Encyclopedia Astronautica
Trident C-4



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Trident C-4
Credit: via Andreas Parsch
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Trident C-4
American intercontinental ballistic missile. 3 stages, inertial guided, warhead: nuclear MIRV. Could replace Poseidon in existing submarine launch tubes.

In 1971, the US Navy issued a requirement for a submarine-launched, multiple warhead, ballistic missile with intercontinental range and a stellar-inertial navigation system. This would give the Navy capability against Soviet missile siloes and other hardened targets. Lockheed proposed a two-phase program. Trident C-4 would fit in launch tubes in existing submarines, with a range 50% greater than Poseidon. Trident II D-5 would have longer stages, requiring a new class of submarine to be built to accommodate it, but have the desired intercontinental range. Lockheed began development of the Trident C-4 in 1974. First launch was in January 1977, and first submerged launch in July 1979. The missile made its first patrol in October 1979. It replaced all Poseidons in the fleet by 1986, reaching a peak deployment in 384 missile tubes. Under post-Cold War arms reduction agreements, all Trident C-4's were withdrawn from service by 2005.

Trident C-4 achieved the performance improvement through use of lightweight Kevlar motor casings, buried engine nozzles, high-performance propellants, and trajectory shaping instead of thrust termination for trajectory control. An aerospike extended from the blunt nose after launch, allowing more propellant to be packed in by eliminating the need for a nose cone.

Failures: 7. Success Rate: 95.83%. First Fail Date: 1978-04-12. Last Fail Date: 1988-02-06. Development Cost $: 3,755.900 million. Recurring Price $: 12.475 million in 1982 dollars. Flyaway Unit Cost $: 10.300 million in 1982 dollars. Guidance contractor: Draper, Raytheon. Standard warhead: 1,317 kg (2,903 lb). Maximum range: 7,400 km (4,500 mi). Number Standard Warheads: 8. Standard RV: Mk. 400. Standard warhead: W76. Warhead yield: 100 KT. CEP: 0.40 km (0.24 mi). Boost Propulsion: Solid rocket. Initial Operational Capability: 1979. Total Number Built: 630.

Historical Essay © Andreas Parsch

Lockheed UGM-96 Trident

The UGM-96 Trident C-4 is a long-range derivative of the UGM-73 Poseidon C-3 SLBM (Submarine-Launched Ballistic Missile), and is one of the two types of SLBM currently in service with the U.S. Navy.

In 1971, the U.S. Navy started the ULMS (Undersea Long-Range Missile System) program to develop an SLBM with significantly longer range than the UGM-73 Poseidon. Prime contractor Lockheed proposed a two-phase program. Initially, an advanced derivative of Poseidon (tentatively called EXPO - Extended-Range Poseidon) would be developed, which was to have the same external dimensions as Poseidon to make use of existing submarines. Later on, the ultimate long-range SLBM would be developed as a larger missile, together with a new class of ballistic missile submarines. The EXPO concept evolved into the Trident I C-4, while the new enlarged design eventually became the UGM-133 Trident II D-5.

In 1974, Lockheed was awarded a development contract for the UGM-96A Trident I C-4 missile. The adoption of the SLBM designator C-4 clearly indicated that Trident I was regarded as an evolutional step from Poseidon C-3, compatible with the latter's launch platforms. To achieve the desired range of 7400 km (4000 nm) (compared to 5280 km (2850 nm) for Poseidon), several new technologies were used. One of the most important was a completely new propulsion system. The rocket motors use a new higher-energy propellant, light-weight Kevlar casings, and make more efficient use of the available fuel by completely buring out the motor instead of neutralizing the thrust for trajectory control. Another innovative feature of the UGM-96A is an extendable "aero-spike", which is extended from the nose after launch. This spike creates a shock cone, reducing frontal drag by about 50%. The aero-spike allowed the use of a significantly blunter missile nose, which not only houses the warhead section, but also a third rocket stage. The first flight of an UGM-96A occurred in January 1977, and the first launch from a submarine - USS Francis Scott Key (SSBN-657) - succeeded in July 1979. In October that year, SSBN-657 became the first submarine to go on patrol with the Trident I C-4.

The UGM-96A SLBM's warhead section normally consists of eight MK 4 independent reentry vehicles, each fitted with a 100 kT W-76 thermonuclear warhead. Up to 14 MIRVs can be loaded, of course reducing the range of the missile. The Trident I is also equipped with a new MK 5 stellar-interial navigation system, which increases accuracy to about 380 m (1250 ft) CEP.

The Trident I C-4 not only replaced all UGM-73 Poseidon missiles, but was also deployed on the first Ohio class (SSBN-726) submarines. These SSBNs are designed to carry 24 of the larger UGM-133 Trident II D-5 missiles, but the first eight were equipped with Trident I because the D-5 was not yet available. The Strategic Arms Reduction Treaty (START) II limits the number of Trident submarines of the U.S. Navy to 18. All 18 Ohio class boats have been completed by 1997, and therefore all earlier SSBNs have been decommissioned. Between 1977 and 1986, Lockheed built about 600 UGM-96A missiles, for a peak deployment level of 384.

Current plans of the U.S. Navy call for a refit of the four newer Trident I C-4 SSBNs with the Trident II D-5, and the first D-5 conversion is nearing completion in early 2002, with the next one to be started soon. The four oldest Trident I SSBNs will be retired as ballistic missile submarines, but at least two of them are currently planned to be converted to SSGNs (Guided Missile Submarines) as platform for the UGM-109 Tomahawk SLCM. In any case, it is expected that the UGM-96A Trident I C-4 missile will be out of the operational inventory by 2005.

Specifications

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

Data for UGM-96A:

Length 10.39 m (34 ft 1.2 in)
Diameter 1.88 m (6 ft 2 in)
Weight 33000 kg (73000 lb)
Range 7400 km (4000 nm)
Propulsion 1st stage: Thiokol solid-fueled rocket
2nd stage: Hercules solid-fueled rocket
3rd stage: United Technologies Corp. solid-fueled rocket
Warhead 8x W-76 thermonuclear (100 kT) in 8x MK 4 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: Trident 1; Poseidon C-4; UGM-96A; Trident C-4.
Location: Sunnyvale, CA, USA.
Status: Active.
Gross mass: 29,475 kg (64,981 lb).
Payload: 1,317 kg (2,903 lb).
Height: 10.39 m (34.08 ft).
Diameter: 1.88 m (6.16 ft).
Span: 1.88 m (6.16 ft).
Apogee: 1,000 km (600 mi).
First Launch: 1977.01.18.
Last Launch: 2001.12.18.
Number: 174 .

More... - Chronology...


Associated Countries
See also
  • Trident US Navy submarine-launched ballistic missiles, which superseded the Polaris. More...
  • 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...

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 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

Trident C-4 Chronology


1977 January 18 - . 19:03 GMT - . Launch Site: Cape Canaveral. Launch Complex: Cape Canaveral LC25C. LV Family: Trident. Launch Vehicle: Trident C-4. LV Configuration: Trident C-4 C4X-1.
  • Test mission - . Nation: USA. Agency: USN. Apogee: 1,000 km (600 mi).

1977 February 15 - . 23:10 GMT - . Launch Site: Cape Canaveral. Launch Complex: Cape Canaveral LC25C. LV Family: Trident. Launch Vehicle: Trident C-4. LV Configuration: Trident C-4 C4X-2.
  • Test mission - . Nation: USA. Agency: USN. Apogee: 1,000 km (600 mi).

