About - Strategic Systems Programs Chronology 1966 - 1976

September 1966 ~ 1975

2 February 1966

2 February 1966

USS GEORGE WASHINGTON (SSBN 598), the first submarine ever to carry POLARIS missiles on operational patrol, completed her initial overhaul. She has been refitted to carry the 2500 nautical mile range POLARIS (A3) missile.

1 April 1966

At this date, FBM program had as its objectives: completion of construction and launching of the last two SSBNs; completion of the overhauls to refit the first five SSBNs to carry POLARIS (A3) missiles; continued deployment of SSBNs on operational patrol in the Atlantic and Pacific Fleets; and proceeding with engineering development on the newest missile, POSEIDON (C3).

27 April 1966

USS SIMON BOLIVAR (SSBN 641) departed Charleston, SC, to go on operational patrol with 16 POLARIS (A3) missiles.


7 May 1966

USS BENJAMIN FRANKLIN (SSBN 640) departed Pearl Harbor, HI, to go on operational patrol with 16 POLARIS (A3) missiles.

9 May 1966

USS ETHAN ALLEN (SSBN 608), first SSBN designed from keel up as an FBM submarine, returned to the United States, completing her initial deployment. She was the first submarine to carry the longer range POLARIS (A2) missile.

20 May 1966

USS ETHAN ALLEN (SSBN 608) entered Newport News Shipbuilding and Drydock Company Shipyard, Newport News, VA, to begin her initial overhaul.

23 June 1966

USS LEWIS AND CLARK (SSBN 644) departed Charleston, SC, to go on operational patrol with 16 POLARIS (A3) missiles.

26 June 1966

USS CANOPUS (AS 34), last of five planned FBM tenders, deployed to the Cooper River anchorage to relieve USS HUNLEY (AS 33).

30 June 1966

USS GEORGE WASHINGTON (SSBN 598) departed Charleston, SC, to go on operational patrol with 16 POLARIS (A3) missiles.m

26 July 1966

USS GEORGE BANCROFT (SSBN 643) departed Charleston, SC, to go on operational patrol with 16 POLARIS (A3) missiles.

6 August 1966

USS KAMEHAMEHA (SSBN 642) departed Apra Harbor, Guam, to go on operational patrol with 16 POLARIS (A3) missiles.

14 October 1966

USS JAMES K. POLK (SSBN 645) departed Charleston, SC, to go on operational patrol with 16 POLARIS (A3) missiles.


25 October 1966

USS GEORGE C. MARSHALL (SSBN 654) departed Charleston, SC, to go on operational patrol with 16 POLARIS (A3) missiles.

1 November 1966

SecDef initiated a comprehensive study effort termed STRAT-X to examine future ballistic missile basing concepts and missile performance characteristics required to counter potential Soviet strategic offensive forces and ABM proliferation.

17 November 1966

The first in a series of improved POLARIS (A3) missiles was successfully launched from a land pad at Cape Kennedy, FL.

5 December 1966

USS ROBERT E. LEE (SSBN 601) departed Charleston, SC, to go on operational patrol with 16 POLARIS (A3) missiles.

12 December 1966

USS GEORGE WASHINGTON CARVER (SSBN 656) departed Charleston, SC, to go on operational patrol with 16 POLARIS (A3) missiles.

12 December 1966

First inert POSEIDON (C3) test vehicle launched from a land-based launcher (PEASHOOTER) at San Francisco Bay Naval Shipyard (Hunters Point Division), San Francisco, CA.

17 December 1966

SecDef approved production of POSEIDON (C3).

27 December 1966

USS PATRICK HENRY (SSBN 599) departed Charleston, SC, to go on operational patrol with 16 POLARIS (A3) missiles.

6 January 1967

An improved POLARIS (A3) missile was successfully launched from a land pad at Cape Kennedy, FL.

23 February 1967

USS HENRY L. STIMSON (SSBN 655) departed Charleston, SC, to go on operational patrol with 16 POLARIS (A3) missiles.

2 March 1967

An improved POLARIS (A3) missile was successfully launched from a land pad at Cape Kennedy, FL.

7 April 1967

First STV-4K POSEIDON special test vehicle was launched from PEASHOOTER and caught by a special crane (Skycatch).

3 June 1967

USS ABRAHAM LINCOLN (SSBN 602), last of the five SSBNs that carried POLARIS Al, completed her conversion to carry A3.

4 June 1967

USS FRANCIS SCOTT KEY (SSBN 657) departed Charleston, SC, to go on operational patrol with 16 POLARIS (A3) missiles.

11 June 1967

USS THEODORE ROOSEVELT (SSBN 600) departed Charleston, SC, to go on operational patrol with 16 POLARIS (A3) missiles.

5 July 1967

First full-scale firing of POSEIDON (C3) first-stage motor was statically launched at the Hercules, Inc., facilities at Magna, UT. Test was successful.

31 July 1967

USS MARIANO G. VALLEJO (SSBN 658) departed Pearl Harbor, HI, to go on operational patrol with 16 POLARIS (A3) missiles.

August 1967

STRAT-X study report promulgated.

12 September 1967

An improved POLARIS (A3) missile was successfully launched from a land pad at Cape Kennedy, FL. Powered flight only partially successful.

3 October 1967

USS WILL ROGERS (SSBN 659), last of the 41 authorized SSBNs, departed Charleston, SC, to go on operational patrol with 16 POLARIS (A3) missiles.

26 October 1967

USS ABRAHAM LINCOLN (SSBN 602) departed Charleston, SC, to go on operational patrol with 16 POLARIS (A3) missiles.

1 February 1968

Advanced development objective for an Undersea Long Range Missile System (ULMS) was established by the Chief of Naval Operations.

3 February 1968

First full-scale static firing of POSEIDON (C3) second-stage motor at the Hercules, Inc., facilities at Magna, UT. Test was successful.

15 February 1968

HMS RESOLUTION (SSBN 01), the Royal Navy’s first nuclear-powered submarine to be outfitted with the Polaris weapon system under the terms of the Polaris Sales Agreement, successfully launched a POLARIS (A3) missile down the Atlantic Missile Test Range while cruising submerged off Cape Kennedy, FL. (On 4 March, the Starboard Crew successfully launched a POLARIS (A3).) Purpose of the U.S. visit was final “shakedown” tests of her two crews and the weapon system before deploying for her first operational patrol.

12 March 1968

The Navy awarded the Lockheed Missiles and Space Company a $456.1 million cost-plusincentive fee contract for development and production of the POSEIDON missile system. The contract represents one of the first awards made by the Navy Department providing for total system development and production.

