USS IMPERVIOUS (MSO-449)
Impervious (AM-449) was launched by Martinolich Shipbuilding Co., San Diego, Calif., 29 August
1952 ; sponsored
by Miss Mary Lin Moore; and commissioned 15 July 1954, Lt. Comdr. A. T. Ford in command.
shakedown and mine warfare training off the California coast, Impervious was
reclassified MSO-449 on 7 February 1955. She sailed 1 July with her division for duty in the
Far East with the 7th Fleet, arriving Sasebo via Pearl Harbor 5 August. During this deployment, she operated
with ships of the Republic of Korea Navy and visited Taiwan before returning to her home port, Long Beach, 15
February 1956. During the next two years she operated out of Long Beach.
Impervious sailed for her second 7th Fleet deployment 3 January 1958, and during
the next 6 months trained in Japanese waters. She also helped train Nationalist Chinese crews during
April and May, preparing them to help to preserve the freedom and independence of Taiwan.
minesweeper returned to Long Beach 15 July 1958, and during September took part in a giant amphibious
Camp Pendelton, Calif.
April 1959 Impervious interrupted her regular training schedule to take part
in a joint mine warfare exercise with Canadian ships, and spent the rest of the year on training exercises in
California waters. In early 1960 the ship prepared for another deployment to the Far Bast, sailing 3 May for
Japan. During August she participated in maneuvers with Korean and Nationalist Chinese ships, and in
October Impervious operated with units of the Philippine Navy in similar
operations off Corregidor. She sailed via Guam and Pearl Harbor to Long Beach, arriving 16
The ship spent 1961
and early 1962 on important readiness
operations, visiting several West Coast ports, and sailed again for 7th Fleet duty 7 April 1962. After
training in the Philippines the minesweeper spent part of July on patrol with Vietnamese Naval units off Danang,
and the Navy supported the South Vietnamese people in their fight for freedom. She visited Hong Kong and
Yokosuka before arriving Pearl Harbor
8 September 1962. During October and November, Impervious took part in
atomic tests at Johnson Island, and
arrived Long Beach 21 November.
March 1963 the ship took part in another large amphibious operation,
"Steelgate", then worked out of Long Beach before again joining Canadian ships for mine warfare
exercises off British Columbia in November. She got underway for the western Pacific again 8 May 1964, and after stopping at various islands moved to the
coast of South Vietnam in September for special operations supporting the American Advisory unit. After mine
exercises off the Philippines she returned Long Beach 7 December 1964. The following 12 months were spent in
tactics and exercises along the coast of southern California, overhaul at Los Angeles, and readiness
operations to prepare her for another
Far Eastern deployment assisting
Allied forces to defend freedom in Southeast Asia.
[Note: The above USS IMPERVIOUS (MSO-449) history may, or may not, contain text provided by crew members of the USS IMPERVIOUS (MSO-449), or by other non-crew members, and text from the Dictionary of American Naval Fighting Ships]