Flight Deck Hatches

Magazine Sprinkling and Alarms

Lower Stage Weapons Elevator 7 Hatches

Inspect Masts

d. Damage Control

Halon Fire Protection System

Machinery Space and Pump Rooms 2 and 3 AFFF

Diesel Driven Portable Pumps

Aqueous Potassium Carbonate System

Miscellaneous Sprinkling Systems

Electrical Driven Portable Pumps

List Control Pumps

Magazine Sprinkling and Alarms Systems

CO2 Hose Reels

Hydraulically Operated Valves

Hangar Bay and Weapons Elevator AFFF

Turbine Driven Fire Pumps

e. Deck

Ship's Boats

Boat and Airplane Crane

Anchor Windlass

Sliding Padeyes

Replenishing-At-Sea Winches

Trash Burners

Mooring and Warping Capstans

Replenishing-At-Sea Support Legs

f. Electrical

Ship Service and Coolant Turbine Generators

Aircraft Elevators 1, 2, 3, 4

Emergency Diesel Generators

Aircraft Starting and Servicing Power

Steering Gear

Gyro-Compass Standby Power Supply

Anchor Windlass

Miscellaneous Alarms (Non-Navigational)

IC CKTs: BZ/JB, CX, DA, 1DL, 3DL, 4FD, 14FD

Degaussing System

General, Chemical and Collision Alarms From All Stations

Flight Deck Crash Alarms

Flight Deck Night Lighting

Navigation Lights

Hangar Bay Darken Ship Switches:

Turbine Generator and Diesel Generator Load Transfer Operations

Mooring and Warping Capstans

400 HZ MG Set Parallel Operations

g. Environmental Protection

Collection, Holding and Transfer (CHT) Dockside Pumping

CHT SYS - Switch To Holding Mode

CHT SYS - Switch To At-Sea Mode

CHT Valve Rooms 3 Thru 9 Valve Operations (4th Deck)

NOTE: All Scuppers Must Be Operated For CHT Certification

h. Main Propulsion

Ship Service and Coolant Turbine Generators

Power Operated Main Seawater Valves

Turbine Generator Backpressure Trips

Turbine Driven Pumps

Main Feed -1A, 1B, 1C, 2A, 2B, 2C

Main Circulating Water -1,2,3,4

Standby Lube Oil -1,2,3,4

Fire Pumps -7,9,11,13

Machinery Space Safety Devices:

1TM CKT

Guard Valves

Main Condenser Low Vacuum Temperature Alarm

DFT Level Alarm

Emergency Lube Oil Alarm

Turbine Generator Low Oil Pressure/High Bearing Temperature Alarm

Main Lube Oil Controls and Alarms

Reduction Gear Lube Oil Spray Pattern

Engine Order Telegraph

Distilling Units

Turbine Driven Fire Pumps (Conduct During Countermeasures Washdown)

Turbine Generator and Diesel Generator (Load Transfer Operations)

Brominators

Shaft Seals Including Inflatable Seals

i. Medical and Dental

Brominators

j. Navigation

Steering Gear

Engine Order Telegraph

Rudder Angle Indicating System

Gyro-Compass Standby Power Supply

General Announcing System

Bridge Announcing System

Ship's Whistles

Pelorus, Signal Lights and Big Eyes

Degaussing System

Visibility - Pilot House, Bridge and Lookout Stations

Navigation Lights

AN/SRN-25 Radio Navigation

AN/SRN-9 Satellite Navigation

AN/SPS-64 Navigation Radar

AN/WRN-6 GPS

Wind Direction

DRTs and DRAI

Magnetic Compass

AN/WSN-1 SINS

MK 19 Compass

k. Supply

Stores Conveyors

Laundry

Dumbwaiter

Bridge Crane

Scullery

APPENDIX D

LISTING OF TESTS TO BE

PERFORMED DURING INITIAL TIGHTNESS DIVE

1.The following tests and evolutions will be carried out on the surface en route to the test dive area and prior to the initial tightness dive:

a. Underway. Rig for dive (for Alpha Trial, rig for deep submergence is required for the initial dive). Compensate. Start-up evaporator.

b. Ship's Force instruct Sea Trial riders on the proper use of Emergency Air Breathing (EAB) masks.

c. Conduct operational test of rudder in normal and emergency modes.