1977 March 28 - . 15:17 GMT - . Launch Site: Cape Canaveral. Launch Complex: Cape Canaveral LC25C. LV Family: Trident. Launch Vehicle: Trident C-4. LV Configuration: Trident C-4 C4X-3.
  • Test mission - . Nation: USA. Agency: USN. Apogee: 1,000 km (600 mi).

1977 April 29 - . 14:09 GMT - . Launch Site: Cape Canaveral. Launch Complex: Cape Canaveral LC25C. LV Family: Trident. Launch Vehicle: Trident C-4. LV Configuration: Trident C-4 C4X-6.
  • Test mission - . Nation: USA. Agency: USN. Apogee: 1,000 km (600 mi).

1977 June 27 - . 11:00 GMT - . Launch Site: Cape Canaveral. Launch Complex: Cape Canaveral LC25C. LV Family: Trident. Launch Vehicle: Trident C-4. LV Configuration: Trident C-4 C4X-8.
  • Test mission - . Nation: USA. Agency: USN. Apogee: 1,000 km (600 mi).

1977 August 18 - . 19:18 GMT - . Launch Site: Cape Canaveral. Launch Complex: Cape Canaveral LC25C. LV Family: Trident. Launch Vehicle: Trident C-4. LV Configuration: Trident C-4 C4X-10.
  • Test mission - . Nation: USA. Agency: USN. Apogee: 1,000 km (600 mi).

1977 September 3 - . 14:16 GMT - . Launch Site: Cape Canaveral. Launch Complex: Cape Canaveral LC25C. LV Family: Trident. Launch Vehicle: Trident C-4. LV Configuration: Trident C-4 C4X-9.
  • Test mission - . Nation: USA. Agency: USN. Apogee: 1,000 km (600 mi).

1977 October 19 - . 18:08 GMT - . Launch Site: Cape Canaveral. Launch Complex: Cape Canaveral LC25C. LV Family: Trident. Launch Vehicle: Trident C-4. LV Configuration: Trident C-4 C4X-11.
  • Test mission - . Nation: USA. Agency: USN. Apogee: 1,000 km (600 mi).

1977 December 5 - . 14:08 GMT - . Launch Site: Cape Canaveral. Launch Complex: Cape Canaveral LC25C. LV Family: Trident. Launch Vehicle: Trident C-4. LV Configuration: Trident C-4 C4X-12.
  • Test mission - . Nation: USA. Agency: USN. Apogee: 1,000 km (600 mi).

1978 January 17 - . 20:21 GMT - . Launch Site: Cape Canaveral. Launch Complex: Cape Canaveral LC25C. LV Family: Trident. Launch Vehicle: Trident C-4. LV Configuration: Trident C-4 C4X-13.
  • Test mission - . Nation: USA. Agency: USN. Apogee: 1,000 km (600 mi).

1978 February 17 - . 21:30 GMT - . Launch Site: Cape Canaveral. Launch Complex: Cape Canaveral LC25C. LV Family: Trident. Launch Vehicle: Trident C-4. LV Configuration: Trident C-4 C4X-14.
  • Test mission - . Nation: USA. Agency: USN. Apogee: 1,000 km (600 mi).

1978 April 12 - . 15:31 GMT - . Launch Site: Cape Canaveral. Launch Complex: Cape Canaveral LC25C. LV Family: Trident. Launch Vehicle: Trident C-4. LV Configuration: Trident C-4 C4X-15. FAILURE: Failure.
  • Test mission - . Nation: USA. Agency: USN. Apogee: 100 km (60 mi).

1978 June 22 - . 11:49 GMT - . Launch Site: Cape Canaveral. Launch Complex: Cape Canaveral LC25C. LV Family: Trident. Launch Vehicle: Trident C-4. LV Configuration: Trident C-4 C4X-17. FAILURE: Failure.
  • Test mission - . Nation: USA. Agency: USN. Apogee: 1,000 km (600 mi).

1978 August 11 - . 02:20 GMT - . Launch Site: Cape Canaveral. Launch Complex: Cape Canaveral LC25C. LV Family: Trident. Launch Vehicle: Trident C-4. LV Configuration: Trident C-4 C4X-18.
  • Test mission - . Nation: USA. Agency: USN. Apogee: 1,000 km (600 mi).

1978 October 26 - . 14:53 GMT - . Launch Site: Cape Canaveral. Launch Complex: Cape Canaveral LC25C. LV Family: Trident. Launch Vehicle: Trident C-4. LV Configuration: Trident C-4 C4X-16.
  • Test mission - . Nation: USA. Agency: USN. Apogee: 1,000 km (600 mi).

1978 November 17 - . 20:17 GMT - . Launch Site: Cape Canaveral. Launch Complex: Cape Canaveral LC25C. LV Family: Trident. Launch Vehicle: Trident C-4. LV Configuration: Trident C-4 C4X-19.
  • Test mission - . Nation: USA. Agency: USN. Apogee: 1,000 km (600 mi).

1978 December 16 - . 17:43 GMT - . Launch Site: Cape Canaveral. Launch Complex: Cape Canaveral LC25C. LV Family: Trident. Launch Vehicle: Trident C-4. LV Configuration: Trident C-4 C4X-20. FAILURE: Failure.
  • Test mission - . Nation: USA. Agency: USN. Apogee: 1.00 km (0.60 mi).

1979 January 23 - . 15:00 GMT - . Launch Site: Cape Canaveral. Launch Complex: Cape Canaveral LC25C. LV Family: Trident. Launch Vehicle: Trident C-4. LV Configuration: Trident C-4 C4X-21.
  • Test mission - . Nation: USA. Agency: USN. Apogee: 1,000 km (600 mi).

1979 April 10 - . 10:00 GMT - . Launch Site: ETR Launch Area. Launch Platform: SSBN 657. LV Family: Trident. Launch Vehicle: Trident C-4. LV Configuration: Trident C-4 C4T-1. FAILURE: Failure.
  • PEM-1 operational test launch - . Nation: USA. Agency: USN. Apogee: 10 km (6 mi).

1979 June 8 - . 18:37 GMT - . Launch Site: ETR Launch Area. Launch Platform: SSBN 657. LV Family: Trident. Launch Vehicle: Trident C-4. LV Configuration: Trident C-4 C4T-3.
  • PEM-3 operational test launch - . Nation: USA. Agency: USN. Apogee: 1,000 km (600 mi).

1979 June 19 - . 18:00 GMT - . Launch Site: ETR Launch Area. Launch Platform: SSBN 657. LV Family: Trident. Launch Vehicle: Trident C-4. LV Configuration: Trident C-4 C4T-2.
  • PEM-2 operational test launch - . Nation: USA. Agency: USN. Apogee: 1,000 km (600 mi).

1979 July 14 - . 18:00 GMT - . Launch Site: ETR Launch Area. Launch Platform: SSBN 657. LV Family: Trident. Launch Vehicle: Trident C-4. LV Configuration: Trident C-4 C4T-5.
  • PEM-4 test launch - . Nation: USA. Agency: USN. Apogee: 1,000 km (600 mi).

1979 July 22 - . 18:00 GMT - . Launch Site: ETR Launch Area. Launch Platform: SSBN 657. LV Family: Trident. Launch Vehicle: Trident C-4. LV Configuration: Trident C-4 C4TE-4.
  • PEM-5 test launch - . Nation: USA. Agency: USN. Apogee: 1,000 km (600 mi).

1979 July 31 - . 02:15 GMT - . Launch Site: ETR Launch Area. Launch Platform: SSBN 657. LV Family: Trident. Launch Vehicle: Trident C-4. LV Configuration: Trident C-4 C4T-6.
  • PEM-6 test launch - . Nation: USA. Agency: USN. Apogee: 1,000 km (600 mi).

