Encyclopedia Astronautica
Poseidon



poseidc3.jpg
Poseidon C3
Credit: Lockheed-Martin
poseidc4.jpg
Poseidon C4
Credit: Lockheed-Martin
posec4d5.jpg
Poseidon C4 and D5
Credit: Lockheed-Martin
American submarine-launched ballistic missile. SLBM, 2 stages, inertial guided, nuclear MIRV warhead, range that of twice Polaris A-3.

In November 1963 the US Navy began studying a missile that would have the maximum possible capability within the confines of the existing Polaris submarine launch tubes. Diameter would be increased by deleting the spacers between the tube walls and the missile. Motor lengths would be shortened by use of nozzles submerged in the propellant load. Near-intercontinental range was expected, allowing the missiles to be fired from anywhere in the world's oceans rather than identifiable zones closer to Soviet coasts. After Air Force objections range was traded off for carriage of more payload – up to 14 Multiple Independent Reentry Vehicle warheads. The missile's name was changed from Polaris B3 to Poseidon C3 in 1965 – a move the Department of Defense bitterly regretted, since it targeted the missile with Congress as a ‘new' missile subject to intense scrutiny, rather than a ‘modification' of an existing design. First test launch was in August 1968, first submerged launch in August 1970, and the missile went on its first operational cruise in March 1971. Reliability problems with early production missiles and dud warhead issues were solved by 1974. During submarine overhauls, Polaris missiles would be replaced by Poseidon, and by 1981 Poseidon had replaced Polaris in the fleet. Poseidon in turn was replaced by the Trident C4 in 1979-1992.

Poseidon's accuracy was only 10% better than Polaris, the result of an intentional decision by the Department of Defense not to develop precision stellar-inertial guidance for the missile. The official position was that the Navy's SLBM's were to be a retaliation weapon against Soviet cities, without the capability of making a first strike against military targets.

Failures: 1. Success Rate: 99.63%. First Fail Date: 1969-01-21. Last Fail Date: 1969-01-21. Launch data is: complete. Development Cost $: 1,092.600 million. Recurring Price $: 3.957 million in 1973 dollars. Flyaway Unit Cost $: 2.483 million in 1973 dollars. Standard warhead: 1,630 kg (3,590 lb). Maximum range: 4,650 km (2,880 mi). Number Standard Warheads: 14. Standard RV: Mk.300. Standard warhead: W68. Warhead yield: 50 KT. CEP: 0.53 km (0.32 mi). Boost Propulsion: Solid rocket. Initial Operational Capability: 1971. Total Number Built: 640. Total Development Built: 21. Total Production Built: 619.

Historical Essay © Andreas Parsch

Lockheed UGM-73 Poseidon

The Poseidon was a direct develepment of the UGM-27 Polaris SLBM (Submarine-Launched Ballistic Missile), and succeeded the latter in U.S. Navy service.

In 1963, the Navy studied the development of a Polaris derivative enlarged to the maximum dimensions allowed by the existing Polaris launch tubes. In November 1963, this project became known as Polaris B-3, and at that time, one of the major goals was to increase range to 5600 km (3500 miles). During 1964, a MIRV (Multiple Independent Reentry Vehicle) warhead was introduced in the design, while the requirement for increased range was shelved. In early 1965, the missile was renamed as Poseidon C-3 (at least partly politically motivated, to stress that the new missile was more than a simple upgrade of Polaris), and later that year, the projected missile was allocated the formal designation of ZUGM-73A. The first launch of an UGM-73A missile occurred in August 1968, and the first submerged launch from USS James Madison (SSBN-627) succeeded in August 1970. In March 1971, the Poseidon was declared operational on SSBN-627. Other Lafayette (SSBN-616) class Polaris-equipped submarines were subsequently converted to Poseidon during regular reactor refits.

Like the UGM-27 Polaris, the UGM-73A was a two-stage solid-fueled missile, each stage having a single nozzle with thrust-vectoring control. It used essentially the same inertial navigation system as the UGM-27 with an accuracy of about 550 m (0.3 nm) CEP. While the Poseidon was only marginally longer than the UGM-27C Polaris A-3, the diameter was noticably larger. The was made possible by a redesign of the shock-attenuation systems in the launch tubes, allowing the removal of the liner in the tube. Range of the UGM-73A was only slightly higher than that of Polaris because of the bigger warhead section. The latter normally carried ten MK 3 independent reentry vehicles with a W-68 thermonuclear (50 kT) warhead. A load of up to 14 RVs could be fitted, reducing missile range from 5280 km (2850 nm) to about 4000 km (2200 nm). The low-yield warheads were deliberately chosen so that Poseidon was not suitable as a first-strike weapon against Soviet hardened strategic targets, but very effective as a retaliation weapon against "soft" targets (like cities). Because it was feared at the time, that an effectively invulnerable high-precision high-power SLBM would destablize the nuclear balance of deterrance, the development of a new stellar-inertial guidance system and high-yield warhead was not approved by the Department of Defense.

The first production Poseidon missiles suffered from severe reliability problems. These affected many components, including the nuclear warheads, some of which were defective to the point which would have prevented detonation. The problems were not solved until 1974. Beginning in October 1979, the Poseidon was gradually replaced by its successor, the UGM-96 Trident C-4, and the last Poseidon submarine was decommissioned in September 1992. Between 1970 and 1978, Lockheed built about 620 UGM-73A missiles.

Specifications

Note: Data given by several sources show slight variations. Figures given below may therefore be inaccurate!

Data for UGM-73A:

Length 10.39 m (34 ft 1.2 in)
Diameter 1.88 m (6 ft 2 in)
Weight 29200 kg (64400 lb)
Speed > 12900 km-h (8000 mph)
Ceiling > 800 km (500 miles)
Range 5280 km (2850 nm)
Propulsion 1st stage: Hercules-Thiokol solid-fueled rocket
2nd stage: Hercules solid-fueled rocket
Warhead 10x W-68 thermonuclear (50 kT) in 10x MK 3 RV
Main Sources

[1] James N. Gibson: "Nuclear Weapons of the United States", Schiffer Publishing Ltd, 1996
[2] Norman Friedman: "US Naval Weapons", Conway Maritime Press, 1983
[3] Bill Gunston: "The Illustrated Encyclopedia of Rockets and Missiles", Salamander Books Ltd, 1979
[4] René J. Francillon: "Lockheed Aircraft since 1913", Putnam, 1987


AKA: UGM-73A; Poseidon C-3.
Status: Retired 1990.
Gross mass: 29,475 kg (64,981 lb).
Payload: 1,630 kg (3,590 lb).
Height: 10.36 m (33.98 ft).
Diameter: 1.88 m (6.16 ft).
Span: 1.88 m (6.16 ft).
Apogee: 500 km (310 mi).
First Launch: 1968.08.16.
Last Launch: 1990.04.30.
Number: 268 .

More... - Chronology...


Associated Countries
Associated Spacecraft
  • Space Cruiser American manned combat spacecraft. Study 1973. The space cruiser was a US Navy design for a single-place crewed space interceptor designed to destroy Soviet satellites used to track the location of US warships. More...

See also
  • missile Guided self-propelled military weapon (as opposed to rocket, an unguided self-propelled weapon). More...

Associated Manufacturers and Agencies
  • Lockheed American manufacturer of rockets, spacecraft, and rocket engines. Lockheed Martin, Sunnyvale, CA, USA. More...

Bibliography
  • McDowell, Jonathan, Jonathan's Space Home Page (launch records), Harvard University, 1997-present. Web Address when accessed: here.

Associated Launch Sites
  • Cape Canaveral America's largest launch center, used for all manned launches. Today only six of the 40 launch complexes built here remain in use. Located at or near Cape Canaveral are the Kennedy Space Center on Merritt Island, used by NASA for Saturn V and Space Shuttle launches; Patrick AFB on Cape Canaveral itself, operated the US Department of Defense and handling most other launches; the commercial Spaceport Florida; the air-launched launch vehicle and missile Drop Zone off Mayport, Florida, located at 29.00 N 79.00 W, and an offshore submarine-launched ballistic missile launch area. All of these take advantage of the extensive down-range tracking facilities that once extended from the Cape, through the Caribbean, South Atlantic, and to South Africa and the Indian Ocean. More...
  • Cape Canaveral LC25D Poseidon launch complex. Complex 25 supported the U.S. Navy's submarine ballistic missile programs. Pads 25C and 25D were built in 1967 to support the Navy's Poseidon ballistic missile program. Seventeen Poseidons were launched from pads 25C and 25D between 16 August 1968 and 30 June 1970. Complex 25 was inactivated and dismantled in 1979. More...
  • Cape Canaveral LC25C Trident, Poseidon launch complex. Complex 25 supported the U.S. Navy's submarine ballistic missile programs. Pads 25C and 25D were built in 1967 to support the Navy's Poseidon ballistic missile program. Seventeen Poseidons were launched from pads 25C and 25D between 16 August 1968 and 30 June 1970. Pad 25C supported the Cape's first Trident I ballistic missile launch on 18 January 1977. Seventeen more Trident I missiles were launched from Pad 25C between 15 February 1977 and 24 January 1979. Complex 25 was inactivated and dismantled in 1979. More...

Associated Stages

Poseidon Chronology


1968 August 16 - . 10:30 GMT - . Launch Site: Cape Canaveral. Launch Complex: Cape Canaveral LC25C. Launch Vehicle: Poseidon. LV Configuration: Poseidon C3X-1.
  • Test mission - . Nation: USA. Agency: USN. Apogee: 500 km (310 mi).

1968 November 26 - . 17:00 GMT - . Launch Site: Cape Canaveral. Launch Complex: Cape Canaveral LC25C. Launch Vehicle: Poseidon. LV Configuration: Poseidon C3X-2.
  • Test mission - . Nation: USA. Agency: USN. Apogee: 500 km (310 mi).

1969 January 21 - . 16:00 GMT - . Launch Site: Cape Canaveral. Launch Complex: Cape Canaveral LC25C. Launch Vehicle: Poseidon. LV Configuration: Poseidon C3X-3. FAILURE: Failure.
  • Test mission - . Nation: USA. Agency: USN. Apogee: 10 km (6 mi).