29 March 1968

USS ETHAN ALLEN (SSBN 608) deployed for operational patrol following overhaul.

11 April 1968

USS SAM HOUSTON (SSBN 609) deployed for operational patrol following overhaul.

1 July 1968

The last production-line POLARIS (A3) missile was turned over to the Navy by Lockheed Missiles and Space Company, prime contractor.

29 July 1968

Special Projects Office was officially redesignated the Strategic Systems Project Office to reflect additional responsibilities assigned by the Chief of Naval Operations for strategic offensive and defensive systems.

16 August 1968

The first test flight model of the POSEIDON missile (C3X-l) was successfully launched from a land pad at Cape Kennedy. Principal objective of the test was basic missile development. The POSEIDON is scheduled for deployment on 31 of the 41 FBM submarines.

29 August 1968

First submerged firing of an improved POLARIS (A3) missile from the USS DANIEL WEBSTER (SSBN 626). (The Gold Crew successfully launched two missiles.)

6 September 1968

USS JOHN MARSHALL (SSBN 611) deployed for operational patrol following overhaul.

22 September 1968

USS THOMAS A. EDISON (SSBN 610) deployed for operational patrol following overhaul.

29 October 1968

USS THOMAS JEFFERSON (SSBN 618) deployed for operational patrol following overhaul.

10 November 1968

USS ALEXANDER HAMILTON (SSBN 617) deployed for operational patrol following overhaul.

20 November 1968

USS FRANCIS SCOTT KEY (SSBN 657) returned to Charleston, SC, and thus marked the successful completion of the 600th deterrent patrol by units of the POLARIS submarine force, and the equivalent completion of l00 patrol years completely submerged. Since the initial patrol in November 1960, a total of 36,500 days of patrol vigilance have been successfully completed.

26 November 1968

POSEIDON (C3) developmental missile launched from Cape Kennedy, FL. This was the second in a series of concept test firings.

21 January 1969

Third POSEIDON (C3) developmental missile launched from Cape Kennedy, FL. A malfunction during first-stage powered flight of the test missile caused it to veer off course and it was destroyed by the Range Safety Officer.

3 February 1969

USS JAMES MADISON (SSBN 627), first of the Navy’s POLARIS missile submarines scheduled for conversion to POSEIDON missile capability, commenced overhaul and conversion at Electric Boat Division of General Dynamics, Groton, CT.

19 February 1969

Fourth POSEIDON (C3) test missile launched from Cape Kennedy, FL.

20 March 1969

Fifth POSEIDON (C3) test missile launched from Cape Kennedy, FL.

27 March 1969

HMS REPULSE (SSBN 03), Royal Navy nuclear powered submarine, successfully launched a POLARIS (A3) missile down the Atlantic Missile Test Range while submerged off Cape Kennedy, FL. (The Port Crew successfully launched a POLARIS (A3) missile on 14 April.)

5 April 1969

The 100th POLARIS patrol in the Pacific was completed when USS STONEWALL JACKSON (SSBN 634) returned to Apra Harbor, Guam.

9 April 1969

Sixth POSEIDON (C3) test missile launched from Cape Kennedy, FL.

1 May 1969

USS OBSERVATION ISLAND (EAG 154) completed overhaul and conversion to POSEIDON capability at the Norfolk Naval Shipyard, Norfolk, VA. Port Canaveral, FL, was assigned as home port.

12 May 1969

USS DANIEL BOONE (SSBN 629), second SSBN for conversion to a POSEIDON missile capability, commenced overhaul and conversion at Newport News Shipbuilding and Drydock Company, Newport News, VA.

18 May 1969

USS LAFAYETTE (SSBN 616) deployed for operational patrol following overhaul.

24 May 1969

Seventh POSEIDON (C3) test missile launched from Cape Kennedy, FL.

14 June 1969

Eighth POSEIDON (C3) missile launched from Cape Kennedy, FL.

9 July 1969

Ninth POSEIDON (C3) test missile launched from Cape Kennedy, FL.

11 July 1969

USS VON STEUBEN (SSBN 632), third SSBN for conversion to POSEIDON capability, commenced overhaul and conversion at Electric Boat Division of General Dynamics, Groton, CT.

4 August 1969

USS JOHN C. CALHOUN (SSBN 630), fourth SSBN for conversion to POSEIDON capability, commenced overhaul and conversion at Mare Island Naval Shipyard, Vallejo, CA.

21 August 1969

Tenth POSEIDON (C3) missile launched from Cape Kennedy, FL.

17 September 1969

Eleventh POSEIDON (C3) missile launched from Cape Kennedy, FL.

3 October 1969

USS ULYSSES S. GRANT (SSBN 631), fifth SSBN for conversion to POSEIDON capability, commenced overhaul and conversion at Puget Sound Naval Shipyard, Bremerton, WA.

4 October 1969

The Undersea Long Range Missile System (ULMS) program was established by the Chief of Naval Operations.

17 October 1969

Strategic Systems Project Office was relocated to new quarters in Building No. 3, Crystal Mall, 1931 Jefferson Davis Highway, Arlington, VA.

3 November 1969

Twelfth POSEIDON (C3) missile was launched from Cape Kennedy, FL.

10 November 1969

USS TECUMSEH (SSBN 628), sixth SSBN for conversion to POSEIDON capability, commenced overhaul and conversion at Newport News Shipbuilding and Drydock Company, Newport News, VA.

26 November 1969

Thirteenth flight test in the POSEIDON (C3 development program conducted at Cape Kennedy, FL.

16 December 1969

Fourteenth flight test of POSEIDON (C3) was conducted from the surface missile test-firing ship USS OBSERVATION ISLAND (EAG 154). This was the first operational missile tube launch and the first complete test of the POSEIDON weapons system, including the launcher, fire control, and missile subsystems.

24 December 1969

USS NATHAN HALE (SSBN 623) deployed for operational patrol following overhaul.

5 January 1970

USS WOODROW WILSON (SSBN 624) deployed for operational patrol following overhau.

5 January 1970

USS CASIMIR PULASKI (SSBN 633), seventh SSBN for conversion to POSEIDON capability, commenced overhaul and conversion at Electric Boat Division of General Dynamics, Groton, CT.

15 January 1970

USS ANDREW JACKSON (SSBN 619), the last POLARIS (A2) SSBN to redeploy following regular overhaul, deployed for operational patrol.