1979 July 31 - . 04:33 GMT - . Launch Site: ETR Launch Area. Launch Platform: SSBN 657. LV Family: Trident. Launch Vehicle: Trident C-4. LV Configuration: Trident C-4 C4T-7.
  • PEM-7 Demonstration and shakedown operations launch - . Nation: USA. Agency: USN. Apogee: 1,000 km (600 mi).

1979 August 29 - . 00:30 GMT - . Launch Site: ETR Launch Area. Launch Platform: SSBN 657. LV Family: Trident. Launch Vehicle: Trident C-4.
  • DASO-1? demonstration and shakedown operations launch - . Nation: USA. Agency: USN. Apogee: 1,000 km (600 mi).

1979 September 26 - . 23:44 GMT - . Launch Site: ETR Launch Area. Launch Platform: SSBN 657. LV Family: Trident. Launch Vehicle: Trident C-4.
  • DASO-2? demonstration and shakedown operations launch - . Nation: USA. Agency: USN. Apogee: 1,000 km (600 mi).

1979 December 13 - . 17:30 GMT - . Launch Site: ETR Launch Area. Launch Platform: SSBN 658. LV Family: Trident. Launch Vehicle: Trident C-4.
  • DASO-3? demonstration and shakedown operations launch - . Nation: USA. Agency: USN. Apogee: 1,000 km (600 mi).

1980 February 28 - . 13:13 GMT - . Launch Site: ETR Launch Area. Launch Platform: SSBN 657. LV Family: Trident. Launch Vehicle: Trident C-4.
  • OT-1 Operational missile test - . Nation: USA. Agency: USN. Apogee: 1,000 km (600 mi).

1980 February 28 - . 13:13 GMT - . Launch Site: ETR Launch Area. Launch Platform: SSBN 657. LV Family: Trident. Launch Vehicle: Trident C-4.
  • OT-1 Operational missile test - . Nation: USA. Agency: USN. Apogee: 1,000 km (600 mi).

1980 February 28 - . 14:15 GMT - . Launch Site: ETR Launch Area. Launch Platform: SSBN 657. LV Family: Trident. Launch Vehicle: Trident C-4.
  • OT-1 Operational missile test - . Nation: USA. Agency: USN. Apogee: 1,000 km (600 mi).

1980 February 28 - . 14:15 GMT - . Launch Site: ETR Launch Area. Launch Platform: SSBN 657. LV Family: Trident. Launch Vehicle: Trident C-4.
  • OT-1 Operational missile test - . Nation: USA. Agency: USN. Apogee: 1,000 km (600 mi).

1980 March 26 - . 12:19 GMT - . Launch Site: ETR Launch Area. Launch Platform: SSBN 655. LV Family: Trident. Launch Vehicle: Trident C-4.
  • DASO-4? demonstration and shakedown operations launch - . Nation: USA. Agency: USN. Apogee: 1,000 km (600 mi).

1980 April 1 - . 12:36 GMT - . Launch Site: ETR Launch Area. Launch Platform: SSBN 658. LV Family: Trident. Launch Vehicle: Trident C-4.
  • OT-2 Operational missile test - . Nation: USA. Agency: USN. Apogee: 1,000 km (600 mi).

1980 April 2 - . 12:39 GMT - . Launch Site: ETR Launch Area. Launch Platform: SSBN 658. LV Family: Trident. Launch Vehicle: Trident C-4.
  • OT-2 Operational missile test - . Nation: USA. Agency: USN. Apogee: 1,000 km (600 mi).

1980 April 2 - . 14:23 GMT - . Launch Site: ETR Launch Area. Launch Platform: SSBN 658. LV Family: Trident. Launch Vehicle: Trident C-4.
  • OT-2 Operational missile test - . Nation: USA. Agency: USN. Apogee: 1,000 km (600 mi).

1980 April 2 - . 14:23 GMT - . Launch Site: ETR Launch Area. Launch Platform: SSBN 658. LV Family: Trident. Launch Vehicle: Trident C-4.
  • OT-2 Operational missile test - . Nation: USA. Agency: USN. Apogee: 1,000 km (600 mi).

1980 May 28 - . 06:23 GMT - . Launch Site: ETR Launch Area. Launch Platform: SSBN 657. LV Family: Trident. Launch Vehicle: Trident C-4.
  • OT-3 Operational missile test - . Nation: USA. Agency: USN. Apogee: 1,000 km (600 mi).

1980 May 28 - . 06:24 GMT - . Launch Site: ETR Launch Area. Launch Platform: SSBN 657. LV Family: Trident. Launch Vehicle: Trident C-4.
  • OT-3 Operational missile test - . Nation: USA. Agency: USN. Apogee: 1,000 km (600 mi).

1980 May 28 - . 06:52 GMT - . Launch Site: ETR Launch Area. Launch Platform: SSBN 657. LV Family: Trident. Launch Vehicle: Trident C-4.
  • OT-3 Operational missile test - . Nation: USA. Agency: USN. Apogee: 1,000 km (600 mi).

1980 May 28 - . 06:52 GMT - . Launch Site: ETR Launch Area. Launch Platform: SSBN 657. LV Family: Trident. Launch Vehicle: Trident C-4.
  • OT-3 Operational missile test - . Nation: USA. Agency: USN. Apogee: 1,000 km (600 mi).

1980 June 27 - . 05:39 GMT - . Launch Site: ETR Launch Area. Launch Platform: SSBN 658. LV Family: Trident. Launch Vehicle: Trident C-4.
  • OT-4 Operational missile test - . Nation: USA. Agency: USN. Apogee: 1,000 km (600 mi).

1980 June 27 - . 05:39 GMT - . Launch Site: ETR Launch Area. Launch Platform: SSBN 658. LV Family: Trident. Launch Vehicle: Trident C-4.
  • OT-4 Operational missile test - . Nation: USA. Agency: USN. Apogee: 1,000 km (600 mi).

1980 June 27 - . 05:53 GMT - . Launch Site: ETR Launch Area. Launch Platform: SSBN 658. LV Family: Trident. Launch Vehicle: Trident C-4.
  • OT-4 Operational missile test - . Nation: USA. Agency: USN. Apogee: 1,000 km (600 mi).

1980 June 27 - . 05:53 GMT - . Launch Site: ETR Launch Area. Launch Platform: SSBN 658. LV Family: Trident. Launch Vehicle: Trident C-4.
  • OT-4 Operational missile test - . Nation: USA. Agency: USN. Apogee: 1,000 km (600 mi).

1980 July 22 - . 03:10 GMT - . Launch Site: ETR Launch Area. Launch Platform: SSBN 629. LV Family: Trident. Launch Vehicle: Trident C-4.
  • DASO-5? demonstration and shakedown operations launch - . Nation: USA. Agency: USN. Apogee: 1,000 km (600 mi).

1980 August 27 - . 02:19 GMT - . Launch Site: ETR Launch Area. Launch Platform: SSBN 655. LV Family: Trident. Launch Vehicle: Trident C-4.
  • OT-5 Operational missile test - . Nation: USA. Agency: USN. Apogee: 1,000 km (600 mi).

1980 August 27 - . 02:20 GMT - . Launch Site: ETR Launch Area. Launch Platform: SSBN 655. LV Family: Trident. Launch Vehicle: Trident C-4.
  • OT-5 Operational missile test - . Nation: USA. Agency: USN. Apogee: 1,000 km (600 mi).