1969 February 19 - . 16:05 GMT - . Launch Site: Cape Canaveral. Launch Complex: Cape Canaveral LC25C. Launch Vehicle: Poseidon. LV Configuration: Poseidon C3X-4.
  • Test mission - . Nation: USA. Agency: USN. Apogee: 500 km (310 mi).

1969 March 20 - . 23:10 GMT - . Launch Site: Cape Canaveral. Launch Complex: Cape Canaveral LC25C. Launch Vehicle: Poseidon. LV Configuration: Poseidon C3XD-5.
  • Test mission - . Nation: USA. Agency: USN. Apogee: 500 km (310 mi).

1969 April 9 - . Launch Site: Cape Canaveral. Launch Complex: Cape Canaveral LC25C. Launch Vehicle: Poseidon. LV Configuration: Poseidon C3XD-6.
  • Test mission - . Nation: USA. Agency: USN. Apogee: 500 km (310 mi).

1969 May 24 - . Launch Site: Cape Canaveral. Launch Complex: Cape Canaveral LC25C. Launch Vehicle: Poseidon. LV Configuration: Poseidon C3XD-9.
  • Test mission - . Nation: USA. Agency: USN. Apogee: 500 km (310 mi).

1969 June 15 - . Launch Site: Cape Canaveral. Launch Complex: Cape Canaveral LC25C. Launch Vehicle: Poseidon. LV Configuration: Poseidon C3XD-10.
  • Test mission - . Nation: USA. Agency: USN. Apogee: 500 km (310 mi).

1969 July 9 - . 11:50 GMT - . Launch Site: Cape Canaveral. Launch Complex: Cape Canaveral LC25C. Launch Vehicle: Poseidon. LV Configuration: Poseidon C3XD-11.
  • Test mission - . Nation: USA. Agency: USN. Apogee: 500 km (310 mi).

1969 August 22 - . 00:30 GMT - . Launch Site: Cape Canaveral. Launch Complex: Cape Canaveral LC25C. Launch Vehicle: Poseidon. LV Configuration: Poseidon C3XD-12.
  • Test mission - . Nation: USA. Agency: USN. Apogee: 500 km (310 mi).

1969 September 17 - . 16:37 GMT - . Launch Site: Cape Canaveral. Launch Complex: Cape Canaveral LC25D. Launch Vehicle: Poseidon. LV Configuration: Poseidon C3XD-13.
  • Test mission - . Nation: USA. Agency: USN. Apogee: 500 km (310 mi).

1969 November 3 - . 16:00 GMT - . Launch Site: Cape Canaveral. Launch Complex: Cape Canaveral LC25C. Launch Vehicle: Poseidon. LV Configuration: Poseidon C3XD-8.
  • Test mission - . Nation: USA. Agency: USN. Apogee: 500 km (310 mi).

1969 November 26 - . 20:01 GMT - . Launch Site: Cape Canaveral. Launch Complex: Cape Canaveral LC25C. Launch Vehicle: Poseidon. LV Configuration: Poseidon C3XT-17.
  • Test mission - . Nation: USA. Agency: USN. Apogee: 500 km (310 mi).

1969 December 16 - . 17:25 GMT - . Launch Site: ETR Launch Area. Launch Platform: EAG-154. Launch Vehicle: Poseidon. LV Configuration: Poseidon C3XT-16.
  • Test mission - . Nation: USA. Agency: USN. Apogee: 500 km (310 mi).

1970 January 23 - . 18:00 GMT - . Launch Site: Cape Canaveral. Launch Complex: Cape Canaveral LC25C. Launch Vehicle: Poseidon. LV Configuration: Poseidon C3XT-19.
  • Test mission - . Nation: USA. Agency: USN. Apogee: 500 km (310 mi).

1970 February 4 - . 20:38 GMT - . Launch Site: ETR Launch Area. Launch Platform: EAG-154. Launch Vehicle: Poseidon. LV Configuration: Poseidon C3XT-20.
  • Test mission - . Nation: USA. Agency: USN. Apogee: 500 km (310 mi).

1970 March 24 - . 19:17 GMT - . Launch Site: ETR Launch Area. Launch Platform: EAG-154. Launch Vehicle: Poseidon. LV Configuration: Poseidon C3XT-22.
  • Test mission - . Nation: USA. Agency: USN. Apogee: 500 km (310 mi).

1970 May 14 - . Launch Site: Cape Canaveral. Launch Complex: Cape Canaveral LC25C. Launch Vehicle: Poseidon. LV Configuration: Poseidon C3XT-21.
  • Test mission - . Nation: USA. Agency: USN. Apogee: 500 km (310 mi).

1970 June 17 - . Launch Site: Cape Canaveral. Launch Complex: Cape Canaveral LC25C. Launch Vehicle: Poseidon. LV Configuration: Poseidon C3XT-23.
  • Test mission - . Nation: USA. Agency: USN. Apogee: 500 km (310 mi).

1970 June 30 - . Launch Site: Cape Canaveral. Launch Complex: Cape Canaveral LC25C. Launch Vehicle: Poseidon. LV Configuration: Poseidon C3XT-24.
  • Test mission - . Nation: USA. Agency: USN. Apogee: 500 km (310 mi).

1970 August 3 - . 15:00 GMT - . Launch Site: ETR Launch Area. Launch Platform: SSBN 627. Launch Vehicle: Poseidon. LV Configuration: Poseidon C3P-1.
  • PEM-1 operational test launch - . Nation: USA. Agency: USN. Apogee: 500 km (310 mi).

1970 August 17 - . 16:16 GMT - . Launch Site: ETR Launch Area. Launch Platform: SSBN 627. Launch Vehicle: Poseidon. LV Configuration: Poseidon C3P-2.
  • PEM-2 operational test launch - . Nation: USA. Agency: USN. Apogee: 500 km (310 mi).

1970 September 8 - . 16:00 GMT - . Launch Site: ETR Launch Area. Launch Platform: SSBN 629. Launch Vehicle: Poseidon. LV Configuration: Poseidon C3P-3.
  • PEM-3 operational test launch - . Nation: USA. Agency: USN. Apogee: 500 km (310 mi).

1970 September 21 - . 15:00 GMT - . Launch Site: ETR Launch Area. Launch Platform: SSBN 629. Launch Vehicle: Poseidon. LV Configuration: Poseidon C3P-4.
  • PEM-4 operational test launch - . Nation: USA. Agency: USN. Apogee: 500 km (310 mi).

1970 October 6 - . 15:15 GMT - . Launch Site: ETR Launch Area. Launch Platform: SSBN 629. Launch Vehicle: Poseidon. LV Configuration: Poseidon C3P-5.
  • PEM-5 operational test launch - . Nation: USA. Agency: USN. Apogee: 500 km (310 mi).

1970 October 23 - . 22:00 GMT - . Launch Site: ETR Launch Area. Launch Platform: SSBN 627. Launch Vehicle: Poseidon. LV Configuration: Poseidon C3E-5.
  • Demonstration and shakedown operations launch - . Nation: USA. Agency: USN. Apogee: 500 km (310 mi).

1970 November 27 - . 22:17 GMT - . Launch Site: ETR Launch Area. Launch Platform: SSBN 629. Launch Vehicle: Poseidon. LV Configuration: Poseidon C3E-10.
  • Demonstration and shakedown operations launch - . Nation: USA. Agency: USN. Apogee: 500 km (310 mi).

1971 February 4 - . 22:45 GMT - . Launch Site: ETR Launch Area. Launch Platform: SSBN 632. Launch Vehicle: Poseidon. LV Configuration: Poseidon C3E-19.
  • Demonstration and shakedown operations launch - . Nation: USA. Agency: USN. Apogee: 500 km (310 mi).

1971 March 15 - . 23:00 GMT - . Launch Site: ETR Launch Area. Launch Platform: SSBN 632. Launch Vehicle: Poseidon. LV Configuration: Poseidon C3E-39.
  • Demonstration and shakedown operations launch - . Nation: USA. Agency: USN. Apogee: 500 km (310 mi).

1971 March 29 - . 23:05 GMT - . Launch Site: ETR Launch Area. Launch Platform: SSBN 631. Launch Vehicle: Poseidon. LV Configuration: Poseidon C3E-12.
  • Demonstration and shakedown operations launch - . Nation: USA. Agency: USN. Apogee: 500 km (310 mi).

1971 April 19 - . 23:45 GMT - . Launch Site: ETR Launch Area. Launch Platform: SSBN 630. Launch Vehicle: Poseidon. LV Configuration: Poseidon C3E-44.
  • Demonstration and shakedown operations launch - . Nation: USA. Agency: USN. Apogee: 500 km (310 mi).

1971 May 1 - . 00:03 GMT - . Launch Site: ETR Launch Area. Launch Platform: SSBN 628. Launch Vehicle: Poseidon. LV Configuration: Poseidon C3E-70.
  • Demonstration and shakedown operations launch - . Nation: USA. Agency: USN. Apogee: 500 km (310 mi).

1971 May 11 - . 22:30 GMT - . Launch Site: ETR Launch Area. Launch Platform: SSBN 631. Launch Vehicle: Poseidon. LV Configuration: Poseidon C3E-2.
  • Demonstration and shakedown operations launch - . Nation: USA. Agency: USN. Apogee: 500 km (310 mi).

1971 May 11 - . 23:47 GMT - . Launch Site: ETR Launch Area. Launch Platform: SSBN 631. Launch Vehicle: Poseidon. LV Configuration: Poseidon C3E-9.
  • Demonstration and shakedown operations launch - . Nation: USA. Agency: USN. Apogee: 500 km (310 mi).

1971 June 7 - . 16:53 GMT - . Launch Site: ETR Launch Area. Launch Platform: SSBN 630. Launch Vehicle: Poseidon. LV Configuration: Poseidon C3E-4.
  • Demonstration and shakedown operations launch - . Nation: USA. Agency: USN. Apogee: 500 km (310 mi).

1971 July 2 - . 16:30 GMT - . Launch Site: ETR Launch Area. Launch Platform: SSBN 633. Launch Vehicle: Poseidon.
  • Demonstration and shakedown operations launch - . Nation: USA. Agency: USN. Apogee: 500 km (310 mi).

