USS ''Harkness'' (AMCU-12/YMS-242) was a acquired by the

U.S. Navy The United States Navy (USN) is the maritime service branch of the United States Department of Defense. It is the world's most powerful navy with the largest displacement, at 4.5 million tons in 2021. It has the world's largest aircraft ...

for the task of removing mines that had been placed in the water to prevent ships from passing. ''Harkness'' was laid down as ''YMS-242'' by

Tacoma Boatbuilding Company Tacoma Boatbuilding Company (sometimes Tacoma Boat) was a shipyard at 1840 Marine View Drive, Tacoma, Washington, in the United States. It was established in 1926 and closed in 1992. History Tacoma Boat was established in 1926 and built man ...

Tacoma, Washington Tacoma ( ) is the county seat of Pierce County, Washington, United States. A port city, it is situated along Washington's Puget Sound, southwest of Seattle, southwest of Bellevue, Washington, Bellevue, northeast of the state capital, Olympia ...

, 1 June 1942; launched 10 October 1942; commissioned 27 March 1943.

Operational history

World War II service

After

shakedown Shakedown or Shake Down may refer to: * Shakedown (continuum mechanics), a type of plastic deformation * Shakedown (testing) or a shakedown cruise, a period of testing undergone by a ship, airplane or other craft before being declared operational ...

along the

California California () is a U.S. state, state in the Western United States that lies on the West Coast of the United States, Pacific Coast. It borders Oregon to the north, Nevada and Arizona to the east, and shares Mexico–United States border, an ...

coast, ''YMS-242'' departed

San Diego, California San Diego ( , ) is a city on the Pacific coast of Southern California, adjacent to the Mexico–United States border. With a population of over 1.4 million, it is the List of United States cities by population, eighth-most populous city in t ...

, 20 August 1943 for duty in the Western

Pacific Ocean The Pacific Ocean is the largest and deepest of Earth's five Borders of the oceans, oceanic divisions. It extends from the Arctic Ocean in the north to the Southern Ocean, or, depending on the definition, to Antarctica in the south, and is ...

. Steaming via

Pearl Harbor Pearl Harbor is an American lagoon harbor on the island of Oahu, Hawaii, west of Honolulu. It was often visited by the naval fleet of the United States, before it was acquired from the Hawaiian Kingdom by the U.S. with the signing of the Reci ...

, she conducted mine sweeping patrols in the

Marshall Marshall may refer to: Places Australia *Marshall, Victoria, a suburb of Geelong, Victoria ** Marshall railway station Canada * Marshall, Saskatchewan * The Marshall, a mountain in British Columbia Liberia * Marshall, Liberia Marshall Is ...

and

Solomon Islands Solomon Islands, also known simply as the Solomons,John Prados, ''Islands of Destiny'', Dutton Caliber, 2012, p,20 and passim is an island country consisting of six major islands and over 1000 smaller islands in Melanesia, part of Oceania, t ...

throughout the next year. As American amphibious forces swept over the Mariannas, she swept for mines and made

reconnaissance In military operations, military reconnaissance () or scouting is the exploration of an area by military forces to obtain information about enemy forces, the terrain, and civil activities in the area of operations. In military jargon, reconnai ...

patrols during the summer and fall of 1944. Following the conquest of the Mariannas, she returned to

25 December before sailing to the

U.S. West Coast The West Coast of the United States, also known as the Pacific Coast and the Western Seaboard, is the coastline along which the Western United States meets the North Pacific Ocean. The term typically refers to the contiguous U.S. states of Cali ...

for conversion to a surveying ship. After conversion by

South Coast Shipyard South Coast Shipyard was a shipbuilding company in Newport Beach, California. To support the World War II demand for ships South Coast Shipyard built: minesweepers, Torpedo Boats, Submarine chasers, & Air-sea rescue boats. South Coast Shipyard ...

Newport Beach, California Newport Beach is a coastal city of about 85,000 in southern Orange County, California, United States. Located about southeast of downtown Los Angeles, Newport Beach is known for its sandy beaches. The city's harbor once supported maritime indu ...

, she was named ''Harkness'' in honor of Rear Admiral

William Harkness William Harkness (December 17, 1837 – February 28, 1903) was an astronomer. He was born at Ecclefechan, Scotland, a son of James (1803–78) and Jane (née Wield) Harkness. His father was a pastor and moved the family to the United States. ...

and reclassified ''AGS-12'' on 24 March 1945. The following month she returned to the Western Pacific where she conducted survey operations in the

Marshalls Marshalls, Inc. is an American chain of discount store, off-price department stores owned by TJX Companies. Marshalls has over 1,000 American stores, including larger stores named Marshalls Mega Store (stores operating with HomeGoods combined), ...

and at

Okinawa most commonly refers to: * Okinawa Prefecture, Japan's southernmost prefecture * Okinawa Island, the largest island of Okinawa Prefecture * Okinawa Islands, an island group including Okinawa itself * Okinawa (city), the second largest city in th ...