1980 August 27 - . 02:20 GMT - . Launch Site: ETR Launch Area. Launch Platform: SSBN 655. LV Family: Trident. Launch Vehicle: Trident C-4.
  • OT-5 Operational missile test - . Nation: USA. Agency: USN. Apogee: 1,000 km (600 mi).

1980 October 28 - . 21:25 GMT - . Launch Site: ETR Launch Area. Launch Platform: SSBN 630. LV Family: Trident. Launch Vehicle: Trident C-4.
  • DASO-6? demonstration and shakedown operations launch - . Nation: USA. Agency: USN. Apogee: 1,000 km (600 mi).

1981 April 1 - . 09:10 GMT - . Launch Site: ETR Launch Area. Launch Platform: SSBN 641. LV Family: Trident. Launch Vehicle: Trident C-4.
  • DASO-7? demonstration and shakedown operations launch - . Nation: USA. Agency: USN. Apogee: 1,000 km (600 mi).

1981 August 13 - . 02:26 GMT - . Launch Site: ETR Launch Area. Launch Platform: SSBN 630. LV Family: Trident. Launch Vehicle: Trident C-4.
  • OT-6 Operational missile test - . Nation: USA. Agency: USN. Apogee: 1,000 km (600 mi).

1981 August 13 - . 02:46 GMT - . Launch Site: ETR Launch Area. Launch Platform: SSBN 630. LV Family: Trident. Launch Vehicle: Trident C-4.
  • OT-6 Operational missile test - . Nation: USA. Agency: USN. Apogee: 1,000 km (600 mi).

1981 August 13 - . 03:32 GMT - . Launch Site: ETR Launch Area. Launch Platform: SSBN 630. LV Family: Trident. Launch Vehicle: Trident C-4.
  • OT-6 Operational missile test - . Nation: USA. Agency: USN. Apogee: 1,000 km (600 mi).

1981 August 13 - . 03:32 GMT - . Launch Site: ETR Launch Area. Launch Platform: SSBN 630. LV Family: Trident. Launch Vehicle: Trident C-4.
  • OT-6 Operational missile test - . Nation: USA. Agency: USN. Apogee: 1,000 km (600 mi).

1981 August 28 - . 00:03 GMT - . Launch Site: ETR Launch Area. Launch Platform: SSBN 641. LV Family: Trident. Launch Vehicle: Trident C-4.
  • OT-7 Operational missile test - . Nation: USA. Agency: USN. Apogee: 1,000 km (600 mi).

1981 August 28 - . 00:04 GMT - . Launch Site: ETR Launch Area. Launch Platform: SSBN 641. LV Family: Trident. Launch Vehicle: Trident C-4.
  • OT-7 Operational missile test - . Nation: USA. Agency: USN. Apogee: 1,000 km (600 mi).

1981 August 28 - . 00:04 GMT - . Launch Site: ETR Launch Area. Launch Platform: SSBN 641. LV Family: Trident. Launch Vehicle: Trident C-4.
  • OT-7 Operational missile test - . Nation: USA. Agency: USN. Apogee: 1,000 km (600 mi).

1981 August 28 - . 00:04 GMT - . Launch Site: ETR Launch Area. Launch Platform: SSBN 641. LV Family: Trident. Launch Vehicle: Trident C-4.
  • OT-7 Operational missile test - . Nation: USA. Agency: USN. Apogee: 1,000 km (600 mi).

1981 November 15 - . 17:50 GMT - . Launch Site: ETR Launch Area. Launch Platform: SSBN 640. LV Family: Trident. Launch Vehicle: Trident C-4. FAILURE: Failure.
  • DASO-8 demonstration and shakedown operations launch - . Nation: USA. Agency: USN. Apogee: 20 km (12 mi).

1982 January 17 - . 14:11 GMT - . Launch Site: ETR Launch Area. Launch Platform: SSBN 726. LV Family: Trident. Launch Vehicle: Trident C-4.
  • DASO-9 demonstration and shakedown operations launch - . Nation: USA. Agency: USN. Apogee: 1,000 km (600 mi).

1982 January 26 - . 12:50 GMT - . Launch Site: ETR Launch Area. Launch Platform: SSBN 634. LV Family: Trident. Launch Vehicle: Trident C-4.
  • DASO-10 demonstration and shakedown operations launch - . Nation: USA. Agency: USN. Apogee: 1,000 km (600 mi).

1982 March 13 - . 17:00 GMT - . Launch Site: ETR Launch Area. Launch Platform: SSBN 726. LV Family: Trident. Launch Vehicle: Trident C-4.
  • DASO-11 demonstration and shakedown operations launch - . Nation: USA. Agency: USN. Apogee: 1,000 km (600 mi).

1982 March 17 - . Launch Site: ETR Launch Area. Launch Platform: SSBN 658. LV Family: Trident. Launch Vehicle: Trident C-4.
  • OT-8 Operational missile test - . Nation: USA. Agency: USN. Apogee: 1,000 km (600 mi).

1982 March 17 - . Launch Site: ETR Launch Area. Launch Platform: SSBN 658. LV Family: Trident. Launch Vehicle: Trident C-4.
  • OT-8 Operational missile test - . Nation: USA. Agency: USN. Apogee: 1,000 km (600 mi).

1982 March 17 - . Launch Site: ETR Launch Area. Launch Platform: SSBN 658. LV Family: Trident. Launch Vehicle: Trident C-4.
  • OT-8 Operational missile test - . Nation: USA. Agency: USN. Apogee: 1,000 km (600 mi).

1982 March 17 - . 10:34 GMT - . Launch Site: ETR Launch Area. Launch Platform: SSBN 658. LV Family: Trident. Launch Vehicle: Trident C-4.
  • OT-8 Operational missile test - . Nation: USA. Agency: USN. Apogee: 1,000 km (600 mi).

1982 April 24 - . 17:52 GMT - . Launch Site: ETR Launch Area. Launch Platform: SSBN 643. LV Family: Trident. Launch Vehicle: Trident C-4.
  • DASO-12 demonstration and shakedown operations launch - . Nation: USA. Agency: USN. Apogee: 1,000 km (600 mi).

1982 June 5 - . 20:00 GMT - . Launch Site: ETR Launch Area. Launch Platform: SSBN 627. LV Family: Trident. Launch Vehicle: Trident C-4.
  • DASO-13 demonstration and shakedown operations launch - . Nation: USA. Agency: USN. Apogee: 1,000 km (600 mi).

1982 November 14 - . 17:00 GMT - . Launch Site: ETR Launch Area. Launch Platform: SSBN 632. LV Family: Trident. Launch Vehicle: Trident C-4.
  • Demonstration and shakedown operations launch - . Nation: USA. Agency: USN. Apogee: 1,000 km (600 mi).

1982 November 21 - . 17:34 GMT - . Launch Site: ETR Launch Area. Launch Platform: SSBN 727. LV Family: Trident. Launch Vehicle: Trident C-4.
  • Demonstration and shakedown operations launch - . Nation: USA. Agency: USN. Apogee: 1,000 km (600 mi).

1983 February 7 - . Launch Site: ETR Launch Area. Launch Platform: SSBN 640. LV Family: Trident. Launch Vehicle: Trident C-4.
  • Follow-on operational missile test - . Nation: USA. Agency: USN. Apogee: 1,000 km (600 mi).

1983 February 7 - . 13:42 GMT - . Launch Site: ETR Launch Area. Launch Platform: SSBN 640. LV Family: Trident. Launch Vehicle: Trident C-4.
  • Follow-on operational missile test - . Nation: USA. Agency: USN. Apogee: 1,000 km (600 mi).