19 January 1970

USS SAM RAYBURN (SSBN 635), eighth SSBN for conversion to POSEIDON capability, commenced overhaul and conversion at Portsmouth Naval Shipyard, Portsmouth, NH. This was the last of the four authorized FY 70 conversions.

23 January 1970

Fifteenth POSEIDON (C3) missile launched from Cape Kennedy, FL.

3 February 1970

USS CANOPUS (AS 34) completed conversion to POSEIDON capability at the Puget Sound Naval Shipyard, Bremerton, WA. CANOPUS was the first FBM tender to undergo modification to support POSEIDON submarines.

4 February 1970

Sixteenth flight test in the POSEIDON (C3) development program and the second test from the USS OBSERVATION ISLAND (EAG 154).

25 February 1970

USS JOHN ADAMS (SSBN 620) deployed for operational patrol following overhaul.

3 March 1970

USS JAMES MONROE (SSBN 622) deployed for operational patrol following overhaul.

24 March 1970

Seventeenth flight test in the POSEIDON (C3) development program and the third from the USS OBSERVATION ISLAND (EAG 154).

26 March 1970

ULMS (Undersea Long-Range Missile System) Program Steering and Working Groups were established. The Steering Group was established to provide program guidance, a forum for program problems, and periodic evaluation of program progress. The Working Group was established to derive a list of key events, solve problems, monitor progress, and ensure continuous and effective communication.

30 April 1970

USS DANIEL WEBSTER (SSBN 626) deployed for operational patrol following overhaul.

14 May 1970

Eighteenth POSEIDON (C3) test missile launched from Cape Kennedy, FL.

28 May 1970

Resupply ship USNS MARSHFIELD (T-AK 282) completed conversion to FBM capability. MARSHFIELD, primarily a POSEIDON resupply ship, also had a capability for POLARIS (A2/A3).

17 June 1970

Nineteenth POSEIDON (C3) test missile launched from Cape Kennedy, FL.

28 June 1970

USS JAMES MADISON (SSBN 627), the lead ship in the POSEIDON conversion program, completed conversion to POSEIDON capability at Electric Boat Division of General Dynamics, Groton, CT.

29 June 1970

Twentieth POSEIDON (C3) test missile launched from Cape Kennedy, FL.

15 July 1970

USS STONEWALL JACKSON (SSBN 634), ninth SSBN for conversion to POSEIDON capability, commenced overhaul and conversion at Electric Boat Division of General Dynamics, Groton, CT.

17 July 1970

Exchange program to replace all POLARIS (A3P) missiles in the Atlantic Fleet with POLARIS (A3T) missiles was completed.

22 July 1970

USS NATHANAEL GREENE (SSBN 636), 10th SSBN for conversion to POSEIDON capability, commenced overhaul and conversion at Newport News Shipbuilding and Drydock Company, Newport News, VA.

3 August 1970

First submerged launch of a POSEIDON (C3) Production Evaluation Missile (PEM) successfully conducted from USS JAMES MADISON (SSBN 627). The firing was observed by a Russian ship, LAPTEV, whose crew was unsuccessful in attempts to recover closure plate segments from the water after launch of the missile.

17 August 1970

Second submerged launch of a POSEIDON (C3) PEM was successfully conducted from USS JAMES MADISON (SSBN 627).

October 1970

First POLARIS C3 successfully launched from USS JAMES MADISON (SSBN 627).


March 1971

First outload of POSEIDON missiles on station.


May 1972

1000th deterrent patrol completed by USS JOHN C. CALHOUN (SSBN 630).


September 1974

POLARIS A2 missiles retired from the fleet.

27 August 1970

Navigation Satellite 30190 was launched into Polar Orbit in support of the Navy Navigation Satellite System, thereby increasing the size of the four-satellite constellation to provide improved navigation satellite coverage.

31 August 1970

USS HENRY CLAY (SSBN 625) deployed for operational patrol following overhaul.

8 September 1970

Third submerged launch of a POSEIDON (C3) PEM was successfully conducted from USS DANIEL BOONE (SSBN 629).

21 September 1970

Fourth submerged launch of a POSEIDON (C3) PEM was successfully conducted from USS DANIEL BOONE (SSBN 629).

21 September 1970

POSEIDON (C3) development flight test program was concluded.

6 October 1970

Fifth submerged launch of a POSEIDON (C3) PEM was successfully conducted from USS JAMES MADISON (SSBN 627).

23 October 1970

POSEIDON DASO program commenced with the successful launch of a POSEIDON (C3) missile from the USS JAMES MADISON (SSBN 627).

19 November 1970

USS VON STEUBEN (SSBN 632) completed conversion to POSEIDON capability at Electric Boat Division of General Dynamics, Groton, CT.

27 November 1970

The Blue Crew of USS DANIEL BOONE (SSBN 629) successfully launched a POSEIDON (C3) missile in support of the ship’s Demonstration and Shakedown Operation.

16 December 1970

USS ULYSSES S. GRANT (SSBN 631) completed conversion to POSEIDON capability at Puget Sound Naval Shipyard, Bremerton, WA.

4 February 1971

The Blue Crew of USS VON STEUBEN (SSBN 632) successfully launched a POSEIDON (C3) missile in support of the ship’s Demonstration and Shakedown Operation.

15 February 1971

USS SIMON BOLIVAR (SSBN 641), 11th SSBN for conversion to POSEIDON capability, commenced overhaul and conversion at Newport News Shipbuilding and Drydock Company, Newport News, VA.

18 February 1971

USS TECUMSEH (SSBN 628) completed conversion to POSEIDON capability at Newport News Shipbuilding and Drydock Company, Newport News, VA.

22 February 1971

USS JOHN C. CALHOUN (SSBN 630) completed conversion to POSEIDON capability at Mare Island Naval Shipyard, Vallejo, CA.

25 February 1971

USS BENJAMIN FRANKLIN (SSBN 640), 12th SSBN for conversion to POSEIDON capability, commenced overhaul and conversion at Electric Boat Division of General Dynamics, Groton, CT.

9 March 1971

FBM tender USS SIMON LAKE (AS 33) completed conversion to POSEIDON capability at Puget Sound Naval Shipyard, Bremerton, WA.

15 March 1971

The Gold Crew of USS VON STEUBEN (SSBN 632) successfully launched a POSEIDON (C3) missile in support of the ship’s Demonstration and Shakedown Operation.

29 March 1971

The Gold Crew of USS ULYSSES S. GRANT (SSBN 631) successfully launched a POSEIDON (C3) missile in support of the ship’s Demonstration and Shakedown Operation.