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

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

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

g. Check operation of all radar. (See Note 1)

h. Check all radio transmitters, receivers and electronic equipment (see Notes 2 and 3).

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

j. Check Dead Reckoning Analyzer Indicator (DRAI), Dead Reckoning Analyzer (DRA), Dead Reckoning Tracers (DRT) and RPM indication.

k. Test fathometer(s) and compare with charted soundings.

l. Run ahead at full power long enough for temperatures to reach a stable value (see Note 4). After readings have stabilized, operate rudder through full throw in each direction in normal and emergency power. Time evolution and compare with design values. Check out hand modes.

m. Operate torpedo tube muzzle doors in hand and power (see Notes 5 and 6).

n. Ahead flank to back emergency.

o. Run astern up to full power (see Note 7) for 10 minutes or to meet the intent of a more restrictive Industrial Activity Test Form. Operate rudder through full throw in each direction in normal and emergency power (measure degrees per second travel and compare with design value).

p. Fire Control System operation (see Notes 2, 6 and 8).

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

r. Check operation of magazine/pyro locker flooding if not tested in industrial activity (see Notes 2 and 6).

s. Rendezvous with escort. Conduct radio and sonar communications checks (see Note 9).

t. Test all bottomside sonar.

u. Test bow/sail and stern plane operations in all modes.

v. Flood variable tanks to computed compensation.

w. Record megger readings of all antennas where meggering is permissible. (See Note 6)

x. Operate trim and drain pumps (see Note 10).

y. Test variable ballast system for proper operation.

z. Test low pressure, normal and EMBT blow systems if installed.

NOTE: CONDUCT REFERENCE (j), URO MRC 022, PARAGRAPH 1 AND 3 (DOCKSIDE OPERATION OF EMBT BLOW SYSTEM VALVES) DURING FAST CRUISE FOR THE TEST OF EMBT BLOW, VICE THE TEST OF THE EMBT BLOW SYSTEM PRIOR TO INITIAL DIVE ON ALPHA SEA TRIAL (INITIAL BUILDER'S SEA TRIAL).

aa. Operate on the Emergency Propulsion Motor (EPM) for 10 minutes. (See Note 6)

ab. Motor generator set operation. (See Note 6)

ac. Ventilate ship. (See Note 6)

ad. Start atmosphere control equipment.

ae. Additional requirements may be imposed at the discretion of the CO.

2. The following tests and evolutions will be carried out immediately prior to or during the initial tightness dive:

a. Obtain navigational fix and take sounding. Maximum depth of water is 400 feet as specified in reference (k).

b. Conduct a dive to periscope depth. Obtain speed trim, if practical, at periscope depth. If sea state requires deeper submergence, proceed slowly to 150 feet (160 feet for SSBN 726 Class) to obtain speed trim (see Note 11). Maximum keel depth shall be per Table 1 of Appendix F.

c. Check operation of ship control systems, including depth indication (see Note 12).

d. Shoot pyrotechnics from each ejector by hand and impulse methods, as applicable (see Notes 6, 13, and 14).

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 9).

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 6)

j. Test operation of trim and drain systems.

k. Check all sonar equipment on each hydrophone.

l. Comply with the Antisubmarine Warfare (ASW) Test Program regarding the shooting of waterslugs. This event is not required by the TYCOM if not required by the ASW Test Program (see Notes 6, 13, and 14).

m. Snorkel, test operation of stills and air compressors (see Note 2, 6, 14, and 15).

n. Operate all hull and back-up valves and equalize sea pressure on all systems designed for test depth (see Notes 14, 16 and 17).

o. Check hovering system (where applicable) (see Notes 2, 6 and 14).

p. Ensure air banks are charged to within 200 psi of full pressure.

q. Line up MBT blow system for maximum blow rate.

r. 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.

s. Additional requirements may be imposed at the discretion of the CO.