1983 April 19 - . 17:00 GMT - . Launch Site: ETR Launch Area. Launch Platform: SSBN 633. LV Family: Trident. Launch Vehicle: Trident C-4. FAILURE: Failure.
  • Demonstration and shakedown operations launch - . Nation: USA. Agency: USN. Apogee: 20 km (12 mi).

1983 August 6 - . Launch Site: ETR Launch Area. Launch Platform: SSBN 641. LV Family: Trident. Launch Vehicle: Trident C-4.
  • Follow-on operational missile test - . Nation: USA. Agency: USN. Apogee: 1,000 km (600 mi).

1983 August 6 - . 00:38 GMT - . Launch Site: ETR Launch Area. Launch Platform: SSBN 641. LV Family: Trident. Launch Vehicle: Trident C-4.
  • Follow-on operational missile test - . Nation: USA. Agency: USN. Apogee: 1,000 km (600 mi).

1983 August 21 - . 18:00 GMT - . Launch Site: ETR Launch Area. Launch Platform: SSBN 728. LV Family: Trident. Launch Vehicle: Trident C-4.
  • Demonstration and shakedown operations launch - . Nation: USA. Agency: USN. Apogee: 1,000 km (600 mi).

1983 October 3 - . 18:34 GMT - . Launch Site: ETR Launch Area. Launch Platform: SSBN 728. LV Family: Trident. Launch Vehicle: Trident C-4.
  • Demonstration and shakedown operations launch - . Nation: USA. Agency: USN. Apogee: 1,000 km (600 mi).

1983 November 7 - . Launch Site: ETR Launch Area. Launch Platform: SSBN 632. LV Family: Trident. Launch Vehicle: Trident C-4.
  • Follow-on operational missile test - . Nation: USA. Agency: USN. Apogee: 1,000 km (600 mi).

1983 November 7 - . 18:02 GMT - . Launch Site: ETR Launch Area. Launch Platform: SSBN 632. LV Family: Trident. Launch Vehicle: Trident C-4.
  • Follow-on operational missile test - . Nation: USA. Agency: USN. Apogee: 1,000 km (600 mi).

1983 December 6 - . Launch Site: WTR Launch Area. Launch Platform: SSBN. LV Family: Trident. Launch Vehicle: Trident C-4.
  • WTR to Wake - . Nation: USA. Agency: USN. Apogee: 1,000 km (600 mi).

1984 April 7 - . 07:20 GMT - . Launch Site: ETR Launch Area. Launch Platform: SSBN 729. LV Family: Trident. Launch Vehicle: Trident C-4.
  • Demonstration and shakedown operations launch - . Nation: USA. Agency: USN. Apogee: 1,000 km (600 mi).

1984 June 3 - . Launch Site: WTR Launch Area. Launch Platform: SSBN. LV Family: Trident. Launch Vehicle: Trident C-4.
  • WTR to Wake - . Nation: USA. Agency: USN. Apogee: 1,000 km (600 mi).

1984 July 2 - . Launch Site: WTR Launch Area. Launch Platform: SSBN. LV Family: Trident. Launch Vehicle: Trident C-4.
  • WTR to Wake? - . Nation: USA. Agency: USN. Apogee: 1,000 km (600 mi).

1984 August 24 - . Launch Site: ETR Launch Area. Launch Platform: SSBN 630. LV Family: Trident. Launch Vehicle: Trident C-4.
  • Follow-on operational missile test - . Nation: USA. Agency: USN. Apogee: 1,000 km (600 mi).

1984 August 24 - . 21:43 GMT - . Launch Site: ETR Launch Area. Launch Platform: SSBN 630. LV Family: Trident. Launch Vehicle: Trident C-4.
  • Follow-on operational missile test - . Nation: USA. Agency: USN. Apogee: 1,000 km (600 mi).

1984 October 9 - . 21:05 GMT - . Launch Site: ETR Launch Area. Launch Platform: SSBN 658. LV Family: Trident. Launch Vehicle: Trident C-4.
  • Demonstration and shakedown operations launch - . Nation: USA. Agency: USN. Apogee: 1,000 km (600 mi).

1984 December 4 - . 19:54 GMT - . Launch Site: ETR Launch Area. Launch Platform: SSBN 730. LV Family: Trident. Launch Vehicle: Trident C-4.
  • Demonstration and shakedown operations launch - . Nation: USA. Agency: USN. Apogee: 1,000 km (600 mi).

1984 December 15 - . 20:44 GMT - . Launch Site: ETR Launch Area. Launch Platform: SSBN 655. LV Family: Trident. Launch Vehicle: Trident C-4.
  • Demonstration and shakedown operations launch - . Nation: USA. Agency: USN. Apogee: 1,000 km (600 mi).

1985 June 18 - . Launch Site: ETR Launch Area. Launch Platform: SSBN 633. LV Family: Trident. Launch Vehicle: Trident C-4.
  • Follow-on operational missile test - . Nation: USA. Agency: USN. Apogee: 1,000 km (600 mi).

1985 June 18 - . Launch Site: ETR Launch Area. Launch Platform: SSBN 633. LV Family: Trident. Launch Vehicle: Trident C-4.
  • Follow-on operational missile test - . Nation: USA. Agency: USN. Apogee: 1,000 km (600 mi).

1985 June 18 - . Launch Site: ETR Launch Area. Launch Platform: SSBN 633. LV Family: Trident. Launch Vehicle: Trident C-4.
  • Follow-on operational missile test - . Nation: USA. Agency: USN. Apogee: 1,000 km (600 mi).

1985 June 18 - . 03:12 GMT - . Launch Site: ETR Launch Area. Launch Platform: SSBN 633. LV Family: Trident. Launch Vehicle: Trident C-4.
  • Follow-on operational missile test - . Nation: USA. Agency: USN. Apogee: 1,000 km (600 mi).

1985 July 6 - . 00:55 GMT - . Launch Site: ETR Launch Area. Launch Platform: SSBN 731. LV Family: Trident. Launch Vehicle: Trident C-4.
  • Demonstration and shakedown operations launch - . Nation: USA. Agency: USN. Apogee: 1,000 km (600 mi).

1985 December 7 - . 15:30 GMT - . Launch Site: ETR Launch Area. Launch Platform: SSBN 657. LV Family: Trident. Launch Vehicle: Trident C-4.
  • Demonstration and shakedown operations launch - . Nation: USA. Agency: USN. Apogee: 1,000 km (600 mi).

1986 February 21 - . 17:15 GMT - . Launch Site: ETR Launch Area. Launch Platform: SSBN 732. LV Family: Trident. Launch Vehicle: Trident C-4.
  • Demonstration and shakedown operations launch - . Nation: USA. Agency: USN. Apogee: 1,000 km (600 mi).

1986 July 28 - . Launch Site: ETR Launch Area. Launch Platform: SSBN 655. LV Family: Trident. Launch Vehicle: Trident C-4.
  • Follow-on operational missile test - . Nation: USA. Agency: USN. Apogee: 1,000 km (600 mi).

1986 July 28 - . 21:55 GMT - . Launch Site: ETR Launch Area. Launch Platform: SSBN 655. LV Family: Trident. Launch Vehicle: Trident C-4.
  • Follow-on operational missile test - . Nation: USA. Agency: USN. Apogee: 1,000 km (600 mi).