1971 July 17 - . 23:30 GMT - . Launch Site: ETR Launch Area. Launch Platform: SSBN 628. Launch Vehicle: Poseidon.
  • Demonstration and shakedown operations launch - . Nation: USA. Agency: USN. Apogee: 500 km (310 mi).

1971 August 16 - . 16:32 GMT - . Launch Site: ETR Launch Area. Launch Platform: SSBN 633. Launch Vehicle: Poseidon.
  • Demonstration and shakedown operations launch - . Nation: USA. Agency: USN. Apogee: 500 km (310 mi).

1971 October 14 - . 21:13 GMT - . Launch Site: ETR Launch Area. Launch Platform: SSBN 635. Launch Vehicle: Poseidon.
  • Demonstration and shakedown operations launch - . Nation: USA. Agency: USN. Apogee: 500 km (310 mi).

1971 November 4 - . 16:00 GMT - . Launch Site: ETR Launch Area. Launch Platform: SSBN 636. Launch Vehicle: Poseidon.
  • Demonstration and shakedown operations surface launch - . Nation: USA. Agency: USN. Apogee: 500 km (310 mi).

1971 November 24 - . 21:15 GMT - . Launch Site: ETR Launch Area. Launch Platform: SSBN 635. Launch Vehicle: Poseidon.
  • Demonstration and shakedown operations launch - . Nation: USA. Agency: USN. Apogee: 500 km (310 mi).

1971 December 6 - . 17:47 GMT - . Launch Site: ETR Launch Area. Launch Platform: SSBN 634. Launch Vehicle: Poseidon.
  • Demonstration and shakedown operations launch - . Nation: USA. Agency: USN. Apogee: 500 km (310 mi).

1971 December 17 - . 21:45 GMT - . Launch Site: ETR Launch Area. Launch Platform: SSBN 636. Launch Vehicle: Poseidon.
  • Demonstration and shakedown operations launch - . Nation: USA. Agency: USN. Apogee: 500 km (310 mi).

1972 January 21 - . 21:45 GMT - . Launch Site: ETR Launch Area. Launch Platform: SSBN 634. Launch Vehicle: Poseidon.
  • Demonstration and shakedown operations launch - . Nation: USA. Agency: USN. Apogee: 500 km (310 mi).

1972 June 16 - . 23:15 GMT - . Launch Site: ETR Launch Area. Launch Platform: SSBN 640. Launch Vehicle: Poseidon. LV Configuration: Poseidon C3E.
  • Demonstration and shakedown operations launch - . Nation: USA. Agency: USN. Apogee: 500 km (310 mi).

1972 July 5 - . 23:15 GMT - . Launch Site: ETR Launch Area. Launch Platform: SSBN 641. Launch Vehicle: Poseidon.
  • Demonstration and shakedown operations launch - . Nation: USA. Agency: USN. Apogee: 500 km (310 mi).

1972 August 18 - . Launch Site: ETR Launch Area. Launch Platform: SSBN 631. Launch Vehicle: Poseidon.
  • FOT-1 Follow-on operational missile test - . Nation: USA. Agency: USN. Apogee: 500 km (310 mi).

1972 August 18 - . Launch Site: ETR Launch Area. Launch Platform: SSBN 631. Launch Vehicle: Poseidon.
  • FOT-1 Follow-on operational missile test - . Nation: USA. Agency: USN. Apogee: 500 km (310 mi).

1972 August 18 - . Launch Site: ETR Launch Area. Launch Platform: SSBN 631. Launch Vehicle: Poseidon.
  • FOT-1 Follow-on operational missile test - . Nation: USA. Agency: USN. Apogee: 500 km (310 mi).

1972 August 18 - . Launch Site: ETR Launch Area. Launch Platform: SSBN 631. Launch Vehicle: Poseidon.
  • FOT-1 Follow-on operational missile test - . Nation: USA. Agency: USN. Apogee: 500 km (310 mi).

1972 September 25 - . 22:45 GMT - . Launch Site: ETR Launch Area. Launch Platform: SSBN 643. Launch Vehicle: Poseidon.
  • Demonstration and shakedown operations launch - . Nation: USA. Agency: USN. Apogee: 500 km (310 mi).

1972 September 28 - . Launch Site: ETR Launch Area. Launch Platform: SSBN 632. Launch Vehicle: Poseidon.
  • FOT-2 Follow-on operational missile test - . Nation: USA. Agency: USN. Apogee: 500 km (310 mi).

1972 September 28 - . Launch Site: ETR Launch Area. Launch Platform: SSBN 632. Launch Vehicle: Poseidon.
  • FOT-2 Follow-on operational missile test - . Nation: USA. Agency: USN. Apogee: 500 km (310 mi).

1972 September 28 - . Launch Site: ETR Launch Area. Launch Platform: SSBN 632. Launch Vehicle: Poseidon.
  • FOT-2 Follow-on operational missile test - . Nation: USA. Agency: USN. Apogee: 500 km (310 mi).

1972 September 28 - . Launch Site: ETR Launch Area. Launch Platform: SSBN 632. Launch Vehicle: Poseidon.
  • FOT-2 Follow-on operational missile test - . Nation: USA. Agency: USN. Apogee: 500 km (310 mi).

1972 November 2 - . Launch Site: ETR Launch Area. Launch Platform: SSBN 630. Launch Vehicle: Poseidon.
  • FOT-3 Follow-on operational missile test - . Nation: USA. Agency: USN. Apogee: 500 km (310 mi).

1972 November 2 - . Launch Site: ETR Launch Area. Launch Platform: SSBN 630. Launch Vehicle: Poseidon.
  • FOT-3 Follow-on operational missile test - . Nation: USA. Agency: USN. Apogee: 500 km (310 mi).

1972 November 2 - . Launch Site: ETR Launch Area. Launch Platform: SSBN 630. Launch Vehicle: Poseidon.
  • FOT-3 Follow-on operational missile test - . Nation: USA. Agency: USN. Apogee: 500 km (310 mi).

1972 November 2 - . Launch Site: ETR Launch Area. Launch Platform: SSBN 630. Launch Vehicle: Poseidon.
  • FOT-3 Follow-on operational missile test - . Nation: USA. Agency: USN. Apogee: 500 km (310 mi).

1972 December 11 - . Launch Site: ETR Launch Area. Launch Platform: SSBN 629. Launch Vehicle: Poseidon.
  • FOT-4 Follow-on operational missile test - . Nation: USA. Agency: USN. Apogee: 500 km (310 mi).

1972 December 11 - . Launch Site: ETR Launch Area. Launch Platform: SSBN 629. Launch Vehicle: Poseidon.
  • FOT-4 Follow-on operational missile test - . Nation: USA. Agency: USN. Apogee: 500 km (310 mi).

1972 December 11 - . Launch Site: ETR Launch Area. Launch Platform: SSBN 629. Launch Vehicle: Poseidon.
  • FOT-4 Follow-on operational missile test - . Nation: USA. Agency: USN. Apogee: 500 km (310 mi).

1972 December 11 - . Launch Site: ETR Launch Area. Launch Platform: SSBN 629. Launch Vehicle: Poseidon.
  • FOT-4 Follow-on operational missile test - . Nation: USA. Agency: USN. Apogee: 500 km (310 mi).

1972 December 15 - . 21:25 GMT - . Launch Site: ETR Launch Area. Launch Platform: SSBN 642. Launch Vehicle: Poseidon.
  • Demonstration and shakedown operations launch - . Nation: USA. Agency: USN. Apogee: 500 km (310 mi).

1972 December 18 - . 21:15 GMT - . Launch Site: ETR Launch Area. Launch Platform: SSBN 644. Launch Vehicle: Poseidon.
  • Demonstration and shakedown operations launch - . Nation: USA. Agency: USN. Apogee: 500 km (310 mi).

1973 January 13 - . 21:45 GMT - . Launch Site: ETR Launch Area. Launch Platform: SSBN 645. Launch Vehicle: Poseidon.
  • Demonstration and shakedown operations launch - . Nation: USA. Agency: USN. Apogee: 500 km (310 mi).

1973 January 23 - . Launch Site: ETR Launch Area. Launch Platform: SSBN 628. Launch Vehicle: Poseidon.
  • FOT-5 Follow-on operational missile test - . Nation: USA. Agency: USN. Apogee: 500 km (310 mi).

1973 January 23 - . Launch Site: ETR Launch Area. Launch Platform: SSBN 628. Launch Vehicle: Poseidon.
  • FOT-5 Follow-on operational missile test - . Nation: USA. Agency: USN. Apogee: 500 km (310 mi).

1973 January 23 - . Launch Site: ETR Launch Area. Launch Platform: SSBN 628. Launch Vehicle: Poseidon.
  • FOT-5 Follow-on operational missile test - . Nation: USA. Agency: USN. Apogee: 500 km (310 mi).

1973 January 23 - . Launch Site: ETR Launch Area. Launch Platform: SSBN 628. Launch Vehicle: Poseidon.
  • FOT-5 Follow-on operational missile test - . Nation: USA. Agency: USN. Apogee: 500 km (310 mi).

1973 March 1 - . Launch Site: ETR Launch Area. Launch Platform: SSBN 633. Launch Vehicle: Poseidon.
  • FOT-6 Follow-on operational missile test - . Nation: USA. Agency: USN. Apogee: 500 km (310 mi).

1973 March 1 - . Launch Site: ETR Launch Area. Launch Platform: SSBN 633. Launch Vehicle: Poseidon.
  • FOT-6 Follow-on operational missile test - . Nation: USA. Agency: USN. Apogee: 500 km (310 mi).

1973 March 1 - . Launch Site: ETR Launch Area. Launch Platform: SSBN 633. Launch Vehicle: Poseidon.
  • FOT-6 Follow-on operational missile test - . Nation: USA. Agency: USN. Apogee: 500 km (310 mi).

1973 March 1 - . Launch Site: ETR Launch Area. Launch Platform: SSBN 633. Launch Vehicle: Poseidon.
  • FOT-6 Follow-on operational missile test - . Nation: USA. Agency: USN. Apogee: 500 km (310 mi).

1973 April 28 - . 22:48 GMT - . Launch Site: ETR Launch Area. Launch Platform: SSBN 654. Launch Vehicle: Poseidon.
  • Demonstration and shakedown operations launch - . Nation: USA. Agency: USN. Apogee: 500 km (310 mi).