NOTES

Demonstrate accuracy by conducting simultaneous radar and visual plots.
Event is optional with regard to sequence. May be conducted at any time during the Sea Trial and is not a prerequisite to the deep dive. If listed with initial tightness dive events, completion is not mandatory prior to proceeding with the remainder of the trial.
Test all possible antenna combinations including emergency antennas and emergency radio equipment.
Log RPM, ship's speed, temperatures, pressures, etc. Refer to reference (g) regarding depth of water.
If the ASW Test Program does not specify ship's speed, conduct with ship at maximum ahead speed.
Evolution not required for PSA unless specific equipments/systems were worked or disturbed during PSA.
Full power run astern to be consistent with backing pressure limitations on plane/rudder rams and within turbine limitations.
As required by Underway Consolidated Operability Test, check target designation system alignment of sensors to bench marks and transmissions to receivers. Determine lost motion. Run test problems on the Position Keeper and angle solver, etc. (Conduct transmission checks to tubes.)
In the execution of any Sea Trial, whether escorted or not, submarine COs are reminded of their responsibility to communicate with escorts and/or shore authorities within prescribed, previously agreed upon time limits to avoid initiation of inadvertent lost contact or submarine disaster procedures.
Pumps should be tested in the industrial activity prior to Sea Trials, to determine that they can pump against a test depth head.
Use conservative angles and speed on initial dive.
Compare all depth and pressure gages; check operation of Automatic Depth Control and Automatic Course Control systems, check planes and rudder in all modes. Depth and pressure gages should be checked as soon as the next specified depth is reached.
Integrity of torpedo tubes and signal ejectors shall be established by admitting sea pressure through equalizing lines or flooding connection and the muzzle doors operated before conducting operational tests. Shoot waterslugs from torpedo tubes as required by the ASW Test Program down to ship/torpedo tube limiting depth, whichever is less. Shoot pyrotechnics from signal ejector on initial tightness dive and at test depth on the deep dive.
Those seawater systems which are not required for normal safe operation of the ship at test depth but which have been designed for and may be subjected to test depth pressure should not be subjected to submergence pressure during the initial dive to any specified depth (e.g., a blown sanitary tank). (See reference (i)).
Check operation of electrodes; head valve and each snorkel safety circuit. Demonstrate operation of air compressors and stills (if possible) while snorkeling.
Depth increments for cycling vital sea valves are as set forth in reference (i).
This evolution (initial operation of hull and back-up valves in fully submerged condition) at depths other than specified in reference (i) is intended for crew training and is not technically required. Evolution may be abbreviated or deleted on case basis with concurrence of the TYCOM Embarked Representative.

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APPENDIX E

ESCORT SHIP CAPABILITIES FOR SUBMARINE SEA TRIALS

1. Radio Communication:

a. Ability to transmit and receive on two Ultrahigh Frequency (UHF) and on High Frequency (HF) circuits simultaneously including 243.0 MHZ.

b. Equipped to tape record all non-secure radio transmissions between the submarine and the escort.

c. Capability to communicate on the submarine UHF/HF circuits.

2. Sonar and Sonar Communications:

a. Equipped with underwater telephone capable of communicating to the submarine's test depth.

b. Equipped with active and passive sonar.

c. Sufficient operators to man both underwater telephone and sonar on a continuous basis, including a Continuous Wave (CW) capable operator on call if the requirement for CW communication develops.

d. Equipped to tape record all transmissions between the submarine and the escort by underwater telephone.

e. Explosive charge signals called for by AXP-1.

f. Equipped with active and passive sonar capable of tracking the submarine in bearing and range.

3. Navigation:

a. Equipped with an operable LORAN C or more accurate equipment.

b. Equipped with an operable DRT.

c. Possess navigational capability to fix his position to two miles average accuracy.

d. Fathometer.

e. Gyrocompass.

f. Underwater log.