1986 August 31 - . Launch Site: ETR Launch Area. Launch Platform: SSBN 630. LV Family: Trident. Launch Vehicle: Trident C-4.
  • Demonstration and shakedown operations launch - . Nation: USA. Agency: USN. Apogee: 1,000 km (600 mi).

1986 September 17 - . Launch Site: ETR Launch Area. Launch Platform: SSBN 632. LV Family: Trident. Launch Vehicle: Trident C-4.
  • Follow-on operational missile test - . Nation: USA. Agency: USN. Apogee: 1,000 km (600 mi).

1986 September 17 - . 19:04 GMT - . Launch Site: ETR Launch Area. Launch Platform: SSBN 632. LV Family: Trident. Launch Vehicle: Trident C-4.
  • Follow-on operational missile test - . Nation: USA. Agency: USN. Apogee: 1,000 km (600 mi).

1986 September 30 - . 15:20 GMT - . Launch Site: ETR Launch Area. Launch Platform: SSBN 733. LV Family: Trident. Launch Vehicle: Trident C-4.
  • Demonstration and shakedown operations launch - . Nation: USA. Agency: USN. Apogee: 1,000 km (600 mi).

1987 August 24 - . 03:52 GMT - . Launch Site: ETR Launch Area. Launch Platform: SSBN 629. LV Family: Trident. Launch Vehicle: Trident C-4.
  • JANUS Demonstration and shakedown operations launch - . Nation: USA. Agency: SDIO. Apogee: 1,000 km (600 mi).

1987 August 29 - . Launch Site: ETR Launch Area. Launch Platform: SSBN 630. LV Family: Trident. Launch Vehicle: Trident C-4.
  • Follow-on operational missile test - . Nation: USA. Agency: USN. Apogee: 1,000 km (600 mi).

1987 August 29 - . Launch Site: ETR Launch Area. Launch Platform: SSBN 630. LV Family: Trident. Launch Vehicle: Trident C-4.
  • Follow-on operational missile test - . Nation: USA. Agency: USN. Apogee: 1,000 km (600 mi).

1987 August 29 - . Launch Site: ETR Launch Area. Launch Platform: SSBN 630. LV Family: Trident. Launch Vehicle: Trident C-4.
  • Follow-on operational missile test - . Nation: USA. Agency: USN. Apogee: 1,000 km (600 mi).

1987 August 29 - . 23:43 GMT - . Launch Site: ETR Launch Area. Launch Platform: SSBN 630. LV Family: Trident. Launch Vehicle: Trident C-4.
  • Follow-on operational missile test - . Nation: USA. Agency: USN. Apogee: 1,000 km (600 mi).

1988 February 6 - . 19:55 GMT - . Launch Site: ETR Launch Area. Launch Platform: SSBN 641. LV Family: Trident. Launch Vehicle: Trident C-4. FAILURE: Failure.
  • Demonstration and shakedown operations launch - . Nation: USA. Agency: USN. Apogee: 2.00 km (1.20 mi).

1988 February 27 - . 15:27 GMT - . Launch Site: ETR Launch Area. Launch Platform: SSBN 634. LV Family: Trident. Launch Vehicle: Trident C-4.
  • Demonstration and shakedown operations launch - . Nation: USA. Agency: USN. Apogee: 1,000 km (600 mi).

1988 April 15 - . Launch Site: ETR Launch Area. Launch Platform: SSBN 658. LV Family: Trident. Launch Vehicle: Trident C-4.
  • Follow-on operational missile test - . Nation: USA. Agency: USN. Apogee: 1,000 km (600 mi).

1988 April 15 - . Launch Site: ETR Launch Area. Launch Platform: SSBN 658. LV Family: Trident. Launch Vehicle: Trident C-4.
  • Follow-on operational missile test - . Nation: USA. Agency: USN. Apogee: 1,000 km (600 mi).

1988 April 15 - . Launch Site: ETR Launch Area. Launch Platform: SSBN 658. LV Family: Trident. Launch Vehicle: Trident C-4.
  • Follow-on operational missile test - . Nation: USA. Agency: USN. Apogee: 1,000 km (600 mi).

1988 April 15 - . 04:11 GMT - . Launch Site: ETR Launch Area. Launch Platform: SSBN 658. LV Family: Trident. Launch Vehicle: Trident C-4.
  • Follow-on operational missile test - . Nation: USA. Agency: USN. Apogee: 1,000 km (600 mi).

1988 May 14 - . Launch Site: WTR Launch Area. Launch Platform: SSBN ?. LV Family: Trident. Launch Vehicle: Trident C-4.
  • Operational test - . Nation: USA. Agency: USN. Apogee: 1,000 km (600 mi).

1989 January 23 - . 10:40 GMT - . Launch Site: ETR Launch Area. Launch Platform: SSBN 640. LV Family: Trident. Launch Vehicle: Trident C-4.
  • DASO-31 demonstration and shakedown operations launch - . Nation: USA. Agency: USN. Apogee: 1,000 km (600 mi).

1989 February 4 - . 03:03 GMT - . Launch Site: ETR Launch Area. Launch Platform: SSBN 643. LV Family: Trident. Launch Vehicle: Trident C-4.
  • DASO-32 technology mission / demonstration and shakedown operations launch - . Nation: USA. Agency: SDIO. Apogee: 1,000 km (600 mi).

1990 March 24 - . Launch Site: ETR Launch Area. Launch Platform: SSBN 629. LV Family: Trident. Launch Vehicle: Trident C-4.
  • CINC Evaluation Test launch - . Nation: USA. Agency: USN. Apogee: 1,000 km (600 mi).

1990 March 24 - . Launch Site: ETR Launch Area. Launch Platform: SSBN 629. LV Family: Trident. Launch Vehicle: Trident C-4.
  • CINC Evaluation Test launch - . Nation: USA. Agency: USN. Apogee: 1,000 km (600 mi).

1990 March 24 - . Launch Site: ETR Launch Area. Launch Platform: SSBN 629. LV Family: Trident. Launch Vehicle: Trident C-4.
  • CINC Evaluation Test launch - . Nation: USA. Agency: USN. Apogee: 1,000 km (600 mi).

1990 March 24 - . Launch Site: ETR Launch Area. Launch Platform: SSBN 629. LV Family: Trident. Launch Vehicle: Trident C-4.
  • CINC Evaluation Test launch - . Nation: USA. Agency: USN. Apogee: 1,000 km (600 mi).

1991 March 19 - . Launch Site: WTR Launch Area. Launch Platform: SSBN ?. LV Family: Trident. Launch Vehicle: Trident C-4.
  • Operational test - . Nation: USA. Agency: USN. Apogee: 1,000 km (600 mi).

1991 March 19 - . Launch Site: WTR Launch Area. Launch Platform: SSBN ?. LV Family: Trident. Launch Vehicle: Trident C-4.
  • Operational test - . Nation: USA. Agency: USN. Apogee: 1,000 km (600 mi).

1991 May 10 - . Launch Site: ETR Launch Area. Launch Platform: SSBN 658. LV Family: Trident. Launch Vehicle: Trident C-4. LV Configuration: Trident C-4 FCET-39.
  • Follow-On CINC Evaluation Test - . Nation: USA. Agency: USN. Apogee: 1,000 km (600 mi).

1991 May 10 - . Launch Site: ETR Launch Area. Launch Platform: SSBN 658. LV Family: Trident. Launch Vehicle: Trident C-4. LV Configuration: Trident C-4 FCET-39.
  • Follow-On CINC Evaluation Test - . Nation: USA. Agency: USN. Apogee: 1,000 km (600 mi).