1973 May 9 - . 23:25 GMT - . Launch Site: ETR Launch Area. Launch Platform: SSBN 655. Launch Vehicle: Poseidon.
  • Demonstration and shakedown operations launch - . Nation: USA. Agency: USN. Apogee: 500 km (310 mi).

1973 May 19 - . 23:00 GMT - . Launch Site: ETR Launch Area. Launch Platform: SSBN 656. Launch Vehicle: Poseidon.
  • Demonstration and shakedown operations launch - . Nation: USA. Agency: USN. Apogee: 500 km (310 mi).

1973 September 15 - . 22:15 GMT - . Launch Site: ETR Launch Area. Launch Platform: SSBN 657. Launch Vehicle: Poseidon.
  • Demonstration and shakedown operations launch - . Nation: USA. Agency: USN. Apogee: 500 km (310 mi).

1974 April 12 - . 23:24 GMT - . Launch Site: ETR Launch Area. Launch Platform: SSBN 658. Launch Vehicle: Poseidon.
  • Demonstration and shakedown operations launch - . Nation: USA. Agency: USN. Apogee: 500 km (310 mi).

1974 May 15 - . 23:00 GMT - . Launch Site: ETR Launch Area. Launch Platform: SSBN 659. Launch Vehicle: Poseidon.
  • Demonstration and shakedown operations launch - . Nation: USA. Agency: USN. Apogee: 500 km (310 mi).

1974 May 15 - . 23:45 GMT - . Launch Site: ETR Launch Area. Launch Platform: SSBN 659. Launch Vehicle: Poseidon.
  • Demonstration and shakedown operations launch - . Nation: USA. Agency: USN. Apogee: 500 km (310 mi).

1974 October 22 - . Launch Site: ETR Launch Area. Launch Platform: SSBN 659. Launch Vehicle: Poseidon.
  • FOT-7 Follow-on operational missile test - . Nation: USA. Agency: USN. Apogee: 500 km (310 mi).

1974 October 22 - . Launch Site: ETR Launch Area. Launch Platform: SSBN 659. Launch Vehicle: Poseidon.
  • FOT-7 Follow-on operational missile test - . Nation: USA. Agency: USN. Apogee: 500 km (310 mi).

1974 October 22 - . Launch Site: ETR Launch Area. Launch Platform: SSBN 659. Launch Vehicle: Poseidon.
  • FOT-7 Follow-on operational missile test - . Nation: USA. Agency: USN. Apogee: 500 km (310 mi).

1974 October 22 - . Launch Site: ETR Launch Area. Launch Platform: SSBN 659. Launch Vehicle: Poseidon.
  • FOT-7 Follow-on operational missile test - . Nation: USA. Agency: USN. Apogee: 500 km (310 mi).

1974 November 22 - . Launch Site: ETR Launch Area. Launch Platform: SSBN 658. Launch Vehicle: Poseidon.
  • FOT-8 Follow-on operational missile test - . Nation: USA. Agency: USN. Apogee: 500 km (310 mi).

1974 November 22 - . Launch Site: ETR Launch Area. Launch Platform: SSBN 658. Launch Vehicle: Poseidon.
  • FOT-8 Follow-on operational missile test - . Nation: USA. Agency: USN. Apogee: 500 km (310 mi).

1974 November 22 - . Launch Site: ETR Launch Area. Launch Platform: SSBN 658. Launch Vehicle: Poseidon.
  • FOT-8 Follow-on operational missile test - . Nation: USA. Agency: USN. Apogee: 500 km (310 mi).

1974 November 22 - . Launch Site: ETR Launch Area. Launch Platform: SSBN 658. Launch Vehicle: Poseidon.
  • FOT-8 Follow-on operational missile test - . Nation: USA. Agency: USN. Apogee: 500 km (310 mi).

1974 December 16 - . 16:00 GMT - . Launch Site: ETR Launch Area. Launch Platform: SSBN 616. Launch Vehicle: Poseidon.
  • Demonstration and shakedown operations launch - . Nation: USA. Agency: USN. Apogee: 500 km (310 mi).

1975 April 18 - . Launch Site: ETR Launch Area. Launch Platform: SSBN 645. Launch Vehicle: Poseidon.
  • FOT-9 Follow-on operational missile test - . Nation: USA. Agency: USN. Apogee: 500 km (310 mi).

1975 April 18 - . Launch Site: ETR Launch Area. Launch Platform: SSBN 645. Launch Vehicle: Poseidon.
  • FOT-9 Follow-on operational missile test - . Nation: USA. Agency: USN. Apogee: 500 km (310 mi).

1975 April 24 - . Launch Site: ETR Launch Area. Launch Platform: SSBN 633. Launch Vehicle: Poseidon.
  • FOT-10? Follow-on operational missile test - . Nation: USA. Agency: USN. Apogee: 500 km (310 mi).

1975 May 28 - . 23:00 GMT - . Launch Site: ETR Launch Area. Launch Platform: SSBN 617. Launch Vehicle: Poseidon.
  • DASO-34 demonstration and shakedown operations launch - . Nation: USA. Agency: USN. Apogee: 500 km (310 mi).

1975 May 29 - . 00:02 GMT - . Launch Site: ETR Launch Area. Launch Platform: SSBN 617. Launch Vehicle: Poseidon.
  • DASO-35 demonstration and shakedown operations launch - . Nation: USA. Agency: USN. Apogee: 500 km (310 mi).

1975 June 23 - . Launch Site: ETR Launch Area. Launch Platform: SSBN 627. Launch Vehicle: Poseidon.
  • FOT-11? Follow-on operational missile test - . Nation: USA. Agency: USN. Apogee: 500 km (310 mi).

1975 June 23 - . Launch Site: ETR Launch Area. Launch Platform: SSBN 627. Launch Vehicle: Poseidon.
  • FOT-11? Follow-on operational missile test - . Nation: USA. Agency: USN. Apogee: 500 km (310 mi).

1975 June 24 - . Launch Site: ETR Launch Area. Launch Platform: SSBN 656. Launch Vehicle: Poseidon.
  • FOT-12? Follow-on operational missile test - . Nation: USA. Agency: USN. Apogee: 500 km (310 mi).

1975 June 24 - . Launch Site: ETR Launch Area. Launch Platform: SSBN 656. Launch Vehicle: Poseidon.
  • FOT-12? Follow-on operational missile test - . Nation: USA. Agency: USN. Apogee: 500 km (310 mi).

1975 August 22 - . Launch Site: ETR Launch Area. Launch Platform: SSBN 634. Launch Vehicle: Poseidon.
  • FOT-13? Follow-on operational missile test - . Nation: USA. Agency: USN. Apogee: 500 km (310 mi).

1975 August 22 - . Launch Site: ETR Launch Area. Launch Platform: SSBN 634. Launch Vehicle: Poseidon.
  • FOT-13? Follow-on operational missile test - . Nation: USA. Agency: USN. Apogee: 500 km (310 mi).

1975 August 22 - . Launch Site: ETR Launch Area. Launch Platform: SSBN 634. Launch Vehicle: Poseidon.
  • FOT-13? Follow-on operational missile test - . Nation: USA. Agency: USN. Apogee: 500 km (310 mi).

1975 August 29 - . Launch Site: ETR Launch Area. Launch Platform: SSBN 645. Launch Vehicle: Poseidon.
  • FOT-14? Follow-on operational missile test - . Nation: USA. Agency: USN. Apogee: 500 km (310 mi).

1975 August 29 - . Launch Site: ETR Launch Area. Launch Platform: SSBN 645. Launch Vehicle: Poseidon.
  • FOT-14? Follow-on operational missile test - . Nation: USA. Agency: USN. Apogee: 500 km (310 mi).

1975 September 24 - . 23:00 GMT - . Launch Site: ETR Launch Area. Launch Platform: SSBN 623. Launch Vehicle: Poseidon.
  • Demonstration and shakedown operations launch - . Nation: USA. Agency: USN. Apogee: 500 km (310 mi).

1975 October 10 - . 23:00 GMT - . Launch Site: ETR Launch Area. Launch Platform: SSBN 619. Launch Vehicle: Poseidon.
  • Demonstration and shakedown operations launch - . Nation: USA. Agency: USN. Apogee: 500 km (310 mi).

1975 November 8 - . Launch Site: ETR Launch Area. Launch Platform: SSBN 635. Launch Vehicle: Poseidon.
  • FOT-15? Follow-on operational missile test - . Nation: USA. Agency: USN. Apogee: 500 km (310 mi).

1975 November 8 - . Launch Site: ETR Launch Area. Launch Platform: SSBN 635. Launch Vehicle: Poseidon.
  • FOT-15? Follow-on operational missile test - . Nation: USA. Agency: USN. Apogee: 500 km (310 mi).

1975 November 13 - . Launch Site: ETR Launch Area. Launch Platform: SSBN 642. Launch Vehicle: Poseidon.
  • FOT-16? Follow-on operational missile test - . Nation: USA. Agency: USN. Apogee: 500 km (310 mi).

1976 February 3 - . 21:15 GMT - . Launch Site: ETR Launch Area. Launch Platform: SSBN 643. Launch Vehicle: Poseidon.
  • FOT-17? Follow-on operational missile test - . Nation: USA. Agency: USN. Apogee: 500 km (310 mi).

1976 February 3 - . 21:16 GMT - . Launch Site: ETR Launch Area. Launch Platform: SSBN 643. Launch Vehicle: Poseidon.
  • FOT-17? Follow-on operational missile test - . Nation: USA. Agency: USN. Apogee: 500 km (310 mi).

1976 February 3 - . 21:47 GMT - . Launch Site: ETR Launch Area. Launch Platform: SSBN 643. Launch Vehicle: Poseidon.
  • FOT-17? Follow-on operational missile test - . Nation: USA. Agency: USN. Apogee: 500 km (310 mi).

1976 February 14 - . 22:00 GMT - . Launch Site: ETR Launch Area. Launch Platform: SSBN 624. Launch Vehicle: Poseidon.
  • Demonstration and shakedown operations launch - . Nation: USA. Agency: USN. Apogee: 500 km (310 mi).

1976 April 20 - . 20:08 GMT - . Launch Site: ETR Launch Area. Launch Platform: SSBN 656. Launch Vehicle: Poseidon.
  • FOT-18? Follow-on operational missile test - . Nation: USA. Agency: USN. Apogee: 500 km (310 mi).