31 March 1971

USS JAMES MADISON (SSBN 627) deployed from Charleston, SC, for operational patrol with 16 tactical POSEIDON (C3) missiles. MADlSON’s deployment introduced the POSEIDON missile into the nation’s arsenal of operational deterrent weapons and brought to successful fruition the development program announced in January 1965 for a successor weapon system to POLARIS. POSEIDON incorporated substantial improvements in accuracy and resistance to countermeasures over previous generations of missiles, but its principal advantage was its flexibility, which provided a capacity for delivery of multiple warheads, widely spaced, on separate targets over a variety of target footprints.

31 March 1971

The ULMS Project Manager (PM-2) was established under the Chief of Naval Material.

19 April 1971

The Blue Crew of USS JOHN C. CALHOUN (SSBN 630) successfully launched a POSEIDON (C3) missile in support of the ship’s Demonstration and Shakedown Operation.

28 April 1971

USS GEORGE BANCROFT (SSBN 643), 13th SSBN for conversion to POSEIDON capability, commenced overhaul and conversion at Portsmouth Naval Shipyard, Portsmouth, NH.

30 April 1971

The Blue Crew of USS TECUMSEH (SSBN 628) successfully launched a POSEIDON (C3) missile in support of the ship’s Demonstration and Shakedown Operation.

30 April 1971

USS CASIMIR PULASKI (SSBN 633) completed conversion to POSEIDON capability at Electric Boat Division of General Dynamics, Groton, CT.

30 April 1971

USS LEWIS AND CLARK (SSBN 644), 14th SSBN for conversion to POSEIDON capability, commenced overhaul and conversion at Puget Sound Naval Shipyard, Bremerton, WA.

10 May 1971

The initial POSEIDON patrol was successfully completed with the arrival of USS JAMES MADISON (SSBN 627) alongside the tender CANOPUS (AS 34) at Holy Loch, Scotland, for a refit period.

11 May 1971

The Blue Crew of USS ULYSSES S. GRANT (SSBN 631) successfully launched two POSEIDON (C3) missiles during Demonstration and Shakedown Operation.

15 May 1971

FBM resupply ship, USNS VICTORIA (T-AK 28l), completed conversion to POSEIDON capability at Norfolk Naval Shipyard, Norfolk, VA. T-AK 281 was the second resupply ship modified to support POSEIDON (C3) SSBNs in addition to her (A2/A3) capability.

21 May 1971

USS VON STEUBEN (SSBN 632) deployed for operational patrol following POSEIDON conversion.

7 June 1971

The Gold Crew of USS JOHN C. CALHOUN (SSBN 630) successfully launched a POSEIDON (C3) missile in support of the ship’s Demonstration and Shakedown Operation.

8 June 1971

The first Integrated Data Acquisition System (IDAS) M-35 production set was installed on board USS CASIMIR PULASKI (SSBN 633). IDAS installation was planned for all SSBNs.

2 July 1971

The Blue Crew of USS CASIMIR PULASKI (SSBN 633) successfully launched a POSEIDON (C3) missile in support of the ship’s Demonstration and Shakedown Operation.

11 July 1971

USS ULYSSES S. GRANT (SSBN 631) deployed for operational patrol following POSEIDON conversion.

15 July 1971

USS KAMEHAMEHA (SSBN 642), 15th SSBN for conversion to POSEIDON capability, commenced overhaul and conversion at Electric Boat Division of General Dynamics, Groton, CT.

16 July 1971

USS JAMES K. POLK (SSBN 645), 16th SSBN for conversion to POSEIDON capability, commenced overhaul and conversion at Newport News Shipbuilding and Drydock Company, Newport News, VA.

17 July 1971

The Gold Crew of USS TECUMSEH (SSBN 628) successfully launched a POSEIDON (C3) missile, completing the ship’s Demonstration and Shakedown Operation.

1 August 1971

USS SIMON LAKE (AS 33) departed to the Cooper River, SC, tender refit site.

16 August 1971

The Gold Crew of USS CASIMIR PULASKI (SSBN 633) successfully launched a POSEIDON (C3) missile, completing the ship’s Demonstration and Shakedown Operation.

27 August 1971

The Navy Navigation Satellite System completed the first full year of continuous service to the fleet from a five-satellite constellation.

2 September 1971

USS SAM RAYBURN (SSBN 635) completed conversion to POSEIDON capability at Portsmouth Naval Shipyard, Portsmouth, NH.

15 September 1971

USS GEORGE C. MARSHALL (SSBN 654), 17th SSBN for conversion to POSEIDON capability, commenced overhaul and conversion at Puget Sound Naval Shipyard, Bremerton, WA.

16 September 1971

USS JOHN C. CALHOUN (SSBN 630) deployed for operational patrol following POSEIDON conversion.

21 September 1971

USS NATHANAEL GREENE (SSBN 636) completed conversion to POSEIDON capability at Newport News Shipbuilding and Drydock Company, Newport News, VA.

22 September 1971

USS TECUMSEH (SSBN 628) deployed for operational patrol following POSEIDON conversion.

14 October 1971

The Blue Crew of USS SAM RAYBURN (SSBN 635) successfully launched a POSEIDON (C3) missile in support of the ship’s Demonstration and Shakedown Operation.

21 October 1971

Range Instrumentation Ship USNS RANGE SENTINEL (T-AGM 22) completed POSEIDON conversion at Northwest Marine Iron Works, Portland, OR. Her primary mission was to support POSEIDON (C3) operational tests/follow-on operational tests.

28 October 1971

USS CASIMIR PULASKI (SSBN 633) deployed for operational patrol following POSEIDON conversion.

29 October 1971

USS STONEWALL JACKSON (SSBN 634) completed conversion to POSEIDON capability at Electric Boat Division of General Dynamics, Groton, CT.

4 November 1971

The Blue Crew of USS NATHANAEL GREENE (SSBN 636) successfully launched a POSEIDON (C3) missile in support of the ship’s Demonstration and Shakedown Operation. This was the first surface launch of a POSEIDON missile from an SSBN.

12 November 1971

USS GEORGE WASHINGTON CARVER (SSBN 656), 18th SSBN for conversion to POSEIDON capability, commenced overhaul and conversion at Electric Boat Division of General Dynamics, Groton, CT.

15 November 1971

USS HENRY L. STIMSON (SSBN 655), 19th SSBN for conversion to POSEIDON capability, commenced overhaul and conversion at Newport News Shipbuilding and Drydock Company, Newport News, VA.

19 November 1971

Since the Navy Navigation Satellite System was declared operational in 1968, 10,000 successful injections had been achieved.