4. Sea keeping and speed:

a. Ability to remain at sea for one week in State 6 seas.

b. Be capable of making 12 knots. Escorts will keep the submarine informed of any speed or sea state limitations. In addition, if the escort has an unfaired WQC hydrophone, it shall notify the submarine of the maximum sea state and speed which will not restrict WQC communications. If the submarine requires a speed above this limit, the submarine should run a track about the escort within WQC range.

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APPENDIX F

LISTING OF TESTS TO BE

PERFORMED PRIOR TO, DURING AND

FOLLOWING FIRST DIVE TO TEST DEPTH

1. The following tests and evolutions, as summarized in Table 1 of this appendix, will be carried out following the initial tightness dive and prior to the deep dive:

a. Six hours of Independent Ship Exercise for crew training (see Note 1).

b. Charge air banks and battery if necessary. The ship may be submerged while charging air banks provided the depth of the ship does not exceed other guidelines in this instruction, or those of the flooding bill or ship's operating procedures.

c. Operate IFF and ESM equipment. If possible use aircraft (see Note 2).

2. The following tests and evolutions, as summarized in Table 1 of this appendix, will be carried out immediately prior to or during the first deep dive. Per Volume V of this manual, a second deep dive must be performed to complete valve cycling and operation of systems not required for normal safe operation of the ship, i.e., torpedo tubes, Trash Disposal Unit (TDU), hovering, plumbing (see Note 3).

a. Ensure that air banks are charged to within 200 psi of full pressure.

b. Ensure all MBT blow systems are fully operational and in a normal line up configuration.

c. Take sounding. Maximum water depth is given in reference (k). Accurately fix the ship's position within the specified dive area (reference (k)).

d. Conduct a dive to periscope depth. Obtain speed trim, if practical, at periscope depth. If sea state requires deeper submergence, proceed slowly to 150 feet (160 feet for SSBN 726 Class) to obtain speed trim (see Note 4).

e. Obtain stop trim. Take readings and water samples required to make a check of ballasting. Stop trim should be conducted at the most desirable time during the trials.

f. Trim ship to maintain neutral buoyancy (see Note 5).

g. Line up propulsion plant for maximum reliability in accordance with ship's instructions.

h. Rig ship for deep submergence. All systems should be in the maximum secure condition with unnecessary sea systems isolated (see Note 6).

i. Station personnel throughout the ship to inspect for leaks.

j. At depths specified in reference (i):

(1) Inspect for leaks.

(2) Adjust trim (see Note 5).

(3) Communicate with escort at each 100 feet depth increment or at 10 minute intervals, whichever is sooner. If communications are lost, return to depth at which communications can be reestablished before continuing (see Note 7).

k. At depths listed for hull valve cycling in reference (i) (as applicable) per NAVSEA approved Deep Dive Test Form:

(1) Check accuracy of gages and repeaters.

(2) Conduct operational test of signal ejectors (see Note 8).

(3) Check shaft bearings and stern tubes for excessive heating, leakage and noise. Sealol shaft seals must be tested at each depth and for the required time, as specified in the approved class test form.

(4) Cycle rudder and planes through full throw to check for binding (see Note 9).

(5) Operate all hull and back-up valves (using remote closures, as applicable, from flooding control stations) of seawater systems required to maintain propulsion and other functions vital to the ship's operation at increments of depth specified in reference (i). Required systems are listed in paragraph 4.b. of reference (i). Observe restrictions on operation of systems listed in paragraph 4.d. of reference (i).

(6) Check operation of bulkhead flappers and watertight doors for binding.

(7) Operate trim and drain pumps, discharging to sea.

(8) Conduct operational test of torpedo tubes (see Notes 3 and 8).

(9) Vent negative tank inboard (if installed) (see Notes 3 and 10).

(10) Cycle main vents to check for binding.

l. At maximum authorized operating depth:

(1) Repeat item 2.k.(1) of this appendix - Depth gages and repeaters.

(2) Operate each signal ejector by impulse and hand, as applicable (see Notes 3 and 8).

(3) Repeat item 2.k.(3) of this appendix - Shafting and bearings.

(4) Repeat item 2.k.(5) of this appendix - Hull and back-up valves.

(5) Repeat item 2.k.(6) of this appendix - Bulkhead flappers and watertight doors.

