USS Persistent (MSO-491)
Encyclopedia
USS Persistent (AM-491/MSO-491) was an Aggressive-class
minesweeper
acquired by the U.S. Navy for the task of removing mines that had been placed in the water to prevent the safe passage of ships.
The second ship to be named Persistent
by the Navy, MSO–491 was laid down 17 June 1954 as AM491 by J. M. Martinac Shipbuilding Corp., Tacoma, Washington
; reclassified MSO–491 on 7 February 1955; launched 23 April 1955; sponsored by Mrs. M.S. Erdahl; and commissioned 3 February 1956, Lt. Theodore R. Johnson in command.
for Mine Division 91 the same day. In September 1956 she was modified for advanced sound reduction to protect against acoustic mines.
In August 1957 she deployed to WestPac
as part of Mine Countermeasures Group, U.S. 7th Fleet. After return to Long Beach, California
, for regular overhaul in February 1958 and completion of type training that year, she engaged in research at the Navy Acoustic Range, Puget Sound
, September 1959. Later that year she measured ocean currents under assignment to Scripps Institute of Oceanography.
After another deployment to WestPac
in 1960, she returned to California
in July. After type training in 1961, she deployed to WestPac in January 1962, assisting in the training of South Vietnam
ese sailors from January to August. After domestic operations in 1963, she deployed annually to WestPac from 1964 to 1968. Into 1970 she remained active with the U.S. Pacific Fleet.
on 1 August 1974. In 1974, she was sold to Spain
, which named her Guadalquivir (M43).
Aggressive class minesweeper
The Aggressive class minesweepers are a class of US-built minesweepers. They are designated as MSO , distinguishing them from the smaller coastal MSCs and inshore MSIs...
minesweeper
Minesweeper (ship)
A minesweeper is a small naval warship designed to counter the threat posed by naval mines. Minesweepers generally detect then neutralize mines in advance of other naval operations.-History:...
acquired by the U.S. Navy for the task of removing mines that had been placed in the water to prevent the safe passage of ships.
The second ship to be named Persistent
Persistent
Persistent may refer to:* Persistent Systems, a technology company* USS Persistent, three United States Navy ships...
by the Navy, MSO–491 was laid down 17 June 1954 as AM491 by J. M. Martinac Shipbuilding Corp., Tacoma, Washington
Tacoma, Washington
Tacoma is a mid-sized urban port city and the county seat of Pierce County, Washington, United States. The city is on Washington's Puget Sound, southwest of Seattle, northeast of the state capital, Olympia, and northwest of Mount Rainier National Park. The population was 198,397, according to...
; reclassified MSO–491 on 7 February 1955; launched 23 April 1955; sponsored by Mrs. M.S. Erdahl; and commissioned 3 February 1956, Lt. Theodore R. Johnson in command.
West Coast operations
Following Pacific coast shakedown, Persistent reported for duty to Commander, Pacific Fleet, 2 March 1956 and was designated flagshipFlagship
A flagship is a vessel used by the commanding officer of a group of naval ships, reflecting the custom of its commander, characteristically a flag officer, flying a distinguishing flag...
for Mine Division 91 the same day. In September 1956 she was modified for advanced sound reduction to protect against acoustic mines.
In August 1957 she deployed to WestPac
Westpac
Westpac , is a multinational financial services, one of the Australian "big four" banks and the second-largest bank in New Zealand....
as part of Mine Countermeasures Group, U.S. 7th Fleet. After return to Long Beach, California
Long Beach, California
Long Beach is a city situated in Los Angeles County in Southern California, on the Pacific coast of the United States. The city is the 36th-largest city in the nation and the seventh-largest in California. As of 2010, its population was 462,257...
, for regular overhaul in February 1958 and completion of type training that year, she engaged in research at the Navy Acoustic Range, Puget Sound
Puget Sound
Puget Sound is a sound in the U.S. state of Washington. It is a complex estuarine system of interconnected marine waterways and basins, with one major and one minor connection to the Strait of Juan de Fuca and the Pacific Ocean — Admiralty Inlet being the major connection and...
, September 1959. Later that year she measured ocean currents under assignment to Scripps Institute of Oceanography.
After another deployment to WestPac
Westpac
Westpac , is a multinational financial services, one of the Australian "big four" banks and the second-largest bank in New Zealand....
in 1960, she returned to California
California
California is a state located on the West Coast of the United States. It is by far the most populous U.S. state, and the third-largest by land area...
in July. After type training in 1961, she deployed to WestPac in January 1962, assisting in the training of South Vietnam
South Vietnam
South Vietnam was a state which governed southern Vietnam until 1975. It received international recognition in 1950 as the "State of Vietnam" and later as the "Republic of Vietnam" . Its capital was Saigon...
ese sailors from January to August. After domestic operations in 1963, she deployed annually to WestPac from 1964 to 1968. Into 1970 she remained active with the U.S. Pacific Fleet.
Decommissioning
Persistent was decommissioned on 1 July 1971 and struck from the Navy listNavy List
A Navy List or Naval Register is an official list of naval officers, their ranks and seniority, the ships which they command or to which they are appointed, etc., that is published by the government or naval authorities of a country....
on 1 August 1974. In 1974, she was sold to Spain
Spain
Spain , officially the Kingdom of Spain languages]] under the European Charter for Regional or Minority Languages. In each of these, Spain's official name is as follows:;;;;;;), is a country and member state of the European Union located in southwestern Europe on the Iberian Peninsula...
, which named her Guadalquivir (M43).