24 November 1971

The Gold Crew of USS SAM RAYBURN (SSBN 635) successfully launched a POSEIDON (C3) missile, completing the ship’s Demonstration and Shakedown Operation.

December 1971

Undersea Long Range Missile development contract awarded.

6 December 1971

The Blue Crew of USS STONEWALL JACKSON (SSBN 634) successfully launched a POSEIDON (C3) missile in support of the ship’s Demonstration and Shakedown Operation.

17 December 1971

The Gold Crew of USS NATHANAEL GREENE (SSBN 636) successfully launched a POSEIDON (C3) missile, completing the ship’s Demonstration and Shakedown Operation.

21 January 1972

The Gold Crew of USS STONEWALL JACKSON (SSBN 636) successfully launched a POSEIDON (C3) missile, completing the ship’s Demonstration and Shakedown Operation.

4 February 1972

USS GEORGE WASHINGTON (SSBN 598) Gold Crew successfully launched a POLARIS (A3T) missile, completing the ship’s Demonstration and Shakedown Operation, while cruising submerged off Cape Kennedy, FL. This was the first flight test of a first-stage motor incorporating a SPALT designed to eliminate anomalies attributed to forward head separation. This was the first DASO firing following second overhaul.

20 February 1972

USS FRANCIS SCOTT KEY (SSBN 657), 20th SSBN for conversion to POSEIDON capability, commenced overhaul and conversion at Puget Sound Naval Shipyard, Bremerton, WA.

7 March 1972

USS SAM RAYBURN (SSBN 635) deployed for operational patrol following POSEIDON conversion.

26 March 1972

USS NATHANAEL GREENE (SSBN 636) deployed for operational patrol following POSEIDON conversion.

1 April 1972

The exchange program to replace all POLARIS (A3P) missiles in the Pacific Fleet with POLARIS (A3T) missiles was completed.

24 April 1972

The Blue Crew of USS PATRICK HENRY (SSBN 599) successfully launched a POLARIS (A3T) missile in support of the ship’s Demonstration and Shakedown Operation.

26 April 1972

USS STONEWALL JACKSON (SSBN 634) deployed for operational patrol following POSEIDON conversion.

May 1972

Accuracy ULMS technical program planning phase completed.

12 May 1972

USS SIMON BOLIVAR (SSBN 64l) completed conversion to POSEIDON capability at Newport News Shipbuilding and Drydock Company, Newport News, VA.

15 May 1972

USS BENJAMIN FRANKLIN (SSBN 640) completed conversion to POSEIDON capability at Electric Boat Division of General Dynamics, Groton, CT.

15 May 1972

FBM resupply ship USNS NORWALK (T-AK 279) completed a scheduled yard availability at Norfolk Naval Shipyard, Norfolk, VA. NORWALK was the third resupply ship to be converted to provide support capability for POSEIDON (C3) missiles in addition to her POLARIS (A2/A3) capability.

16 May 1972

With the return of USS JOHN C. CALHOUN (SSBN 630) from POSEIDON patrol at Holy Loch, Scotland, a total of 1000 POLARIS/POSEIDON deterrent patrols had been successfully completed (975 POLARIS/25 POSEIDON).

16 May 1972

SecDef approved the proposal by SecNav to rename the ULMS program the TRIDENT program.

16 June 1972

The Blue Crew of USS BENJAMIN FRANKLIN (SSBN 640) successfully launched a POSEIDON (C3) missile in support of the ship’s Demonstration and Shakedown Operation.

16 June 1972

Modifications to the New London FBM training facility to accommodate POSEIDON Mk 88 Mod 1 fire control training were completed. The facility was able to provide FBM POSEIDON off-crew refresher training.

25 June 1972

USS GEORGE WASHINGTON (SSBN 598) deployed for operational patrol following POLARIS overhaul.

28 June 1972

Modifications of the FBM weapon system laboratories at the Naval Guided Missile School, Dam Neck, VA, were completed. The facility was ready to accommodate POSEIDON Mk 88 Mod 1 fire control training.

5 July 1972

The Blue Crew of USS SIMON BOLIVAR (SSBN 641) successfully launched a POSEIDON (C3) missile in support of the ship’s Demonstration and Shakedown Operation.

15 July 1972

USS PATRICK HENRY (SSBN 599) deployed for operational patrol following POLARIS overhaul.

21 July 1972

USS LEWIS AND CLARK (SSBN 644) completed conversion to POSEIDON capability at Puget Sound Naval Shipyard, Bremerton, WA.

25 July 1972

The first satellite in the TRANSIT Improvement Program was completed.

28 July 1972

The first SSBN 627 Class POSEIDON Mk 88 Mod 1 fire control tenderside conversion was completed and checked out on USS SAM RAYBURN (SSBN 635) at Holy Loch, Scotland.

31 July 1972

USS GEORGE BANCROFT (SSBN 643) completed conversion to POSEIDON capability at Portsmouth Naval Shipyard, Portsmouth, NH.

18 August 1972

The POSEIDON OT program commenced with the successful launch of four POSEIDON (C3) missiles by the Blue Crew of USS ULYSSES S. GRANT (SSBN 631). The tests were supported by the Range Instrumentation Ship USNS RANGE SENTINEL (T-AGM 22).

21 August 1972

USS MARIANO G. VALLEJO (SSBN 658), 21st SSBN for conversion to POSEIDON capability, commenced overhaul and conversion at Newport News Shipbuilding and Drydock Company, Newport News, VA.

2 September 1972

The first spacecraft of an improved Navy Navigation Satellite (TIP) series was successfully launched from Vandenberg Air Force Base.

25 September 1972

The Blue Crew of USS GEORGE BANCROFT (SSBN 643) successfully launched a POSEIDON (C3) missile in support of the ship’s Demonstration and Shakedown Operation.

27 September 1972

Arrival of USS JOHN MARSHALL (SSBN 611) at Rota, Spain, for refit marked the successful completion of the 1000th POLARIS deterrent patrol since the POLARIS weapon system was initially deployed on USS GEORGE WASHINGTON (SSBN 598) 15 November 1960.

28 September 1972

The Gold Crew of USS VON STEUBEN (SSBN 632) successfully launched four POSEIDON (C3) missiles during the second POSEIDON Operational Test.

29 September 1972

The FBM weapon system test ship USS OBSERVATION ISLAND (EAG 154) was decommissioned. The ship had supported various FBM missions since 1958.

5 October 1972

The Blue Crew of USS ROBERT E. LEE (SSBN 601) successfully launched a POLARIS (A3T) missile in support of the ship’s Demonstration and Shakedown Operation.