1976 April 20 - . 20:09 GMT - . Launch Site: ETR Launch Area. Launch Platform: SSBN 656. Launch Vehicle: Poseidon.
  • FOT-18? Follow-on operational missile test - . Nation: USA. Agency: USN. Apogee: 500 km (310 mi).

1976 April 23 - . 09:46 GMT - . Launch Site: ETR Launch Area. Launch Platform: SSBN 644. Launch Vehicle: Poseidon.
  • FOT-19? Follow-on operational missile test - . Nation: USA. Agency: USN. Apogee: 500 km (310 mi).

1976 April 23 - . 09:53 GMT - . Launch Site: ETR Launch Area. Launch Platform: SSBN 644. Launch Vehicle: Poseidon.
  • FOT-19? Follow-on operational missile test - . Nation: USA. Agency: USN. Apogee: 500 km (310 mi).

1976 May 25 - . 22:00 GMT - . Launch Site: ETR Launch Area. Launch Platform: SSBN 620. Launch Vehicle: Poseidon.
  • Demonstration and shakedown operations launch - . Nation: USA. Agency: USN. Apogee: 500 km (310 mi).

1976 June 22 - . 20:16 GMT - . Launch Site: ETR Launch Area. Launch Platform: SSBN 632. Launch Vehicle: Poseidon.
  • FOT-20? Follow-on operational missile test - . Nation: USA. Agency: USN. Apogee: 500 km (310 mi).

1976 June 22 - . 20:17 GMT - . Launch Site: ETR Launch Area. Launch Platform: SSBN 632. Launch Vehicle: Poseidon.
  • FOT-20? Follow-on operational missile test - . Nation: USA. Agency: USN. Apogee: 500 km (310 mi).

1976 June 26 - . 08:58 GMT - . Launch Site: ETR Launch Area. Launch Platform: SSBN 640. Launch Vehicle: Poseidon.
  • FOT-21? Follow-on operational missile test - . Nation: USA. Agency: USN. Apogee: 500 km (310 mi).

1976 June 26 - . 09:06 GMT - . Launch Site: ETR Launch Area. Launch Platform: SSBN 640. Launch Vehicle: Poseidon.
  • FOT-21? Follow-on operational missile test - . Nation: USA. Agency: USN. Apogee: 500 km (310 mi).

1976 August 20 - . 22:48 GMT - . Launch Site: ETR Launch Area. Launch Platform: SSBN 636. Launch Vehicle: Poseidon.
  • FOT-22? Follow-on operational missile test - . Nation: USA. Agency: USN. Apogee: 500 km (310 mi).

1976 August 20 - . 22:50 GMT - . Launch Site: ETR Launch Area. Launch Platform: SSBN 636. Launch Vehicle: Poseidon.
  • FOT-22? Follow-on operational missile test - . Nation: USA. Agency: USN. Apogee: 500 km (310 mi).

1976 August 28 - . 09:42 GMT - . Launch Site: ETR Launch Area. Launch Platform: SSBN 641. Launch Vehicle: Poseidon.
  • FOT-23? Follow-on operational missile test - . Nation: USA. Agency: USN. Apogee: 500 km (310 mi).

1976 August 28 - . 09:43 GMT - . Launch Site: ETR Launch Area. Launch Platform: SSBN 641. Launch Vehicle: Poseidon.
  • FOT-23? Follow-on operational missile test - . Nation: USA. Agency: USN. Apogee: 500 km (310 mi).

1976 November 19 - . 17:07 GMT - . Launch Site: ETR Launch Area. Launch Platform: SSBN 617. Launch Vehicle: Poseidon.
  • FOT-24? Follow-on operational missile test - . Nation: USA. Agency: USN. Apogee: 500 km (310 mi).

1976 November 19 - . 17:07 GMT - . Launch Site: ETR Launch Area. Launch Platform: SSBN 617. Launch Vehicle: Poseidon.
  • FOT-24? Follow-on operational missile test - . Nation: USA. Agency: USN. Apogee: 500 km (310 mi).

1976 November 19 - . 19:08 GMT - . Launch Site: ETR Launch Area. Launch Platform: SSBN 617. Launch Vehicle: Poseidon.
  • FOT-24? Follow-on operational missile test - . Nation: USA. Agency: USN. Apogee: 500 km (310 mi).

1976 November 19 - . 19:09 GMT - . Launch Site: ETR Launch Area. Launch Platform: SSBN 617. Launch Vehicle: Poseidon.
  • FOT-24? Follow-on operational missile test - . Nation: USA. Agency: USN. Apogee: 500 km (310 mi).

1976 November 23 - . Launch Site: WTR Launch Area. Launch Platform: SSBN 655. Launch Vehicle: Poseidon.
  • FOT-25? Follow-on operational missile test - . Nation: USA. Agency: USN. Apogee: 500 km (310 mi).

1976 November 23 - . Launch Site: WTR Launch Area. Launch Platform: SSBN 655. Launch Vehicle: Poseidon.
  • FOT-25? Follow-on operational missile test - . Nation: USA. Agency: USN. Apogee: 500 km (310 mi).

1977 January 28 - . 22:36 GMT - . Launch Site: ETR Launch Area. Launch Platform: SSBN 623. Launch Vehicle: Poseidon.
  • OT-26 Operational test - . Nation: USA. Agency: USN. Apogee: 500 km (310 mi).

1977 January 28 - . 22:37 GMT - . Launch Site: ETR Launch Area. Launch Platform: SSBN 623. Launch Vehicle: Poseidon.
  • OT-26 Operational test - . Nation: USA. Agency: USN. Apogee: 500 km (310 mi).

1977 January 28 - . 22:37 GMT - . Launch Site: ETR Launch Area. Launch Platform: SSBN 623. Launch Vehicle: Poseidon.
  • OT-26 Operational test - . Nation: USA. Agency: USN. Apogee: 500 km (310 mi).

1977 January 28 - . 22:37 GMT - . Launch Site: ETR Launch Area. Launch Platform: SSBN 623. Launch Vehicle: Poseidon.
  • OT-26 Operational test - . Nation: USA. Agency: USN. Apogee: 500 km (310 mi).

1977 February 5 - . 03:03 GMT - . Launch Site: ETR Launch Area. Launch Platform: SSBN 628. Launch Vehicle: Poseidon. LV Configuration: Poseidon C3 +1 other?.
  • FOT-27 Follow-on Test launch - . Nation: USA. Agency: USN. Apogee: 500 km (310 mi).

1977 March 24 - . 20:47 GMT - . Launch Site: ETR Launch Area. Launch Platform: SSBN 624. Launch Vehicle: Poseidon.
  • OT-28 Operational test - . Nation: USA. Agency: USN. Apogee: 500 km (310 mi).

1977 March 24 - . 20:47 GMT - . Launch Site: ETR Launch Area. Launch Platform: SSBN 624. Launch Vehicle: Poseidon.
  • OT-28 Operational test - . Nation: USA. Agency: USN. Apogee: 500 km (310 mi).

1977 March 30 - . 12:02 GMT - . Launch Site: ETR Launch Area. Launch Platform: SSBN 654. Launch Vehicle: Poseidon.
  • OT-29 Operational test - . Nation: USA. Agency: USN. Apogee: 500 km (310 mi).

1977 March 30 - . 13:36 GMT - . Launch Site: ETR Launch Area. Launch Platform: SSBN 654. Launch Vehicle: Poseidon.
  • OT-29 Operational test - . Nation: USA. Agency: USN. Apogee: 500 km (310 mi).

1977 May 25 - . 22:57 GMT - . Launch Site: ETR Launch Area. Launch Platform: SSBN 643. Launch Vehicle: Poseidon.
  • OT-30 Operational test - . Nation: USA. Agency: USN. Apogee: 500 km (310 mi).

1977 May 25 - . 23:27 GMT - . Launch Site: ETR Launch Area. Launch Platform: SSBN 643. Launch Vehicle: Poseidon.
  • OT-30 Operational test - . Nation: USA. Agency: USN. Apogee: 500 km (310 mi).

1977 May 25 - . 23:27 GMT - . Launch Site: ETR Launch Area. Launch Platform: SSBN 643. Launch Vehicle: Poseidon.
  • OT-30 Operational test - . Nation: USA. Agency: USN. Apogee: 500 km (310 mi).

1977 June 1 - . 21:46 GMT - . Launch Site: ETR Launch Area. Launch Platform: SSBN 616. Launch Vehicle: Poseidon.
  • OT-31 Operational test - . Nation: USA. Agency: USN. Apogee: 500 km (310 mi).

1977 June 1 - . 21:47 GMT - . Launch Site: ETR Launch Area. Launch Platform: SSBN 616. Launch Vehicle: Poseidon.
  • OT-31 Operational test - . Nation: USA. Agency: USN. Apogee: 500 km (310 mi).

1977 August 3 - . 16:00 GMT - . Launch Site: ETR Launch Area. Launch Platform: SSBN 622. Launch Vehicle: Poseidon.
  • Demonstration and shakedown operations launch - . Nation: USA. Agency: USN. Apogee: 500 km (310 mi).

1977 September 6 - . 21:00 GMT - . Launch Site: ETR Launch Area. Launch Platform: SSBN 625. Launch Vehicle: Poseidon.
  • Demonstration and shakedown operations launch - . Nation: USA. Agency: USN. Apogee: 500 km (310 mi).

1978 March 29 - . Launch Site: ETR Launch Area. Launch Platform: SSBN 626. Launch Vehicle: Poseidon.
  • Demonstration and shakedown operations launch - . Nation: USA. Agency: USN. Apogee: 500 km (310 mi).

1978 April 11 - . 21:59 GMT - . Launch Site: ETR Launch Area. Launch Platform: SSBN 619. Launch Vehicle: Poseidon.
  • OT-32 Operational test - . Nation: USA. Agency: USN. Apogee: 500 km (310 mi).

1978 April 11 - . 21:59 GMT - . Launch Site: ETR Launch Area. Launch Platform: SSBN 619. Launch Vehicle: Poseidon.
  • OT-32 Operational test - . Nation: USA. Agency: USN. Apogee: 500 km (310 mi).