(6) Repeat item 2.k.(7) of this appendix - Trim and drain pumps.

(7) Repeat item 2.k.(8) of this appendix - Torpedo tubes (see Note 3).

(8) Repeat item 2.k.(9) of this appendix - Negative tank (if applicable).

(9) Equalize TDU with sea pressure through trim line. During conduct of the Deep Dive Test Form on new construction submarines, the TDU Hull Valve will be cycled at depths specified by reference (i) in order to meet material certification requirements (see Note 3).

(10) Equalize sea systems and cycle hull and back-up valves as specified in reference (i).

(11) Repeat item 2.k.(10) of this appendix - Cycle main vents and check for binding.

m. After each deep dive, surface fully with EMBT blow from the depth required per the NAVSEA approved EMBT Test Procedure and the approved Sea Trial Agenda. Check air bank pressures before and after blow.

n. Additional requirements may be imposed at the discretion of the CO.

3. The following tests and evolutions will be carried out submerged following the deep dive:

a. Steering and diving operation at full speed (see Notes 4 and 11).

b. Full power run (see Notes 11, 12 and 13).

c. Steep angles - operate the ship through several depth changes using large up and down angles to check operation of ship machinery (see Notes 11 and 14).

d. Time raising each periscope and mast at maximum depth and speed for which they were designed. Check training feature where applicable.

e. Run and observe air conditioning plants throughout trials. Operate the air conditioning plant to demonstrate ability to carry entire maximum existing ship's air conditioning load, or 100 percent capacity.

f. Run and observe refrigeration plant throughout trials.

g. Missile fire control erection performance tests (SSBN/Vertical Launch System (VLS) on SSN).

h. Missile fire control alignment (SSBN/VLS on SSN).

i. Missile tube muzzle hatch operation (SSBN/VLS on SSN).

j. Missile compensation system operation submerged (SSBN/VLS on SSN).

k. Launcher dead-load OP-sequence (SSBN) (see Note 15).

l. At sea OP-sequence (SSBN) (see Note 15).

m. Additional requirements may be imposed at the discretion of the CO.

n. Comply with the ASW Test Program regarding shooting of waterslugs and testing torpedo tubes (see Notes 3 and 8).

4. The following tests and evolutions will be carried out on the surface following the deep dive:

a. Note condition of periscope optics.

b. Measure resistance to ground of all external electrical cables.

c. Take radio antenna megger readings immediately after surfacing, again in one-half hour, and compare with readings obtained in Appendix D, step 1.w. of this chapter

d. With ship proceeding at full speed, conduct low pressure blow (if installed) to check whether or not circulation water systems and machinery become air bound.

e. Measure resistance, across and to ground from each side, of all sonar hydrophones, projectors and transducers (see Note 16).

TABLE 1. SUMMARY OF SIGNIFICANT UNDERWAY TRIAL REQUIREMENTS

	Initial Tightness Dive	Pre-Transit Valve Cycling (Optional)***	Transit	Deep Dive
Policy References	Appendix D, paragraph 2 of this chapter.	Appendix F, paragraph 1 of this chapter.	Appendix F, paragraph 1 of this chapter.	Appendix F, paragraph 2 of this chapter.
Start Depth	Surface	Surface to 200 ft.	Surface to 400 ft.	Surface to 400 ft.
Conduct Depth	Periscope depth or about 150 ft if sea state dictates for trim. Remaining events of Appendix D, paragraph 2 of this chapter no deeper than 200 ft.	Immediately upon finishing of initial tightness dive, valve cycling, IAW reference (q), may be conducted to a max depth of 400 ft.	Surface to 400 ft but not to exceed deepest depth previously escorted or valve cycling accomplished. Additional trials and testing permitted within the Independent Ship Exercise crew rest and other requirements of this instruction.	200 ft increments to one half Maximum Authorized Operating Depth, then 100 ft increments to Maximum Authorized Operating Depth.
Maximum Keel Depth	200 ft.	One half test depth.	One half test depth.	Maximum Authorized Operating Depth.
Finish Event	Surface from 200 ft with EMBT blow.*	Completion of valve cycling.	Rendezvous with escort.	Deep dive will be terminated with an EMBT blow from Maximum Authorized Operating Depth Appendix F section 2.
Escort Required	Yes**	Yes**	No	Yes**
Water Depth	400 ft per reference (k)	No deeper than water depth as specified in reference (k) for deep dive.	Unlimited.	Reference (k).