10 October 1972

USS WILL ROGERS (SSBN 659), 22nd SSBN for conversion to POSEIDON capability, commenced overhaul and conversion at Portsmouth Naval Shipyard, Portsmouth, NH.

15 October 1972

USS LAFAYETTE (SSBN 616), 23rd SSBN for conversion to POSEIDON capability, commenced overhaul and conversion at Electric Boat Division of General Dynamics, Groton, CT.

27 October 1972

USS KAMEHAMEHA (SSBN 642) completed conversion to POSEIDON capability at Electric Boat Division of General Dynamics, Groton, CT.

2 November 1972

The Blue Crew of USS JOHN C. CALHOUN (SSBN 630) launched four POSEIDON (C3) missiles during the third POSEIDON Operational Test.

16 November 1972

USS SIMON BOLIVAR (SSBN 641) deployed for operational patrol following POSEIDON conversion.

17 November 1972

USS JAMES K. POLK (SSBN 645) completed conversion to POSEIDON capability at Newport News Shipbuilding and Drydock Company, Newport News, VA.

1 December 1972

USS BENJAMIN FRANKLIN (SSBN 640) deployed for operational patrol following POSEIDON conversion.

14 December 1972

The President approved TRIDENT for inclusion in BRICKBAT priority of the Master Urgency List. This is the highest industrial priority for defense projects.

15 December 1972

The Blue Crew of USS KAMEHAMEHA (SSBN 642) successfully launched one POSEIDON (C3) missile in support of the ship’s Demonstration and Shakedown Operation.

17 December 1972

The Blue Crew of USS DANIEL BOONE (SSBN 629) successfully launched four POSEIDON (C3) missiles in the fourthPOSEIDON Operational Test.

18 December 1972

The Gold Crew of USS LEWIS AND CLARK (SSBN 644) successfully launched one POSEIDON (C3) missile in support of the ship’s Demonstration and Shakedown Operation.

13 January 1973

The Blue Crew of USS JAMES K. POLK (SSBN 645) successfully launched one POSEIDON (C3) missile in support of the ship’s Demonstration and Shakedown Operation.

15 January 1973

USS ALEXANDER HAMILTON (SSBN 617), 24th SSBN for conversion to POSEIDON capability, commenced overhaul and conversion at Newport News Shipbuilding and Drydock Company, Newport News, VA.

16 January 1973

USS ROBERT E. LEE (SSBN 601) deployed for operational patrol following POLARIS overhaul.

24 January 1973

The Gold Crew of USS TECUMSEH (SSBN 628) launched four POSEIDON (C3) missiles during the fifth POSEIDON Operational Test.

30 January 1973

FBM tender USS PROTEUS (AS 19) relieved USS HUNLEY (AS 31), retaining POLARIS (A3) SSBN support capability at the Guam tender site.

8 February 1973

USS GEORGE C. MARSHALL (SSBN 654) completed conversion to POSEIDON capability at Puget Sound Naval Shipyard, Bremerton, WA.

16 February 1973

SecNav announced selection of Bangor, WA, as the initial base for TRIDENT operations.

18 February 1973

USS GEORGE BANCROFT (SSBN 643) deployed for operational patrol following POSEIDON conversion.\

2 March 1973

The Gold Crew of USS CASIMIR PULASKI (SSBN 633) launched four POSEIDON (C3) missiles during the sixthPOSEIDON Operational Test.

15 March 1973

USS ANDREW JACKSON (SSBN 619), 25th SSBN for conversion to POSEIDON capability, commenced overhaul and conversion at Electric Boat Division of General Dynamics, Groton, CT.

22 March 1973

USS HENRY L. STIMSON (SSBN 655) completed conversion to POSEIDON capability at Newport News Shipbuilding and Drydock Company, Newport News, VA.

2 April 1973

FBM tender USS HUNLEY (AS 31), the third tender to be provided with POSEIDON capability, commenced yard availability at Puget Sound Naval Shipyard, Bremerton, WA.

7 April 1973

USS GEORGE WASHINGTON CARVER (SSBN 656) completed conversion to POSEIDON capability at Electric Boat Division of General Dynamics, Groton, CT.

8 April 1973

USS LEWIS AND CLARK (SSBN 644) deployed for operational patrol following POSEIDON conversion.

9 May 1973

The Blue Crew of USS HENRY L. STIMSON (SSBN 655) successfully launched a POSEIDON (C3) missile in support of the ship’s Demonstration and Shakedown Operation.

17 May 1973

USS FRANCIS SCOTT KEY (SSBN 657) completed conversion to POSEIDON capability at Puget Sound Naval Shipyard, Bremerton, WA.

19 May 1973

The Blue Crew of USS GEORGE WASHINGTON CARVER (SSBN 656) successfully launched a POSEIDON (C3) missile in support of the ship’s Demonstration and Shakedown Operation.

22 May 1973

The return of USS NATHANAEL GREENE (SSBN 636) from POSEIDON patrol marked the completion of 1100 POLARIS/POSEIDON deterrent patrols (1027 POLARIS/73 POSEIDON). This equated to approximately 181 years of submerged alert deterrence since deployment of the first POLARIS submarine, USS GEORGE WASHINGTON (SSBN 598), 15 November 1960.

29 May 1973

USS JAMES K. POLK (SSBN 645) deployed for operational patrol following POSEIDON conversion.

9 June 1973

USS KAMEHAMEHA (SSBN 642) deployed for operational patrol following POSEIDON conversion.

15 June 1973

USS NATHAN HALE (SSBN 623), 26th SSBN for conversion to POSEIDION capability, commenced overhaul and conversion at Puget Sound Naval Shipyard, Bremerton, WA.

10 August 1973

The POLARIS (A3) missile was phased out in the Atlantic when USS ROBERT E. LEE (SSBN 601) transferred to the Pacific Fleet.

20 August 1973

USS THOMAS A. EDISON (SSBN 610) commenced overhaul at Mare Island Naval Shipyard, Vallejo, CA.

2 September 1973

USS GEORGE C. MARSHALL (SSBN 654) deployed for operational patrol following POSEIDON conversion.

15 September 1973

The Gold Crew of USS FRANCIS SCOTT KEY (SSBN 657) successfully launched a POSEIDON (C3) missile during Demonstration and Shakedown Operation.

26 September 1973

USS HENRY L. STIMSON (SSBN 655) deployed for operational patrol following POSEIDON conversion.