. After the end of

World War II World War II or the Second World War (1 September 1939 – 2 September 1945) was a World war, global conflict between two coalitions: the Allies of World War II, Allies and the Axis powers. World War II by country, Nearly all of the wo ...

, she sailed to

Japanese Japanese may refer to: * Something from or related to Japan, an island country in East Asia * Japanese language, spoken mainly in Japan * Japanese people, the ethnic group that identifies with Japan through ancestry or culture ** Japanese diaspor ...

waters for a month of survey work. She returned to

Guam Guam ( ; ) is an island that is an Territories of the United States, organized, unincorporated territory of the United States in the Micronesia subregion of the western Pacific Ocean. Guam's capital is Hagåtña, Guam, Hagåtña, and the most ...

from

Nagoya is the largest city in the Chūbu region of Japan. It is the list of cities in Japan, fourth-most populous city in Japan, with a population of 2.3million in 2020, and the principal city of the Chūkyō metropolitan area, which is the List of ...

, Japan, 4 January 1946; then sailed 10 January for the United States via the Marshalls and

, reaching San Diego 26 February. She sailed 29 March for the

U.S. East Coast The East Coast of the United States, also known as the Eastern Seaboard, the Atlantic Coast, and the Atlantic Seaboard, is the region encompassing the coastline where the Eastern United States meets the Atlantic Ocean; it has always played a m ...

; touched at

Acapulco, Mexico Acapulco de Juárez (), commonly called Acapulco ( , ; ), is a city and major seaport in the state of Guerrero on the Pacific Coast of Mexico, south of Mexico City. Located on a deep, semicircular bay, Acapulco has been a port since the ear ...

, Guantanamo Bay, Cuba, and

Norfolk, Virginia Norfolk ( ) is an independent city (United States), independent city in the U.S. state of Virginia. It had a population of 238,005 at the 2020 United States census, 2020 census, making it the List of cities in Virginia, third-most populous city ...

; and arrived

New York New York most commonly refers to: * New York (state), a state in the northeastern United States * New York City, the most populous city in the United States, located in the state of New York New York may also refer to: Places United Kingdom * ...

8 May.

Reclassified as AGSC-12

Following overhaul, ''Harkness'' departed 25 July for

Miami, Florida Miami is a East Coast of the United States, coastal city in the U.S. state of Florida and the county seat of Miami-Dade County, Florida, Miami-Dade County in South Florida. It is the core of the Miami metropolitan area, which, with a populat ...

, and arrived 29 July to reclassify as ''AGSC-12''. For more than 3 years she operated out of Miami, participating in extensive ocean surveys from the

Gulf of Mexico The Gulf of Mexico () is an oceanic basin and a marginal sea of the Atlantic Ocean, mostly surrounded by the North American continent. It is bounded on the northeast, north, and northwest by the Gulf Coast of the United States; on the southw ...

to the North

Atlantic Ocean The Atlantic Ocean is the second largest of the world's five borders of the oceans, oceanic divisions, with an area of about . It covers approximately 17% of Earth#Surface, Earth's surface and about 24% of its water surface area. During the ...

. During much of 1947 she patrolled the Mexican coast off

Vera Cruz, Mexico Veracruz, formally Veracruz de Ignacio de la Llave, officially the Free and Sovereign State of Veracruz de Ignacio de la Llave, is one of the 31 states which, along with Mexico City, comprise the 32 Political divisions of Mexico, Federal Entit ...

. ''Harkness'' surveyed coastal waters off

Labrador Labrador () is a geographic and cultural region within the Canadian province of Newfoundland and Labrador. It is the primarily continental portion of the province and constitutes 71% of the province's area but is home to only 6% of its populatio ...

and

Newfoundland Newfoundland and Labrador is the easternmost province of Canada, in the country's Atlantic region. The province comprises the island of Newfoundland and the continental region of Labrador, having a total size of . As of 2025 the population ...

from July to October 1948 and 1949; and survey work continued for the first 5 months of 1950 in the

Caribbean The Caribbean ( , ; ; ; ) is a region in the middle of the Americas centered around the Caribbean Sea in the Atlantic Ocean, North Atlantic Ocean, mostly overlapping with the West Indies. Bordered by North America to the north, Central America ...

between

Trinidad Trinidad is the larger, more populous island of the Republic of Trinidad and Tobago, the country. The island lies off the northeastern coast of Venezuela and sits on the continental shelf of South America. It is the southernmost island in ...

and

Venezuela Venezuela, officially the Bolivarian Republic of Venezuela, is a country on the northern coast of South America, consisting of a continental landmass and many Federal Dependencies of Venezuela, islands and islets in the Caribbean Sea. It com ...