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.
* An escort is required on the initial tightness dive and on subsequent first dive to any deeper depths, i.e., the first dive to any depth requires an escort. EMBT blow escort requirements given in paragraph 4.4.3.c of this chapter.
** No post initial tightness dive evolution will be conducted at a depth deeper than a previous depth at which valve cycling in accordance with reference (i) has been accomplished.

NOTES

Each person involved in Sea Trials should be allowed a minimum of six hours of continuous, uninterrupted sleep during any 24 hour period encompassed by the Sea Trial.
Event is optional with regard to sequence. May be conducted at any time during Sea Trials and is not a prerequisite to the deep dive. If listed with initial tightness dive events, completion is not mandatory prior to proceeding with remainder of trials.
Those seawater systems which are not required for normal safe operation of the ship at test depth but which have been designed for and may be subjected to test depth pressure should not be subjected to submergence pressure during the initial dive to any specified depth (e.g., a blown sanitary tank). (See reference (i)).
At maximum safe speed, operate the rudder and planes through full throw in both directions in normal and emergency power. Time evolutions and check against design values.
Deep dive should be conducted using moderate speed and constantly adjusting trim at depths specified in reference (i) to maintain neutral buoyancy. Moderate speed shall be defined as that range of speed that allows the ship optimum recovery (as shown on recovery curves) if loss of stern plane control and/or flooding occurs (8-15 knots).
Reference (i) prescribes procedures for systems operation during deep dive.
In the execution of any Sea Trial, whether escorted or not, submarine COs are reminded of their responsibility to communicate with escorts and/or shore authorities within prescribed, previously agreed upon time limits to avoid initiation of inadvertent lost contact or submarine disaster procedures.
Integrity of torpedo tubes and signal ejectors shall be established by admitting sea pressure though equalizing lines or flooding connection and the muzzle doors operated before conducting operational tests. Shoot waterslugs from torpedo tubes as required by the ASW Test Program down to ship/torpedo tube limiting depth, whichever is less. Shoot pyrotechnics from signal ejector on initial tightness dive and at test depth on the deep dive.
Cycling of rudder and planes through full throws should be limited to test depth minus 100 feet.
Test to demonstrate the ability of the tank to withstand external pressure.
The required sequence of events is initial dive, deep dive, full power run submerged, then high speed maneuverability and steep angle tests. On initial propulsion plant trials for new construction nuclear powered submarines, the deep dive will be to test depth minus 300 feet unless otherwise approved by NAVSEA or the TYCOM and reflected in the Sea Trial Agenda.
Run full power submerged for at least two hours. COs may schedule the full power run for four hours if deemed necessary. Operate at minimum non-cavitating depth but not to exceed 400 feet. Water depth is not limited for this event.
Propulsion Plant Tests. The full power trial for new construction submarines will be in accordance with building specifications or directions from the Ship Program Manager. Submarine depth during the submerged full power trials should be limited to 400 feet. The submerged full power ahead test for commissioned nuclear powered submarines shall be terminated by a back emergency bell. The duration of the back emergency bell shall be limited to 45 seconds, to be followed immediately by an appropriate ahead bell. Caution must be exercised to avoid stern way.
Completion of full power, deep dives and EMBT Blow Test Forms are prerequisites for the high speed maneuverability and steep angle tests. Initial high speed ship control tests, steep angle tests and exercises of major casualties shall be conducted in water that does not exceed one and one-half times design test depth, which equates to collapse depth.
Test to determine the weapons system performance and operability under actual sea conditions while performing a tactical surfaced launch sequence and a submerged launching sequence including ripple firing.
The spherical array need not be done if an array purge or power into the array measurements are scheduled at a later date.

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