1 October 1973

USS WOODROW WILSON (SSBN 624), 27th SSBN for conversion to POSEIDON capability, commenced overhaul and conversion at Newport News Shipbuilding and Drydock Company, Newport News, VA.

12 October 1973

USS GEORGE WASHINGTON CARVER (SSBN 656) deployed for operational patrol following POSEIDON conversion.

15 November 1973

The President signed the FY 74 Appropriations Authorization Act providing funds for the first TRIDENT submarine.

10 December 1973

USS FRANCIS SCOTT KEY (SSBN 657) deployed for operational patrol following POSEIDON conversion.

19 December 1973

USS MARIANO G. VALLEJO (SSBN 658) completed POSEIDON conversion at Newport News Shipbuilding and Drydock Company, Newport News, VA.

22 January 1974

FBM tender USS HUNLEY (AS 31) completed conversion to POSEIDON capability at Puget Sound Naval Shipyard, Bremerton, WA.

1 February 1974

USS JOHN ADAMS (SSBN 620), 28th SSBN for conversion to POSEIDON capability, commenced overhaul and conversion at Portsmouth Naval Shipyard, Portsmouth, NH.

6 February 1974

USS GEORGE WASHINGTON (SSBN 598) successfully launched five POLARIS (A3T) missiles during a Follow-on Operational Test.

8 February 1974

USS WILL ROGERS (SSBN 659) completed conversion to POSEIDON capability at Portsmouth Naval Shipyard, Portsmouth, NH.

6 March 1974

The first flight in support of the C4 Mk 4 Supplemental Flight Test (SFT-01) Program was conducted from Vandenberg Air Force Base.

7 March 1974

USS ABRAHAM LINCOLN (SSBN 602) completed overhaul at Mare Island Naval Shipyard, Vallejo, CA.

14 March 1974

TRIDENT I (C4) technical program approval was granted.

14 March 1974

USS ETHAN ALLEN (SSBN 608) completed overhaul at Puget Sound Naval Shipyard, Bremerton, WA.

30 March 1974

USS THEODORE ROOSEVELT (SSBN 600) completed overhaul at Charleston Naval Shipyard, Charleston, SC.

12 April 1974

The Gold Crew of USS MARIANO G. VALLEJO (SSBN 658) successfully launched a POSEIDON (C3) missile in support of the ship’s Demonstration and Shakedown Operation.

1 May 1974

The second flight in the C4 Mk 4 Supplemental Flight Test (SFT-02) Program was conducted from Vandenberg Air Force Base.

15 May 1974

The Gold Crew of USS WILL ROGERS (SSBN 659) successfully launched two POSEIDON (C3) missiles in support of the ship’s Demonstration and Shakedown Operation.

31 May 1974

The Blue Crew of USS THEODORE ROOSEVELT (SSBN 600) successfully launched a POLARIS (A3T) missile in support of the ship’s Demonstration and Shakedown Operation.

9 June 1974

USS PATRICK HENRY (SSBN 599) successfully launched five POLARIS (A3T) missiles during a Follow-on Operational Test.

9 June 1974

USS JOHN MARSHALL (SSBN 611) completed her final POLARIS (A2) operational patrol prior to overhaul. With the completion of MARSHALL’s final patrol, all eight POLARIS (A2) missile-carrying submarines were off-line for overhaul and conversion, and the A2 missile was phased out of operational use.

28 June 1974

The third flight in support of the C4 Mk 4 Supplemental Flight Test (SFT-03) Program was conducted from Vandenberg Air Force Base.

1 July 1974

USS THOMAS JEFFERSON (SSBN 618) commenced overhaul at Mare Island Naval Shipyard, Vallejo, CA.

12 July 1974

USS MARIANO G. VALLEJO (SSBN 658) deployed for operational patrol following POSEIDON conversion.

25 July 1974

The Navy awarded a fixed-price incentive contract to Electric Boat Division of General Dynamics, Groton, CT, for the construction of the first TRIDENT submarine. The contract included an option for construction of three additional TRIDENT submarines.

26 July 1974

The Gold Crew of USS ABRAHAM LINCOLN (SSBN 602) successfully launched a POLARIS (A3T) missile in support of the ship’s Demonstration and Shakedown Operation.

16 August 1974

USS ABRAHAM LINCOLN (SSBN 602) deployed for operational patrol following POLARIS overhaul.

19 August 1974

OSDP contract awarded to LMSC for missile system development plus the production of the first missiles, including reentry body shells. The contract provided for support equipment and technical services to outfit and support operation of TRIDENT I and backfit submarines, SWFPAC, POMFLANT, and training facilities.

27 August 1974

The Gold Crew of USS THEODORE ROOSEVELT (SSBN 600) successfully launched a POLARIS (A3T) missile in support of the ship’s Demonstration and Shakedown Operation.

29 August 1974

USS ETHAN ALLEN (SSBN 608) deployed for operational patrol following POLARIS overhaul.

3 September 1974

FBM tender USS HOLLAND (AS 32) commenced conversion to POSEIDON capability at Puget Sound Naval Shipyard, Bremerton, WA.

22 September 1974

USS WILL ROGERS (SSBN 659) deployed for operational patrol following POSEIDON conversion.

15 October 1974

USS ROBERT E. LEE (SSBN 601) successfully launched five POLARIS (A3T) missiles during a Follow-on Operational Test.

22 October 1974

The Blue Crew of USS WILL ROGERS (SSBN 659) successfully launched four POSEIDON (C3) missiles during an Operational Test.

28 October 1974

USS THEODORE ROOSEVELT (SSBN 600) deployed for operational patrol following POLARIS overhaul.

1 November 1974

USS JOHN MARSHALL (SSBN 611) commenced overhaul at Mare Island Naval Shipyard, Vallejo, CA.

7 November 1974

USS LAFAYETTE (SSBN 616) completed conversion to POSEIDON capability at Electric Boat Division of General Dynamics, Groton, CT.

9 Novmeber 1974

The first SSBN Extended Refit Period (ERP) was completed at the Holy Loch tender refit site on USS JAMES MADISON (SSBN 627). The extended SSBN upkeep concept, a 60-day period, spaced at 4 and 7-1/2 years, allowed accomplishment of preventive/corrective maintenance not possible during a normal 32-day upkeep.

22 November 1974

The Gold Crew of USS MARIANO G. VALLEJO (SSBN 658) successfully launched four POSEIDON (C3) missiles in the eighth Operational Test.

30 Novebmer 1974

USS THOMAS A. EDISON (SSBN 610) completed overhaul at Mare Island Naval Shipyard, Vallejo, CA.

