USNS Silas Bent
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USNS ''Silas Bent'' (T-AGS-26) was a ''Silas Bent'' class survey ship acquired by the United States Navy in 1964 and delivered to the
Military Sealift Command Military Sealift Command (MSC) is an organization that controls the replenishment and military transport ships of the United States Navy. Military Sealift Command has the responsibility for providing sealift and ocean transportation for all US m ...
in 1965. ''Silas Bent'' spent her career in the Pacific Ocean performing oceanographic surveys. The ship was equipped with the Oceanographic Data Acquisition System (ODAS) as were the later oceanographic survey ships and .


Construction

''Silas Bent'' (AGS-26), an oceanographic survey ship, was laid down in March 1964 by the American Shipbuilding Co. at
Lorain, Ohio Lorain () is a city in Lorain County, Ohio, United States. The municipality is located in northeastern Ohio on Lake Erie, at the mouth of the Black River, about 30 miles west of Cleveland. As of the 2020 census, the city had a population of 65 ...
and launched on 16 May 1964 sponsored by sisters and granddaughters of Silas Bent, Miss Nancy M. McKinley and Mrs. Jeffrey R. Grandy. The ship was delivered to the Military Sea Transportation Service (now the Military Sealift Command) in July 1965.


Oceanographic survey operations

''Silas Bent''—the first of a new class of oceanographic survey ships—was manned by a
Civil Service The civil service is a collective term for a sector of government composed mainly of career civil servants hired on professional merit rather than appointed or elected, whose institutional tenure typically survives transitions of political leaders ...
crew and operated by the Military Sealift Command as an integrated system for the gathering of vital oceanographic data in both underway and on-station modes. The data she collected was recorded in a form immediately usable by computers. She was under the technical control of the Naval Oceanographic Office then located in
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. The oceanographic survey ship completed her
shakedown cruise Shakedown cruise is a nautical term in which the performance of a ship is tested. Generally, shakedown cruises are performed before a ship enters service or after major changes such as a crew change, repair or overhaul. The shakedown cruise s ...
during the winter of 1965 and 1966. The ship was assigned operations including the Navy's ASW/USW Oceanwide Survey Project supporting antisubmarine and undersea warfare weapons systems, primarily in the northern Pacific.


Survey examples

The ship completed the first full year of ASW/USW Oceanwide Survey Project, an effort to perform comprehensive surveys of strategic ocean areas, during fiscal year 1967. The first of the year was spent in the Atlantic with work in the Labrador Sea followed by a search for the reported
American Scout Seamount American Scout Seamount appeared on charts of the North Atlantic Ocean published during the 1950s. It was located near with a depth of 37 meters. Investigations by the Woods Hole Oceanographic Institution research vessel ''Atlantis II'' in 1964 ...
. The June 1966 survey found no evidence of a seamount with no soundings less than but did find strong returns from the Deep Scattering Layer that could be mistaken for shoals. Following additional surveys in the Gulf of Maine and north of Bermuda the ship was transferred to the Pacific in December 1966. The remainder of the fiscal year was spent surveying north of Hawaii into the Gulf of Alaska. On 8 August 1968 ''Silas Bent'' departed
Hakodate, Japan is a city and port located in Oshima Subprefecture, Hokkaido, Japan. It is the capital city of Oshima Subprefecture. As of July 31, 2011, the city has an estimated population of 279,851 with 143,221 households, and a population density of 412.8 ...
for surveys east of Kamchatka but was diverted on 12 August to an area south of
Amchitka Island Amchitka (; ale, Amchixtax̂; russian: Амчитка) is a volcanic, tectonically unstable and uninhabited island in the Rat Islands group of the Aleutian Islands in southwest Alaska. It is part of the Alaska Maritime National Wildlife Refu ...
, Alaska to assist in the search, termed CHASE VI SALVOPS, for the Liberty ship ''Robert L. Stevenson'' which was to be scuttled with a load of ammunition but failed to immediately sink and sunk in an unknown position. After six days on station the survey ship located the lost ship using a deep towed
magnetometer A magnetometer is a device that measures magnetic field or magnetic dipole moment. Different types of magnetometers measure the direction, strength, or relative change of a magnetic field at a particular location. A compass is one such device, o ...
and narrow beam
echosounder Echo sounding or depth sounding is the use of sonar for ranging, normally to determine the depth of water (bathymetry). It involves transmitting acoustic waves into water and recording the time interval between emission and return of a pulse; ...
with confirmation by photographs using a deep sea camera. After the search the ship returned to Japan for regular survey operations with a limited survey in the
Sea of Okhotsk The Sea of Okhotsk ( rus, Охо́тское мо́ре, Ohótskoye móre ; ja, オホーツク海, Ohōtsuku-kai) is a marginal sea of the western Pacific Ocean. It is located between Russia's Kamchatka Peninsula on the east, the Kuril Islands ...
before transit to San Francisco arriving 30 October. On departure from San Francisco to Sasebo, Japan between 15 and 28 March 1968 the ship conducted underway transit data and planted current meter and thermister array buoys in the Sea of Japan. From 11 April to 14 May the ship conducted joint acoustic operations with the RV ''F. V. Hunt'' which was also assigned work for the ASW/USW Surveys Project. The two ships continued operations in the Sea of Japan and Sea of Okhotsk into June 1968. In 1972, she visited Japan, for the 2nd annual Ocean Development Conference held at Tokyo. During the conference, there were numerous tours and briefings held on ''Silas Bent'' describing, for the ocean scientists of the world, her capabilities for measuring bathymetric depth, magnetic intensity, gravity, surface temperature, seismic reflection, sound velocity, ambient light, and salinity. As of mid-September 1974, ''Silas Bent'' engaged in special operations in the area of Kodiak, Alaska. The ship conducted surveys for about a month in the Sea of Okhotsk beginning on 25 September 1986. USNS ''Silas Bent'' was transferred under the Security Assistance Program to the
Republic of Turkey Turkey ( tr, Türkiye ), officially the Republic of Türkiye ( tr, Türkiye Cumhuriyeti, links=no ), is a list of transcontinental countries, transcontinental country located mainly on the Anatolia, Anatolian Peninsula in Western Asia, with ...
29 September 1999 and stricken from the Naval Vessel Register on 28 October 1999.


Turkish service

As TCG ''Çeșme'' (A-599) the ship continued work as a hydrographic and oceanographic survey ship and was joined by sister ship USNS ''Elisha Kent Kane'' (T-AGS-27) which was renamed ''Çandarli'' (A-588).


Honors and awards

Qualified ''Silas Bent'' personnel were eligible for the following: * Navy Battle "E" Ribbon * National Defense Service Medal


References

*


See also


NavSource: USNS Silas Bent (T-AGS-26)
* United States Navy *
Oceanography Oceanography (), also known as oceanology and ocean science, is the scientific study of the oceans. It is an Earth science, which covers a wide range of topics, including ecosystem dynamics; ocean currents, waves, and geophysical fluid dynamic ...
{{DEFAULTSORT:Silas Bent Ships built in Lorain, Ohio 1964 ships Cold War auxiliary ships of the United States Survey ships of the United States Navy Oceanographic research ships of the United States Navy Ships transferred from the United States Navy to the Turkish Navy