1978 April 11 - . 22:00 GMT - . Launch Site: ETR Launch Area. Launch Platform: SSBN 619. Launch Vehicle: Poseidon.
  • OT-32 Operational test - . Nation: USA. Agency: USN. Apogee: 500 km (310 mi).

1978 April 11 - . 22:00 GMT - . Launch Site: ETR Launch Area. Launch Platform: SSBN 619. Launch Vehicle: Poseidon.
  • OT-32 Operational test - . Nation: USA. Agency: USN. Apogee: 500 km (310 mi).

1978 April 24 - . 09:35 GMT - . Launch Site: ETR Launch Area. Launch Platform: SSBN 645. Launch Vehicle: Poseidon.
  • OT-33 Operational test - . Nation: USA. Agency: USN. Apogee: 500 km (310 mi).

1978 April 24 - . 09:35 GMT - . Launch Site: ETR Launch Area. Launch Platform: SSBN 645. Launch Vehicle: Poseidon.
  • OT-33 Operational test - . Nation: USA. Agency: USN. Apogee: 500 km (310 mi).

1978 April 24 - . 09:36 GMT - . Launch Site: ETR Launch Area. Launch Platform: SSBN 645. Launch Vehicle: Poseidon.
  • OT-33 Operational test - . Nation: USA. Agency: USN. Apogee: 500 km (310 mi).

1978 April 24 - . 09:36 GMT - . Launch Site: ETR Launch Area. Launch Platform: SSBN 645. Launch Vehicle: Poseidon.
  • OT-33 Operational test - . Nation: USA. Agency: USN. Apogee: 500 km (310 mi).

1978 May 12 - . 23:11 GMT - . Launch Site: ETR Launch Area. Launch Platform: SSBN 623. Launch Vehicle: Poseidon.
  • OT-34 Operational test - . Nation: USA. Agency: USN. Apogee: 500 km (310 mi).

1978 May 12 - . 23:12 GMT - . Launch Site: ETR Launch Area. Launch Platform: SSBN 623. Launch Vehicle: Poseidon.
  • OT-34 Operational test - . Nation: USA. Agency: USN. Apogee: 500 km (310 mi).

1978 May 12 - . 23:12 GMT - . Launch Site: ETR Launch Area. Launch Platform: SSBN 623. Launch Vehicle: Poseidon.
  • OT-34 Operational test - . Nation: USA. Agency: USN. Apogee: 500 km (310 mi).

1978 May 12 - . 23:13 GMT - . Launch Site: ETR Launch Area. Launch Platform: SSBN 623. Launch Vehicle: Poseidon.
  • OT-34 Operational test - . Nation: USA. Agency: USN. Apogee: 500 km (310 mi).

1978 May 15 - . 21:00 GMT - . Launch Site: ETR Launch Area. Launch Platform: SSBN 629. Launch Vehicle: Poseidon.
  • Demonstration and shakedown operations launch - . Nation: USA. Agency: USN. Apogee: 500 km (310 mi).

1978 May 21 - . Launch Site: ETR Launch Area. Launch Platform: SSBN 658. Launch Vehicle: Poseidon.
  • OT-35 Operational test - . Nation: USA. Agency: USN. Apogee: 500 km (310 mi).

1978 May 21 - . 12:22 GMT - . Launch Site: ETR Launch Area. Launch Platform: SSBN 658. Launch Vehicle: Poseidon.
  • OT-35 Operational test - . Nation: USA. Agency: USN. Apogee: 500 km (310 mi).

1978 May 21 - . 12:23 GMT - . Launch Site: ETR Launch Area. Launch Platform: SSBN 658. Launch Vehicle: Poseidon.
  • OT-35 Operational test - . Nation: USA. Agency: USN. Apogee: 500 km (310 mi).

1978 May 21 - . 12:55 GMT - . Launch Site: ETR Launch Area. Launch Platform: SSBN 658. Launch Vehicle: Poseidon.
  • OT-35 Operational test - . Nation: USA. Agency: USN. Apogee: 500 km (310 mi).

1979 February 19 - . Launch Site: ETR Launch Area. Launch Platform: SSBN 645. Launch Vehicle: Poseidon.
  • FOT-36 Follow-on operational missile test - . Nation: USA. Agency: USN. Apogee: 500 km (310 mi).

1979 February 19 - . 03:33 GMT - . Launch Site: ETR Launch Area. Launch Platform: SSBN 645. Launch Vehicle: Poseidon.
  • FOT-36 Follow-on operational missile test - . Nation: USA. Agency: USN. Apogee: 500 km (310 mi).

1979 February 19 - . 03:35 GMT - . Launch Site: ETR Launch Area. Launch Platform: SSBN 645. Launch Vehicle: Poseidon.
  • FOT-36 Follow-on operational missile test - . Nation: USA. Agency: USN. Apogee: 500 km (310 mi).

1979 February 19 - . 05:00 GMT - . Launch Site: ETR Launch Area. Launch Platform: SSBN 645. Launch Vehicle: Poseidon.
  • FOT-36 Follow-on operational missile test - . Nation: USA. Agency: USN. Apogee: 500 km (310 mi).

1979 March 5 - . 18:47 GMT - . Launch Site: ETR Launch Area. Launch Platform: SSBN 642. Launch Vehicle: Poseidon.
  • OT-37 Operational missile test - . Nation: USA. Agency: USN. Apogee: 500 km (310 mi).

1979 March 5 - . 18:48 GMT - . Launch Site: ETR Launch Area. Launch Platform: SSBN 642. Launch Vehicle: Poseidon.
  • OT-37 Operational missile test - . Nation: USA. Agency: USN. Apogee: 500 km (310 mi).

1979 March 5 - . 20:07 GMT - . Launch Site: ETR Launch Area. Launch Platform: SSBN 642. Launch Vehicle: Poseidon.
  • OT-37 Operational missile test - . Nation: USA. Agency: USN. Apogee: 500 km (310 mi).

1979 March 5 - . 22:25 GMT - . Launch Site: ETR Launch Area. Launch Platform: SSBN 642. Launch Vehicle: Poseidon.
  • OT-37 Operational missile test - . Nation: USA. Agency: USN. Apogee: 500 km (310 mi).

1979 March 23 - . 22:25 GMT - . Launch Site: ETR Launch Area. Launch Platform: SSBN 630. Launch Vehicle: Poseidon. LV Configuration: Poseidon C3E.
  • Demonstration and shakedown operations launch - . Nation: USA. Agency: USN. Apogee: 500 km (310 mi).

1979 May 26 - . Launch Site: ETR Launch Area. Launch Platform: SSBN 631. Launch Vehicle: Poseidon. LV Configuration: Poseidon C3E.
  • Demonstration and shakedown operations launch - . Nation: USA. Agency: USN. Apogee: 500 km (310 mi).

1979 October 23 - . 21:51 GMT - . Launch Site: ETR Launch Area. Launch Platform: SSBN 628. Launch Vehicle: Poseidon.
  • Demonstration and shakedown operations launch - . Nation: USA. Agency: USN. Apogee: 500 km (310 mi).

1980 February 3 - . 01:12 GMT - . Launch Site: ETR Launch Area. Launch Platform: SSBN 654. Launch Vehicle: Poseidon.
  • FOT-38? Follow-on operational missile test - . Nation: USA. Agency: USN. Apogee: 500 km (310 mi).

1980 February 3 - . 01:13 GMT - . Launch Site: ETR Launch Area. Launch Platform: SSBN 654. Launch Vehicle: Poseidon.
  • FOT-38? Follow-on operational missile test - . Nation: USA. Agency: USN. Apogee: 500 km (310 mi).

1980 February 3 - . 01:13 GMT - . Launch Site: ETR Launch Area. Launch Platform: SSBN 654. Launch Vehicle: Poseidon.
  • FOT-38? Follow-on operational missile test - . Nation: USA. Agency: USN. Apogee: 500 km (310 mi).

1980 February 4 - . 02:42 GMT - . Launch Site: ETR Launch Area. Launch Platform: SSBN 654. Launch Vehicle: Poseidon.
  • FOT-39? Follow-on operational missile test - . Nation: USA. Agency: USN. Apogee: 500 km (310 mi).

1980 February 13 - . 22:00 GMT - . Launch Site: ETR Launch Area. Launch Platform: SSBN 635. Launch Vehicle: Poseidon.
  • Demonstration and shakedown operations launch - . Nation: USA. Agency: USN. Apogee: 500 km (310 mi).

1980 April 21 - . 21:47 GMT - . Launch Site: ETR Launch Area. Launch Platform: SSBN 656. Launch Vehicle: Poseidon.
  • FOT-40? Follow-on operational missile test - . Nation: USA. Agency: USN. Apogee: 500 km (310 mi).

1980 April 21 - . 21:47 GMT - . Launch Site: ETR Launch Area. Launch Platform: SSBN 656. Launch Vehicle: Poseidon.
  • FOT-40? Follow-on operational missile test - . Nation: USA. Agency: USN. Apogee: 500 km (310 mi).

1980 April 21 - . 21:47 GMT - . Launch Site: ETR Launch Area. Launch Platform: SSBN 656. Launch Vehicle: Poseidon.
  • FOT-40? Follow-on operational missile test - . Nation: USA. Agency: USN. Apogee: 500 km (310 mi).

1980 April 21 - . 21:48 GMT - . Launch Site: ETR Launch Area. Launch Platform: SSBN 656. Launch Vehicle: Poseidon.
  • FOT-40? Follow-on operational missile test - . Nation: USA. Agency: USN. Apogee: 500 km (310 mi).

1980 July 11 - . 16:01 GMT - . Launch Site: ETR Launch Area. Launch Platform: SSBN 642. Launch Vehicle: Poseidon.
  • FOT-41? Follow-on operational missile test - . Nation: USA. Agency: USN. Apogee: 500 km (310 mi).

1980 July 11 - . 16:01 GMT - . Launch Site: ETR Launch Area. Launch Platform: SSBN 642. Launch Vehicle: Poseidon.
  • FOT-41? Follow-on operational missile test - . Nation: USA. Agency: USN. Apogee: 500 km (310 mi).