1991 May 10 - . Launch Site: Cape Canaveral ETR. Launch Vehicle: Trident C-4.
  • FCET - . Nation: USA. Agency: USN. Apogee: 1,000 km (600 mi).

1991 May 10 - . Launch Site: Cape Canaveral ETR. Launch Vehicle: Trident C-4.
  • FCET - . Nation: USA. Agency: USN. Apogee: 1,000 km (600 mi).

1991 June 19 - . 18:00 GMT - . Launch Site: Cape Canaveral ETR. Launch Vehicle: Trident C-4.
  • - . Nation: USA. Agency: USN. Apogee: 1,000 km (600 mi).

1992 April 8 - . Launch Site: ETR Launch Area. Launch Platform: SSBN 655. LV Family: Trident. Launch Vehicle: Trident C-4.
  • FCET-40 Follow-On CINC Evaluation Test - . Nation: USA. Agency: USN. Apogee: 1,000 km (600 mi).

1992 April 8 - . Launch Site: ETR Launch Area. Launch Platform: SSBN 655. LV Family: Trident. Launch Vehicle: Trident C-4.
  • FCET-40 Follow-On CINC Evaluation Test - . Nation: USA. Agency: USN. Apogee: 1,000 km (600 mi).

1994 March 28 - . Launch Site: ETR Launch Area. Launch Platform: SSBN 729. LV Family: Trident. Launch Vehicle: Trident C-4. LV Configuration: Trident C-4 FCET-44.
  • Operational test - . Nation: USA. Agency: USN. Apogee: 1,000 km (600 mi).

1994 March 28 - . Launch Site: ETR Launch Area. Launch Platform: SSBN 729. LV Family: Trident. Launch Vehicle: Trident C-4. LV Configuration: Trident C-4 FCET-44.
  • Operational test - . Nation: USA. Agency: USN. Apogee: 1,000 km (600 mi).

1994 March 28 - . Launch Site: ETR Launch Area. Launch Platform: SSBN 729. LV Family: Trident. Launch Vehicle: Trident C-4. LV Configuration: Trident C-4 FCET-44.
  • Operational test - . Nation: USA. Agency: USN. Apogee: 1,000 km (600 mi).

1994 March 28 - . Launch Site: ETR Launch Area. Launch Platform: SSBN 729. LV Family: Trident. Launch Vehicle: Trident C-4. LV Configuration: Trident C-4 FCET-44.
  • Operational test - . Nation: USA. Agency: USN. Apogee: 1,000 km (600 mi).

1994 October 23 - . Launch Site: ETR Launch Area. Launch Platform: SSBN 726. LV Family: Trident. Launch Vehicle: Trident C-4. LV Configuration: Trident C-4 DASO-33.
  • Operational test - . Nation: USA. Agency: USN. Apogee: 1,000 km (600 mi).

1994 December 7 - . Launch Site: ETR Launch Area. Launch Platform: SSBN 730. LV Family: Trident. Launch Vehicle: Trident C-4. LV Configuration: Trident C-4 FCET-45.
  • Operational test - . Nation: USA. Agency: USN. Apogee: 1,000 km (600 mi).

1994 December 7 - . Launch Site: ETR Launch Area. Launch Platform: SSBN 730. LV Family: Trident. Launch Vehicle: Trident C-4. LV Configuration: Trident C-4 FCET-45.
  • Operational test - . Nation: USA. Agency: USN. Apogee: 1,000 km (600 mi).

1994 December 7 - . 16:11 GMT - . Launch Site: Cape Canaveral ETR. Launch Vehicle: Trident C-4. LV Configuration: Trident C-4 FCET-45.
  • - . Nation: USA. Agency: USN. Apogee: 1,000 km (600 mi).

1994 December 7 - . 16:11 GMT - . Launch Site: Cape Canaveral ETR. Launch Vehicle: Trident C-4. LV Configuration: Trident C-4 FCET-45.
  • - . Nation: USA. Agency: USN. Apogee: 1,000 km (600 mi).

1995 March 6 - . Launch Site: ETR Launch Area. Launch Platform: SSBN 728. LV Family: Trident. Launch Vehicle: Trident C-4. LV Configuration: Trident C-4 FCET-46.
  • Operational test - . Nation: USA. Agency: USN. Apogee: 1,000 km (600 mi).

1995 March 6 - . Launch Site: ETR Launch Area. Launch Platform: SSBN 728. LV Family: Trident. Launch Vehicle: Trident C-4. LV Configuration: Trident C-4 FCET-46.
  • Operational test - . Nation: USA. Agency: USN. Apogee: 1,000 km (600 mi).

1995 March 6 - . Launch Site: ETR Launch Area. Launch Platform: SSBN 728. LV Family: Trident. Launch Vehicle: Trident C-4. LV Configuration: Trident C-4 FCET-46.
  • Operational test - . Nation: USA. Agency: USN. Apogee: 1,000 km (600 mi).

1995 March 6 - . 21:03 GMT - . Launch Site: Cape Canaveral ETR. Launch Vehicle: Trident C-4. LV Configuration: Trident C-4 FCET-46.
  • - . Nation: USA. Agency: USN. Apogee: 1,000 km (600 mi).

1995 March 14 - . Launch Site: ETR Launch Area. Launch Platform: SSBN 728. LV Family: Trident. Launch Vehicle: Trident C-4. LV Configuration: Trident C-4 FCET-46A.
  • Operational test - . Nation: USA. Agency: USN. Apogee: 1,000 km (600 mi).

1995 March 14 - . Launch Site: ETR Launch Area. Launch Platform: SSBN 728. LV Family: Trident. Launch Vehicle: Trident C-4. LV Configuration: Trident C-4 FCET-46A.
  • Operational test - . Nation: USA. Agency: USN. Apogee: 1,000 km (600 mi).

1995 October 29 - . Launch Site: ETR Launch Area. Launch Platform: SSBN 727. LV Family: Trident. Launch Vehicle: Trident C-4. LV Configuration: Trident C-4 DASO-34.
  • Operational test - . Nation: USA. Agency: USN. Apogee: 1,000 km (600 mi).

1996 May 16 - . Launch Site: ETR Launch Area. Launch Platform: SSBN 726. LV Family: Trident. Launch Vehicle: Trident C-4. LV Configuration: Trident C-4 FCET-47.
  • Operational test - . Nation: USA. Agency: USN. Apogee: 1,000 km (600 mi).

1996 May 16 - . Launch Site: ETR Launch Area. Launch Platform: SSBN 726. LV Family: Trident. Launch Vehicle: Trident C-4. LV Configuration: Trident C-4 FCET-47.
  • Operational test - . Nation: USA. Agency: USN. Apogee: 1,000 km (600 mi).

1996 May 16 - . Launch Site: ETR Launch Area. Launch Platform: SSBN 726. LV Family: Trident. Launch Vehicle: Trident C-4. LV Configuration: Trident C-4 FCET-47.
  • Operational test - . Nation: USA. Agency: USN. Apogee: 1,000 km (600 mi).

1996 May 16 - . Launch Site: ETR Launch Area. Launch Platform: SSBN 726. LV Family: Trident. Launch Vehicle: Trident C-4. LV Configuration: Trident C-4 FCET-47.
  • Operational test - . Nation: USA. Agency: USN. Apogee: 1,000 km (600 mi).

1996 October 2 - . Launch Site: ETR Launch Area. Launch Platform: SSBN 728. LV Family: Trident. Launch Vehicle: Trident C-4. LV Configuration: Trident C-4 DASO-35.
  • Operational test - . Nation: USA. Agency: USN. Apogee: 1,000 km (600 mi).