. She returned to

later in the year and decommissioned 22 September 1950.

Converted into a minehunter

''Harkness'' was converted to a minehunter by

Brooklyn Navy Yard The Brooklyn Navy Yard (originally known as the New York Navy Yard) is a shipyard and industrial complex in northwest Brooklyn in New York City, New York (state), New York, U.S. The Navy Yard is located on the East River in Wallabout Bay, a se ...

; reclassified ''AMCU-12'' on 18 August 1951; and recommissioned 5 September 1951. Assigned to the Atlantic Fleet Mine Force, she departed New York 2 July 1952 and arrived

, the next day. The next year she steamed to

Charleston, South Carolina Charleston is the List of municipalities in South Carolina, most populous city in the U.S. state of South Carolina. The city lies just south of the geographical midpoint of South Carolina's coastline on Charleston Harbor, an inlet of the Atla ...

, and

Key West, Florida Key West is an island in the Straits of Florida, at the southern end of the U.S. state of Florida. Together with all or parts of the separate islands of Sigsbee Park, Dredgers Key, Fleming Key, Sunset Key, and the northern part of Stock Islan ...

, and

Panama City, Florida Panama City is a city in and the county seat of Bay County, Florida, United States. Located along U.S. Route 98 in Florida, U.S. Highway 98 (US 98), it is the largest city between Tallahassee, Florida, Tallahassee and Pensacola, Florida, Pe ...

, while involved with training exercises and other operations. Assigned along the Atlantic Coast to the

5th Naval District United States Naval Districts is a system created by the United States Navy to organize military facilities, numbered sequentially by geographic region, for the operational and administrative control of naval bases and shore commands in the Unit ...

in October 1953, ''Harkness'' again participated in training operations, primarily in the

Virginia Capes The Virginia Capes are the two capes, Cape Charles to the north and Cape Henry to the south, that define the entrance to the Chesapeake Bay on the eastern coast of North America. The importance of the Chesapeake Bay in American history has lo ...

Operation Area, finally steaming to

Newport, Rhode Island Newport is a seaside city on Aquidneck Island in Rhode Island, United States. It is located in Narragansett Bay, approximately southeast of Providence, Rhode Island, Providence, south of Fall River, Massachusetts, south of Boston, and nort ...

, during June 1954 for channel clearance operations. Reclassified ''MHC-12'' on 1 February 1955, she continued her part in numerous mine clearing exercises, in July 1957 even operating in

Cuba Cuba, officially the Republic of Cuba, is an island country, comprising the island of Cuba (largest island), Isla de la Juventud, and List of islands of Cuba, 4,195 islands, islets and cays surrounding the main island. It is located where the ...

n waters out of

Guantánamo Bay Guantánamo Bay (, ) is a bay in Guantánamo Province at the southeastern end of Cuba. It is the largest harbor on the south side of the island and it is surrounded by steep hills which create an enclave that is cut off from its immediate hint ...

and

Havana, Cuba Havana (; ) is the capital and largest city of Cuba. The heart of La Habana Province, Havana is the country's main port and commercial center.Little Creek, Virginia Little is a synonym for small size and may refer to: Arts and entertainment * ''Little'' (album), 1990 debut album of Vic Chesnutt * ''Little'' (film), 2019 American comedy film *The Littles, a series of children's novels by American author John P ...

, 30 January 1958 and arrived

Green Cove Springs, Florida Green Cove Springs is a city in and the county seat of Clay County, Florida, United States. Green Cove Springs is a part of the Jacksonville, Florida Metropolitan Statistical Area. The population was 9,786 at the 2020 census, up from 6,908 at ...

, via

Jacksonville, Florida Jacksonville ( ) is the most populous city proper in the U.S. state of Florida, located on the Atlantic coast of North Florida, northeastern Florida. It is the county seat of Duval County, Florida, Duval County, with which the City of Jacksonv ...

, 3 February. She decommissioned 2 April 1958 and entered the

Atlantic Reserve Fleet The United States Navy maintains a number of its ships as part of a reserve fleet, often called the "Mothball Fleet". While the details of the maintenance activity have changed several times, the basics are constant: keep the ships afloat and s ...

. Her name was struck from the

Naval Register A Navy Directory, 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 co ...

1 November 1959.

Awards and honors

''Harkness'' received one

battle star A service star is a miniature bronze or silver five-pointed star in diameter that is authorized to be worn by members of the eight uniformed services of the United States on medals and ribbons to denote an additional award or service period. T ...

for

service.

References

External links

* {{DEFAULTSORT:Harkness (AMCU-12) YMS-1-class minesweepers of the United States Navy Ships built by Tacoma Boatbuilding Company 1942 ships World War II minesweepers of the United States Survey ships of the United States Navy Harkness-class minehunters Cold War minehunters of the United States