1980 July 11 - . 16:02 GMT - . Launch Site: ETR Launch Area. Launch Platform: SSBN 642. Launch Vehicle: Poseidon.
  • FOT-41? Follow-on operational missile test - . Nation: USA. Agency: USN. Apogee: 500 km (310 mi).

1980 July 11 - . 16:02 GMT - . Launch Site: ETR Launch Area. Launch Platform: SSBN 642. Launch Vehicle: Poseidon.
  • FOT-41? Follow-on operational missile test - . Nation: USA. Agency: USN. Apogee: 500 km (310 mi).

1980 July 14 - . 22:00 GMT - . Launch Site: ETR Launch Area. Launch Platform: SSBN 634. Launch Vehicle: Poseidon.
  • DASO-48 demonstration and shakedown operations launch - . Nation: USA. Agency: USN. Apogee: 500 km (310 mi).

1980 August 20 - . 21:19 GMT - . Launch Site: ETR Launch Area. Launch Platform: SSBN 625. Launch Vehicle: Poseidon.
  • FOT-42? Follow-on operational missile test - . Nation: USA. Agency: USN. Apogee: 500 km (310 mi).

1980 August 20 - . 21:19 GMT - . Launch Site: ETR Launch Area. Launch Platform: SSBN 625. Launch Vehicle: Poseidon.
  • FOT-42? Follow-on operational missile test - . Nation: USA. Agency: USN. Apogee: 500 km (310 mi).

1980 August 20 - . 21:27 GMT - . Launch Site: ETR Launch Area. Launch Platform: SSBN 625. Launch Vehicle: Poseidon.
  • FOT-42? Follow-on operational missile test - . Nation: USA. Agency: USN. Apogee: 500 km (310 mi).

1980 August 20 - . 21:32 GMT - . Launch Site: ETR Launch Area. Launch Platform: SSBN 625. Launch Vehicle: Poseidon.
  • FOT-42? Follow-on operational missile test - . Nation: USA. Agency: USN. Apogee: 500 km (310 mi).

1981 June 19 - . Launch Site: ETR Launch Area. Launch Platform: SSBN 644. Launch Vehicle: Poseidon.
  • FOT-43? Follow-on operational missile test - . Nation: USA. Agency: USN. Apogee: 500 km (310 mi).

1981 June 19 - . Launch Site: ETR Launch Area. Launch Platform: SSBN 644. Launch Vehicle: Poseidon.
  • FOT-43? Follow-on operational missile test - . Nation: USA. Agency: USN. Apogee: 500 km (310 mi).

1981 June 19 - . Launch Site: ETR Launch Area. Launch Platform: SSBN 644. Launch Vehicle: Poseidon.
  • FOT-43? Follow-on operational missile test - . Nation: USA. Agency: USN. Apogee: 500 km (310 mi).

1981 June 19 - . Launch Site: ETR Launch Area. Launch Platform: SSBN 644. Launch Vehicle: Poseidon.
  • FOT-43? Follow-on operational missile test - . Nation: USA. Agency: USN. Apogee: 500 km (310 mi).

1981 July 11 - . Launch Site: ETR Launch Area. Launch Platform: SSBN 654. Launch Vehicle: Poseidon.
  • FOT-44? Follow-on operational missile test - . Nation: USA. Agency: USN. Apogee: 500 km (310 mi).

1981 July 11 - . Launch Site: ETR Launch Area. Launch Platform: SSBN 654. Launch Vehicle: Poseidon.
  • FOT-44? Follow-on operational missile test - . Nation: USA. Agency: USN. Apogee: 500 km (310 mi).

1981 July 11 - . Launch Site: ETR Launch Area. Launch Platform: SSBN 654. Launch Vehicle: Poseidon.
  • FOT-44? Follow-on operational missile test - . Nation: USA. Agency: USN. Apogee: 500 km (310 mi).

1981 July 11 - . Launch Site: ETR Launch Area. Launch Platform: SSBN 654. Launch Vehicle: Poseidon.
  • FOT-44? Follow-on operational missile test - . Nation: USA. Agency: USN. Apogee: 500 km (310 mi).

1981 August 22 - . 01:00 GMT - . Launch Site: ETR Launch Area. Launch Platform: SSBN 636. Launch Vehicle: Poseidon.
  • Demonstration and shakedown operations launch - . Nation: USA. Agency: USN. Apogee: 500 km (310 mi).

1982 February 28 - . Launch Site: ETR Launch Area. Launch Platform: SSBN 628. Launch Vehicle: Poseidon.
  • FOT-45? Follow-on operational missile test - . Nation: USA. Agency: USN. Apogee: 500 km (310 mi).

1982 February 28 - . Launch Site: ETR Launch Area. Launch Platform: SSBN 628. Launch Vehicle: Poseidon.
  • FOT-45? Follow-on operational missile test - . Nation: USA. Agency: USN. Apogee: 500 km (310 mi).

1982 May 25 - . Launch Site: ETR Launch Area. Launch Platform: SSBN 619. Launch Vehicle: Poseidon.
  • FOT-46? Follow-on operational missile test - . Nation: USA. Agency: USN. Apogee: 500 km (310 mi).

1982 May 25 - . Launch Site: ETR Launch Area. Launch Platform: SSBN 619. Launch Vehicle: Poseidon.
  • FOT-46? Follow-on operational missile test - . Nation: USA. Agency: USN. Apogee: 500 km (310 mi).

1982 May 25 - . Launch Site: ETR Launch Area. Launch Platform: SSBN 619. Launch Vehicle: Poseidon.
  • FOT-46? Follow-on operational missile test - . Nation: USA. Agency: USN. Apogee: 500 km (310 mi).

1982 May 25 - . 23:13 GMT - . Launch Site: ETR Launch Area. Launch Platform: SSBN 619. Launch Vehicle: Poseidon.
  • FOT-46? Follow-on operational missile test - . Nation: USA. Agency: USN. Apogee: 500 km (310 mi).

1982 June 26 - . Launch Site: ETR Launch Area. Launch Platform: SSBN 620. Launch Vehicle: Poseidon.
  • Follow-on operational missile test - . Nation: USA. Agency: USN. Apogee: 500 km (310 mi).

1982 June 26 - . 02:57 GMT - . Launch Site: ETR Launch Area. Launch Platform: SSBN 620. Launch Vehicle: Poseidon.
  • Follow-on operational missile test - . Nation: USA. Agency: USN. Apogee: 500 km (310 mi).

1983 January 10 - . Launch Site: ETR Launch Area. Launch Platform: SSBN 624. Launch Vehicle: Poseidon.
  • Follow-on operational missile test - . Nation: USA. Agency: USN. Apogee: 500 km (310 mi).

1983 January 10 - . 09:19 GMT - . Launch Site: ETR Launch Area. Launch Platform: SSBN 624. Launch Vehicle: Poseidon.
  • Follow-on operational missile test - . Nation: USA. Agency: USN. Apogee: 500 km (310 mi).

1983 March 21 - . Launch Site: ETR Launch Area. Launch Platform: SSBN 635. Launch Vehicle: Poseidon.
  • Follow-on operational missile test - . Nation: USA. Agency: USN. Apogee: 500 km (310 mi).

1983 March 21 - . 02:54 GMT - . Launch Site: ETR Launch Area. Launch Platform: SSBN 635. Launch Vehicle: Poseidon.
  • Follow-on operational missile test - . Nation: USA. Agency: USN. Apogee: 500 km (310 mi).

1983 April 8 - . 19:00 GMT - . Launch Site: ETR Launch Area. Launch Platform: SSBN 642. Launch Vehicle: Poseidon.
  • Demonstration and shakedown operations launch - . Nation: USA. Agency: USN. Apogee: 500 km (310 mi).

1983 July 23 - . 19:15 GMT - . Launch Site: ETR Launch Area. Launch Platform: SSBN 645. Launch Vehicle: Poseidon.
  • Demonstration and shakedown operations launch - . Nation: USA. Agency: USN. Apogee: 500 km (310 mi).

1983 July 28 - . Launch Site: ETR Launch Area. Launch Platform: SSBN 622. Launch Vehicle: Poseidon.
  • Follow-on operational missile test - . Nation: USA. Agency: USN. Apogee: 500 km (310 mi).

1983 July 28 - . Launch Site: ETR Launch Area. Launch Platform: SSBN 622. Launch Vehicle: Poseidon.
  • Follow-on operational missile test - . Nation: USA. Agency: USN. Apogee: 500 km (310 mi).

1983 July 28 - . Launch Site: ETR Launch Area. Launch Platform: SSBN 622. Launch Vehicle: Poseidon.
  • Follow-on operational missile test - . Nation: USA. Agency: USN. Apogee: 500 km (310 mi).

1983 July 28 - . 05:22 GMT - . Launch Site: ETR Launch Area. Launch Platform: SSBN 622. Launch Vehicle: Poseidon.
  • Follow-on operational missile test - . Nation: USA. Agency: USN. Apogee: 500 km (310 mi).

1983 September 2 - . 16:00 GMT - . Launch Site: ETR Launch Area. Launch Platform: SSBN 616. Launch Vehicle: Poseidon.
  • Demonstration and shakedown operations launch - . Nation: USA. Agency: USN. Apogee: 500 km (310 mi).

1983 October 13 - . Launch Site: ETR Launch Area. Launch Platform: SSBN 623. Launch Vehicle: Poseidon.
  • Follow-on operational missile test - . Nation: USA. Agency: USN. Apogee: 500 km (310 mi).

1983 October 13 - . 06:41 GMT - . Launch Site: ETR Launch Area. Launch Platform: SSBN 623. Launch Vehicle: Poseidon.
  • Follow-on operational missile test - . Nation: USA. Agency: USN. Apogee: 500 km (310 mi).

1984 March 19 - . 17:00 GMT - . Launch Site: ETR Launch Area. Launch Platform: SSBN 644. Launch Vehicle: Poseidon.
  • Demonstration and shakedown operations launch - . Nation: USA. Agency: USN. Apogee: 500 km (310 mi).

1984 April 9 - . Launch Site: ETR Launch Area. Launch Platform: SSBN 645. Launch Vehicle: Poseidon.
  • Follow-on operational missile test - . Nation: USA. Agency: USN. Apogee: 500 km (310 mi).