1997 February 20 - . Launch Site: ETR Launch Area. Launch Platform: SSBN 732. LV Family: Trident. Launch Vehicle: Trident C-4. LV Configuration: Trident C-4 FCET-48.
  • Operational test - . Nation: USA. Agency: USN. Apogee: 1,000 km (600 mi).

1997 February 20 - . Launch Site: ETR Launch Area. Launch Platform: SSBN 732. LV Family: Trident. Launch Vehicle: Trident C-4. LV Configuration: Trident C-4 FCET-48.
  • Operational test - . Nation: USA. Agency: USN. Apogee: 1,000 km (600 mi).

1997 February 20 - . Launch Site: ETR Launch Area. Launch Platform: SSBN 732. LV Family: Trident. Launch Vehicle: Trident C-4. LV Configuration: Trident C-4 FCET-48.
  • Operational test - . Nation: USA. Agency: USN. Apogee: 1,000 km (600 mi).

1997 February 20 - . Launch Site: ETR Launch Area. Launch Platform: SSBN 732. LV Family: Trident. Launch Vehicle: Trident C-4. LV Configuration: Trident C-4 FCET-48.
  • Operational test - . Nation: USA. Agency: USN. Apogee: 1,000 km (600 mi).

1998 February 10 - . Launch Site: ETR Launch Area. Launch Platform: SSBN 733. LV Family: Trident. Launch Vehicle: Trident C-4. LV Configuration: Trident C-4 FCET-49.
  • Operational test - . Nation: USA. Agency: USN. Apogee: 1,000 km (600 mi).

1998 February 10 - . Launch Site: ETR Launch Area. Launch Platform: SSBN 733. LV Family: Trident. Launch Vehicle: Trident C-4. LV Configuration: Trident C-4 FCET-49.
  • Operational test - . Nation: USA. Agency: USN. Apogee: 1,000 km (600 mi).

1998 February 10 - . Launch Site: ETR Launch Area. Launch Platform: SSBN 733. LV Family: Trident. Launch Vehicle: Trident C-4. LV Configuration: Trident C-4 FCET-49.
  • Operational test - . Nation: USA. Agency: USN. Apogee: 1,000 km (600 mi).

1998 February 10 - . Launch Site: ETR Launch Area. Launch Platform: SSBN 733. LV Family: Trident. Launch Vehicle: Trident C-4. LV Configuration: Trident C-4 FCET-49.
  • Operational test - . Nation: USA. Agency: USN. Apogee: 1,000 km (600 mi).

1999 March 23 - . Launch Site: ETR Launch Area. Launch Platform: SSBN 730. LV Family: Trident. Launch Vehicle: Trident C-4. LV Configuration: Trident C-4 FCET-50.
  • Operational test - . Nation: USA. Agency: USN. Apogee: 1,000 km (600 mi).

1999 March 23 - . Launch Site: ETR Launch Area. Launch Platform: SSBN 730. LV Family: Trident. Launch Vehicle: Trident C-4. LV Configuration: Trident C-4 FCET-50.
  • Operational test - . Nation: USA. Agency: USN. Apogee: 1,000 km (600 mi).

1999 March 25 - . Launch Site: ETR Launch Area. Launch Platform: SSBN 730. LV Family: Trident. Launch Vehicle: Trident C-4. LV Configuration: Trident C-4 FCET-50.
  • Operational test - . Nation: USA. Agency: USN. Apogee: 1,000 km (600 mi).

1999 March 25 - . Launch Site: ETR Launch Area. Launch Platform: SSBN 730. LV Family: Trident. Launch Vehicle: Trident C-4. LV Configuration: Trident C-4 FCET-50.
  • Operational test - . Nation: USA. Agency: USN. Apogee: 1,000 km (600 mi).

2000 February 26 - . Launch Site: ETR Launch Area. Launch Platform: SSBN 730. LV Family: Trident. Launch Vehicle: Trident C-4. LV Configuration: Trident C-4 FCET-51.
  • Operational test - . Nation: USA. Agency: USN. Apogee: 1,000 km (600 mi).

2000 February 26 - . Launch Site: ETR Launch Area. Launch Platform: SSBN 730. LV Family: Trident. Launch Vehicle: Trident C-4. LV Configuration: Trident C-4 FCET-51.
  • Operational test - . Nation: USA. Agency: USN. Apogee: 1,000 km (600 mi).

2000 February 26 - . Launch Site: ETR Launch Area. Launch Platform: SSBN 730. LV Family: Trident. Launch Vehicle: Trident C-4. LV Configuration: Trident C-4 FCET-51.
  • Operational test - . Nation: USA. Agency: USN. Apogee: 1,000 km (600 mi).

2000 February 26 - . Launch Site: ETR Launch Area. Launch Platform: SSBN 730. LV Family: Trident. Launch Vehicle: Trident C-4. LV Configuration: Trident C-4 FCET-51.
  • Operational test - . Nation: USA. Agency: USN. Apogee: 1,000 km (600 mi).

2001 December 9 - . Launch Site: ETR Launch Area. Launch Platform: SSBN 726. LV Family: Trident. Launch Vehicle: Trident C-4. LV Configuration: Trident C-4 FCET-52.
  • OT-III Operational test - . Nation: USA. Agency: USN. Apogee: 1,000 km (600 mi).

2001 December 9 - . Launch Site: ETR Launch Area. Launch Platform: SSBN 726. LV Family: Trident. Launch Vehicle: Trident C-4. LV Configuration: Trident C-4 FCET-52.
  • OT-III Operational test - . Nation: USA. Agency: USN. Apogee: 1,000 km (600 mi).

2001 December 9 - . Launch Site: ETR Launch Area. Launch Platform: SSBN 726. LV Family: Trident. Launch Vehicle: Trident C-4. LV Configuration: Trident C-4 FCET-52.
  • OT-III (218) operational test launch - . Nation: USA. Agency: USN. Apogee: 1,000 km (600 mi).

2001 December 9 - . Launch Site: ETR Launch Area. Launch Platform: SSBN 726. LV Family: Trident. Launch Vehicle: Trident C-4. LV Configuration: Trident C-4 FCET-52.
  • OT-III (221) operational test launch - . Nation: USA. Agency: USN. Apogee: 1,000 km (600 mi).

2001 December 18 - . Launch Site: ETR Launch Area. Launch Platform: SSBN 726. LV Family: Trident. Launch Vehicle: Trident C-4. LV Configuration: Trident C-4 FCET-53.
  • OT-III (224) operational test launch - . Nation: USA. Agency: USN. Apogee: 1,000 km (600 mi).

2001 December 18 - . Launch Site: ETR Launch Area. Launch Platform: SSBN 726. LV Family: Trident. Launch Vehicle: Trident C-4. LV Configuration: Trident C-4 FCET-53.
  • OT-III (225) operational test launch - . Nation: USA. Agency: USN. Apogee: 1,000 km (600 mi).

2001 December 18 - . Launch Site: ETR Launch Area. Launch Platform: SSBN 726. LV Family: Trident. Launch Vehicle: Trident C-4. LV Configuration: Trident C-4 FCET-53.
  • OT-III Operational test - . Nation: USA. Agency: USN. Apogee: 1,000 km (600 mi).

2001 December 18 - . Launch Site: ETR Launch Area. Launch Platform: SSBN 726. LV Family: Trident. Launch Vehicle: Trident C-4. LV Configuration: Trident C-4 FCET-53.
  • OT-III (223) operational test launch - . Nation: USA. Agency: USN. Apogee: 1,000 km (600 mi).

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