| Career (US) | |
|---|---|
| Ordered: | June 1, 1951 |
| Laid down: | September 15, 1952 |
| Launched: | August 15, 1953 |
| Commissioned: | December 15, 1958 |
| Decommissioned: | January 1, 1972 |
| In service: | July 1, 1977 |
| Homeport: | None |
| Fate: | In service with the Military Sealift Command |
| General characteristics | |
| Displacement: | approx. 17,015 tons (17,288 t) |
| Length: | 564 ft (172 m) |
| Beam: | 76 ft (23 m) |
| Draught: | 28.58333 ft (8.71220 m) |
| Propulsion: | Two boilers; 1 GE turbine; 19,250 hp (14.36 MW); 1 shaft |
| Speed: | 20 knots (37 km/h) |
| Capacity: | Officers: 92 Enlisted: 465 |
| Complement: | 65 civilians 20 Navy personnel 35 technicians |
| Sensors and processing systems: |
AN/SPQ-11 Cobra Judy |
USNS Observation Island (T-AGM-23), also known as ex-MA-28, ex-YAG-57, ex-E-AG-154, Empire State Mariner, is the historic naval vessel that in 1969 launched the first Poseidon Fleet Ballstic Missile ever successfully deployed from a vessel at sea, earning the ship and crew the Meritorious Unit Commendation.[1][2] The ship is currently one of two Missile Range Instrumentation Ships operated by the Military Sealift Command.[3] One of the radars it carries is the AN/SPQ-11 Cobra Judy Passive Electronically Scanned Array radar.
USNS Observation Island operates worldwide, monitoring compliance with strategic arms treaties and supporting U.S. military weapons test programs. Observation Island carries an Air Force shipborne phased-array radar system for collecting data on missile tests. The ship is operated by Military Sealift Command for the Air Force Technical Applications Center at Patrick Air Force Base.[4]
USNS Observation Island was built as a "Mariner" class merchant ship, launched in August, 1953, and was acquired by the Navy in September 1956 for use as a fleet ballistic missile test ship. The vessel was converted at Norfolk Naval Shipyard, and kept in reserve as a Maritime Administration asset from 1972 until 1977. In August 1977, Observation Island was reacquired by the U.S. Navy and transferred to Military Sealift Command, where it was reclassified as T-AGM 23, a missile range instrumentation ship.[4]
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USNS Observation Island was converted to the first naval ship that had a fully integrated Fleet Ballistic Missile System. No major hull or engineering changes were made to the ship during this conversion. Because of the refit, the ship underwent a shakedown cruise at Guantanamo Bay.[5]
The first at-sea launch of the A-1 Polaris missile was from the USS George Washington (SSBN-598) on July 18, 1960, and was monitored by the Observation Island. The ship was also present for initial tests of the A-2 and A-3 variants of Polaris. It was aboard Observation Island that President John F. Kennedy, on November 16, 1963, witnessed an A-3 Polaris launch, six days before his assassination.[5][6] While aboard Observation Island, President Kennedy gave his final speech from a U.S. Navy vessel:
| “ | I want to express for all of us our very warm appreciation to you for providing this demonstration of Naval Power today and also to express my thanks to your very dedicated service over a good many months and years. Control of the seas, the maintenance of the flag of the United States in its traditional position on the ocean is vital to the security of the United States. To do that, of course, we have to maintain the most advanced weapons system in the world. This ship contributed direct to that maintenance and I want to express our appreciation to all of you. | ” |
In 1983, the first ever (USA) navel installation of a phased-array radar system was completed and tested on the USNS Observation Island. Weeks of sea trials were spent testing and perfecting the software required for a nonstable platform.
While the Observation Island was stationed at Port Canaveral, adjacent to NASA at Cape Kennedy, Florida, in the very week Apollo 11 was launched from the Cape, the ship also made history by beginning its mission to achieve "the first successful at-sea firing of the POSEIDON Fleet Ballistic Missile." (Admiral E.R. Zumwalt Jr., 1971)[7][8]. The commendation was earned by the 1969 crew and was awarded in 1971 while the ship was stationed at Pearl Harbor, Hawaii for various range survey duties. In later 71 (or 72?) she was decommissioned for awhile, though later she reappeared for other missions as a USNS ship (see above). The success of the mission earned the ship and crew the Meritorious Unit Commendation from the Secretary of the Navy. As taken directly from the Commendation letter sent to crewman SD2 Rolando S. Caparas, (along with cover letter from Commanding Officer, Captain W.C. Dotson), Admiral Zumwalt wrote of the Commendation:
| “ | The Secretary of the Navy takes pleasure in representing the MERITORIOUS UNIT COMMENDATION to USS OBSERVATION ISLAND (AG-154) for service as set forth in the following Citation: For meritorious service from 1 July to 16 December 1969 during at-sea operations in connection with the first successful at-sea firing of the POSEIDON Fleet Ballistic Missile. Throughout this period, the officers and men of USS OBSERVATION ISLAND carried out the required afloat tests and conducted complex and demanding operations in the essential support functions of POSEIDON flight testing, with exceptional competence and resourcefulness. The timely and highly successful conclusion of the at-sea test phase was a significant achievement expediting the availability to the United Sates of the most advanced and potent deterrent system. The teamwork and dedication to duty displayed by the officers and men of USS OBSERVATION ISLAND reflected credit upon themselves and were in keeping with the highest traditions of the United States Naval Service." | ” |
The Meritorious Unit Commendation is considered to be equivalent in importance to the Bronze Star. Photocopies of both letters are inserted below.
In 2008, the USNS Observation Island was part of the U.S. Government program attempting to use an anti-missile missile to shoot down satellites by tracking the satellite before and after the missile launch.[9]
USNS Howard O. Lorenzen (T-AGM-25)[10] is due to be delivered in 2010 and is slated to replace USNS Observation Island.[11]
This article incorporates text from the public domain Dictionary of American Naval Fighting Ships.