1984 April 9 - . 05:16 GMT - . Launch Site: ETR Launch Area. Launch Platform: SSBN 645. Launch Vehicle: Poseidon.
  • Follow-on operational missile test - . Nation: USA. Agency: USN. Apogee: 500 km (310 mi).

1984 June 29 - . Launch Site: ETR Launch Area. Launch Platform: SSBN 625. Launch Vehicle: Poseidon.
  • Follow-on operational missile test - . Nation: USA. Agency: USN. Apogee: 500 km (310 mi).

1984 June 29 - . 20:03 GMT - . Launch Site: ETR Launch Area. Launch Platform: SSBN 625. Launch Vehicle: Poseidon.
  • Follow-on operational missile test - . Nation: USA. Agency: USN. Apogee: 500 km (310 mi).

1984 July 24 - . 17:00 GMT - . Launch Site: ETR Launch Area. Launch Platform: SSBN 654. Launch Vehicle: Poseidon.
  • Demonstration and shakedown operations launch - . Nation: USA. Agency: USN. Apogee: 500 km (310 mi).

1985 March 6 - . Launch Site: ETR Launch Area. Launch Platform: SSBN 623. Launch Vehicle: Poseidon.
  • Follow-on operational missile test - . Nation: USA. Agency: USN. Apogee: 500 km (310 mi).

1985 March 6 - . Launch Site: ETR Launch Area. Launch Platform: SSBN 623. Launch Vehicle: Poseidon.
  • Follow-on operational missile test - . Nation: USA. Agency: USN. Apogee: 500 km (310 mi).

1985 March 6 - . Launch Site: ETR Launch Area. Launch Platform: SSBN 623. Launch Vehicle: Poseidon.
  • Follow-on operational missile test - . Nation: USA. Agency: USN. Apogee: 500 km (310 mi).

1985 March 6 - . 03:42 GMT - . Launch Site: ETR Launch Area. Launch Platform: SSBN 623. Launch Vehicle: Poseidon.
  • Follow-on operational missile test - . Nation: USA. Agency: USN. Apogee: 500 km (310 mi).

1985 June 13 - . Launch Site: ETR Launch Area. Launch Platform: SSBN 644. Launch Vehicle: Poseidon.
  • Follow-on operational missile test - . Nation: USA. Agency: USN. Apogee: 500 km (310 mi).

1985 June 13 - . Launch Site: ETR Launch Area. Launch Platform: SSBN 644. Launch Vehicle: Poseidon.
  • Follow-on operational missile test - . Nation: USA. Agency: USN. Apogee: 500 km (310 mi).

1985 June 13 - . Launch Site: ETR Launch Area. Launch Platform: SSBN 644. Launch Vehicle: Poseidon.
  • Follow-on operational missile test - . Nation: USA. Agency: USN. Apogee: 500 km (310 mi).

1985 June 13 - . Launch Site: ETR Launch Area. Launch Platform: SSBN 644. Launch Vehicle: Poseidon.
  • Follow-on operational missile test - . Nation: USA. Agency: USN. Apogee: 500 km (310 mi).

1985 August 10 - . 17:00 GMT - . Launch Site: ETR Launch Area. Launch Platform: SSBN 656. Launch Vehicle: Poseidon.
  • Demonstration and shakedown operations launch - . Nation: USA. Agency: USN. Apogee: 500 km (310 mi).

1985 September 2 - . Launch Site: ETR Launch Area. Launch Platform: SSBN 626. Launch Vehicle: Poseidon.
  • Follow-on operational missile test - . Nation: USA. Agency: USN. Apogee: 500 km (310 mi).

1985 September 2 - . 05:03 GMT - . Launch Site: ETR Launch Area. Launch Platform: SSBN 626. Launch Vehicle: Poseidon.
  • Follow-on operational missile test - . Nation: USA. Agency: USN. Apogee: 500 km (310 mi).

1986 May 20 - . 16:45 GMT - . Launch Site: ETR Launch Area. Launch Platform: SSBN 659. Launch Vehicle: Poseidon.
  • Demonstration and shakedown operations launch - . Nation: USA. Agency: USN. Apogee: 500 km (310 mi).

1986 June 4 - . Launch Site: ETR Launch Area. Launch Platform: SSBN 620. Launch Vehicle: Poseidon.
  • Follow-on operational missile test - . Nation: USA. Agency: USN. Apogee: 500 km (310 mi).

1986 June 4 - . Launch Site: ETR Launch Area. Launch Platform: SSBN 620. Launch Vehicle: Poseidon.
  • Follow-on operational missile test - . Nation: USA. Agency: USN. Apogee: 500 km (310 mi).

1986 June 4 - . Launch Site: ETR Launch Area. Launch Platform: SSBN 620. Launch Vehicle: Poseidon.
  • Follow-on operational missile test - . Nation: USA. Agency: USN. Apogee: 500 km (310 mi).

1986 June 4 - . 21:34 GMT - . Launch Site: ETR Launch Area. Launch Platform: SSBN 620. Launch Vehicle: Poseidon.
  • Follow-on operational missile test - . Nation: USA. Agency: USN. Apogee: 500 km (310 mi).

1986 November 4 - . Launch Site: ETR Launch Area. Launch Platform: SSBN 644. Launch Vehicle: Poseidon.
  • Follow-on operational missile test - . Nation: USA. Agency: USN. Apogee: 500 km (310 mi).

1986 November 4 - . Launch Site: ETR Launch Area. Launch Platform: SSBN 644. Launch Vehicle: Poseidon.
  • Follow-on operational missile test - . Nation: USA. Agency: USN. Apogee: 500 km (310 mi).

1986 November 4 - . Launch Site: ETR Launch Area. Launch Platform: SSBN 644. Launch Vehicle: Poseidon.
  • Follow-on operational missile test - . Nation: USA. Agency: USN. Apogee: 500 km (310 mi).

1986 November 4 - . 20:59 GMT - . Launch Site: ETR Launch Area. Launch Platform: SSBN 644. Launch Vehicle: Poseidon.
  • Follow-on operational missile test - . Nation: USA. Agency: USN. Apogee: 500 km (310 mi).

1987 January 31 - . 19:30 GMT - . Launch Site: ETR Launch Area. Launch Platform: SSBN 628. Launch Vehicle: Poseidon.
  • Demonstration and shakedown operations launch - . Nation: USA. Agency: USN. Apogee: 500 km (310 mi).

1987 July 31 - . Launch Site: ETR Launch Area. Launch Platform: SSBN 631. Launch Vehicle: Poseidon.
  • Demonstration and shakedown operations launch - . Nation: USA. Agency: USN. Apogee: 500 km (310 mi).

1987 September 12 - . Launch Site: ETR Launch Area. Launch Platform: SSBN 622. Launch Vehicle: Poseidon.
  • Follow-on operational missile test - . Nation: USA. Agency: USN. Apogee: 500 km (310 mi).

1987 September 12 - . Launch Site: ETR Launch Area. Launch Platform: SSBN 622. Launch Vehicle: Poseidon.
  • Follow-on operational missile test - . Nation: USA. Agency: USN. Apogee: 500 km (310 mi).

1987 September 12 - . Launch Site: ETR Launch Area. Launch Platform: SSBN 622. Launch Vehicle: Poseidon.
  • Follow-on operational missile test - . Nation: USA. Agency: USN. Apogee: 500 km (310 mi).

1987 September 12 - . 05:28 GMT - . Launch Site: ETR Launch Area. Launch Platform: SSBN 622. Launch Vehicle: Poseidon.
  • Follow-on operational missile test - . Nation: USA. Agency: USN. Apogee: 500 km (310 mi).

1987 October 16 - . Launch Site: ETR Launch Area. Launch Platform: SSBN 654. Launch Vehicle: Poseidon.
  • Follow-on operational missile test - . Nation: USA. Agency: USN. Apogee: 500 km (310 mi).

1987 October 16 - . Launch Site: ETR Launch Area. Launch Platform: SSBN 654. Launch Vehicle: Poseidon.
  • Follow-on operational missile test - . Nation: USA. Agency: USN. Apogee: 500 km (310 mi).

1987 October 16 - . Launch Site: ETR Launch Area. Launch Platform: SSBN 654. Launch Vehicle: Poseidon.
  • Follow-on operational missile test - . Nation: USA. Agency: USN. Apogee: 500 km (310 mi).

1987 October 16 - . 16:17 GMT - . Launch Site: ETR Launch Area. Launch Platform: SSBN 654. Launch Vehicle: Poseidon.
  • Follow-on operational missile test - . Nation: USA. Agency: USN. Apogee: 500 km (310 mi).

1988 April 1 - . Launch Site: ETR Launch Area. Launch Platform: SSBN 628. Launch Vehicle: Poseidon.
  • Follow-on operational missile test - . Nation: USA. Agency: USN. Apogee: 500 km (310 mi).

1988 April 1 - . Launch Site: ETR Launch Area. Launch Platform: SSBN 628. Launch Vehicle: Poseidon.
  • Follow-on operational missile test - . Nation: USA. Agency: USN. Apogee: 500 km (310 mi).

1988 April 1 - . Launch Site: ETR Launch Area. Launch Platform: SSBN 628. Launch Vehicle: Poseidon.
  • Follow-on operational missile test - . Nation: USA. Agency: USN. Apogee: 500 km (310 mi).

1988 April 1 - . 20:19 GMT - . Launch Site: ETR Launch Area. Launch Platform: SSBN 628. Launch Vehicle: Poseidon.
  • Follow-on operational missile test - . Nation: USA. Agency: USN. Apogee: 500 km (310 mi).

1989 March 9 - . 21:33 GMT - . Launch Site: ETR Launch Area. Launch Platform: SSBN 645. Launch Vehicle: Poseidon.
  • Demonstration and shakedown operations launch - . Nation: USA. Agency: USN. Apogee: 500 km (310 mi).

1989 September 29 - . Launch Site: ETR Launch Area. Launch Platform: SSBN 617. Launch Vehicle: Poseidon.
  • Demonstration and shakedown operations launch - . Nation: USA. Agency: USN. Apogee: 500 km (310 mi).

1990 April 30 - . Launch Site: ETR Launch Area. Launch Platform: SSBN 642. Launch Vehicle: Poseidon.
  • DASO-61 demonstration and shakedown operations launch - . Nation: USA. Agency: USN. Apogee: 500 km (310 mi).

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