11 December 1974

USS COMPASS ISLAND (EAG 153) completed overhaul at Bethlehem Steel Corporation, Hoboken, NJ.

16 December 1974

The Blue Crew of USS LAFAYETTE (SSBN 616) successfully launched a POSEIDON (C3) missile in support of the ship’s Demonstration and Shakedown Operation.

10 January 1975

SecDef approved the Navy's recommendation of full production go-ahead of TRIDENT submarines.

15 January 1975

USS JAMES MONROE (SSBN 622), 29th SSBN for conversion to POSEIDON capability, commenced overhaul and conversion at Newport News Shipbuilding and Drydock Company, Newport News, VA.

19 January 1975

The fourth flight in support of the C4 Mk 4 Supplemental Flight Test (SFT-04) Program was conducted from Vandenberg Air Force Base.

28 February 1975

The Navy exercised the contract option for construction of the second and third TRIDENT submarines.

6 March 1975

The first Supplemental Flight Test of the advanced development Mk 500 Evader reentry body was conducted from Vandenberg Air Force Base.

7 March 1975

USS SAM HOUSTON (SSBN 609) completed overhaul at Charleston Naval Shipyard, Charleston, SC.

5 April 1975

The Dining Car Underground Test was conducted at the Nevada Test Site.

11 April 1975

USS ALEXANDER HAMILTON (SSBN 617) completed conversion to POSEIDON capability at Newport News Shipbuilding and Drydock Company, Newport News, VA.

12 April 1975

The Blue Crew of USS THOMAS A. EDISON (SSBN 610) successfully launched a POLARIS (A3T) missile in support of the ship’s Demonstration and Shakedown Operation.

18 April 1975

USS JAMES K. POLK (SSBN 645) successfully launched two POSEIDON (C3) missiles during an Operational Test.

26 April 1975

The Blue Crew of USS SAM HOUSTON (SSBN 609) successfully launched a POLARIS (A3T) missile in support of the ship’s Demonstration and Shakedown Operation.

1975

TRIDENT I (C4) missile development started and TRIDENT submarine under construction.


May 1975

One of many advanced development flights successfully demonstrating the Mk 500 Evader reentry system.
Traces of two TRIDENT I (C4) ballistic missile reentry vehicles.
 

29 April 1975

USS HENRY CLAY (SSBN 625), 30th SSBN for conversion to POSEIDON capability, commenced overhaul and conversion at Portsmouth Naval Shipyard, Portsmouth, NH.

9 May 1975

The second Supplemental Flight Test of the advanced development Mk 500 Evader reentry body was conducted from Vandenberg Air Force Base.

28 May 1975

The Blue Crew of USS ALEXANDER HAMILTON (SSBN 617) successfully launched two POSEIDON (C3) missiles in support of the ship’s Demonstration and Shakedown Operation.

5 June 1975

A study of an FBM contingency site for the Rota Squadron was directed by CNO. SSPO was designated as lead activity for site evaluation, NAVFAC as lead for site preparation, and CINCLANTFLT as lead for relocation and activity planning.

18 June 1975

USS ABRAHAM LINCOLN (SSBN 602) successfully launched five POLARIS (A3T) missiles in a Follow-on Operational Test.

20 June 1975

FBM tender USS HOLLAND (AS 32) completed POSEIDON conversion at Puget Sound Naval Shipyard, Bremerton, WA.

23 June 1975

The Blue Crew of USS JAMES MADISON (SSBN 627) successfully launched two POSEIDON (C3) missiles during an Operational Test.

24 June 1975

USS GEORGE WASHINGTON CARVER (SSBN 656) successfully launched two POSEIDON (C3) missiles during an Operational Test.

27 June 1975

USS NATHAN HALE (SSBN 623) completed conversion to POSEIDON capability at Puget Sound Naval Shipyard, Bremerton, WA.

30 June 1975

USS LAFAYETTE (SSBN 616) deployed for operational patrol following POSEIDON conversion.

7 August 1975

USS ANDREW JACKSON (SSBN 619) completed conversion to POSEIDON capability at Electric Boat Division of General Dynamics, Groton, CT.

22 August 1975

USS STONEWALL JACKSON (SSBN 634) successfully launched three POSEIDON (C3) missiles during an Operational Test.

22 August 1975

The third Supplemental Flight Test of the Mk 500 Evader reentry body was successfully conducted from Vandenberg Air Force Base.

29 August 1975

The Blue Crew of USS JAMES K. POLK (SSBN 645) successfully launched two POSEIDON (C3) missiles during an Operational Test.

10 September 1975

The fourth Supplemental Flight Test of the Mk 500 Evader reentry body was conducted from Vandenberg Air Force Base.

15 September 1975

USS THOMAS A. EDISON (SSBN 610) deployed for operational patrol following POLARIS overhaul.

24 September 1975

The Blue Crew of USS NATHAN HALE(SSBN 623) successfully launched a POSEIDON(C3) missile in support of the ship’s Demonstrationand Shakedown Operation.

26 September 1975

USS SAM HOUSTON (SSBN 609) deployedfor operational patrol following POLARISoverhaul.

30 September 1975

The fifth C4 Mk 4 Supplemental Flight Test(SFT-05) was conducted from Vandenberg AirForce Base.

10 October 1975

The Blue Crew of USS ANDREWJACKSON (SSBN 619) successfully launchedone POSEIDON (C3) missile in support of theship’s Demonstration and ShakedownOperation.

12 October 1975

Navy Navigation Satellite TIP II waslaunched by the Air Force Space and Missile TestCenter at Vandenberg Air Force Base, CA.

23 October 1975

USS WOODROW WILSON (SSBN 624)completed conversion to POSEIDON capabilityat Newport News Shipbuilding and DrydockCompany, Newport News, VA.

5 November 1975

USS THOMAS JEFFERSON (SSBN 618)completed overhaul at Mare Island Naval Shipyard,Vallejo, CA.

8 November 1975

The Blue Crew of USS SAM RAYBURN(SSBN 635) successfully launched twoPOSEIDON (C3) missiles during an OperationalTest.

13 November 1975

USS KAMEHAMEHA (SSBN 642)launched a POSEIDON (C3) missile during anOperational Test.

13 November 1975

The sixth and final C4 Mk 4 SupplementalFlight Test (SFT-06) was conducted fromVandenberg Air Force Base.

21 November 1975

USS DANIEL WEBSTER (SSBN 626), 31stand final SSBN for conversion to POSEIDONcapability, commenced overhaul and conversion atElectric Boat Division of General Dynamics, Groton,CT.

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