USS ''Cocopa'' (ATF-101) was an

fleet ocean tug A tugboat or tug is a marine vessel that manoeuvres other vessels by pushing or pulling them, with direct contact or a tow line. These boats typically tug ships in circumstances where they cannot or should not move under their own power, su ...

that served on active duty with the

U.S. Navy The United States Navy (USN) is the maritime service branch of the United States Armed Forces and one of the eight uniformed services of the United States. It is the largest and most powerful navy in the world, with the estimated tonnage o ...

from 1944 to 1978, seeing action in

World War II World War II or the Second World War, often abbreviated as WWII or WW2, was a world war that lasted from 1939 to 1945. It involved the vast majority of the world's countries—including all of the great powers—forming two opposing ...

, the

Korean War , date = {{Ubl, 25 June 1950 – 27 July 1953 (''de facto'')({{Age in years, months, weeks and days, month1=6, day1=25, year1=1950, month2=7, day2=27, year2=1953), 25 June 1950 – present (''de jure'')({{Age in years, months, weeks a ...

and the

Vietnam War The Vietnam War (also known by other names) was a conflict in Vietnam, Laos, and Cambodia from 1 November 1955 to the fall of Saigon on 30 April 1975. It was the second of the Indochina Wars and was officially fought between North Vietnam a ...

. After thirty-four years of service, she was sold to the

Mexican Navy The Mexican Navy is one of the two independent armed forces of Mexico. The actual naval forces are called the ''Armada de México''. The ''Secretaría de Marina'' (''SEMAR'') (English: Naval Secretariat) includes both the ''Armada'' itself and ...

, where she was still in service as of 2009.

World War II

''Cocopa'' was named after an

Arizona Arizona ( ; nv, Hoozdo Hahoodzo ; ood, Alĭ ṣonak ) is a state in the Southwestern United States. It is the 6th largest and the 14th most populous of the 50 states. Its capital and largest city is Phoenix. Arizona is part of the Fou ...

Indian Indian or Indians may refer to: Peoples South Asia * Indian people, people of Indian nationality, or people who have an Indian ancestor ** Non-resident Indian, a citizen of India who has temporarily emigrated to another country * South Asia ...

tribe The term tribe is used in many different contexts to refer to a category of human social group. The predominant worldwide usage of the term in English is in the discipline of anthropology. This definition is contested, in part due to confli ...

. She began her naval career with the Atlantic fleet during the waning months of World War II, making two passages across the

Atlantic The Atlantic Ocean is the second-largest of the world's five oceans, with an area of about . It covers approximately 20% of Earth's surface and about 29% of its water surface area. It is known to separate the " Old World" of Africa, Europe an ...

with

barge Barge nowadays generally refers to a flat-bottomed inland waterway vessel which does not have its own means of mechanical propulsion. The first modern barges were pulled by tugs, but nowadays most are pushed by pusher boats, or other vessels ...

s in tow, followed by a third passage to

Trinidad Trinidad is the larger and more populous of the two major islands of Trinidad and Tobago. The island lies off the northeastern coast of Venezuela and sits on the continental shelf of South America. It is often referred to as the southernmos ...

. Her second

convoy A convoy is a group of vehicles, typically motor vehicles or ships, traveling together for mutual support and protection. Often, a convoy is organized with armed defensive support and can help maintain cohesion within a unit. It may also be used ...

was attacked by a German

U-boat U-boats were naval submarines operated by Germany, particularly in the First and Second World Wars. Although at times they were efficient fleet weapons against enemy naval warships, they were most effectively used in an economic warfare ro ...

, with ''Cocopa'' barely escaping destruction. ''Cocopa'' was next ordered to the Pacific theater, witnessing the final days of the war between July and August of that year.

V-J day Victory over Japan Day (also known as V-J Day, Victory in the Pacific Day, or V-P Day) is the day on which Imperial Japan surrendered in World War II, in effect bringing the war to an end. The term has been applied to both of the days on ...

found the ship in

Leyte Leyte ( ) is an island in the Visayas group of islands in the Philippines. It is eighth-largest and sixth-most populous island in the Philippines, with a total population of 2,626,970 as of 2020 census. Since the accessibility of land has be ...

, Philippines.

Interwar service

Following World War II, ''Cocopa'' shuttled between the Philippines,

Shanghai Shanghai (; , , Standard Mandarin pronunciation: ) is one of the four direct-administered municipalities of the People's Republic of China (PRC). The city is located on the southern estuary of the Yangtze River, with the Huangpu River flowin ...

Okinawa is a prefecture of Japan. Okinawa Prefecture is the southernmost and westernmost prefecture of Japan, has a population of 1,457,162 (as of 2 February 2020) and a geographic area of 2,281 km2 (880 sq mi). Naha is the capital and largest city ...

and

Hong Kong Hong Kong ( (US) or (UK); , ), officially the Hong Kong Special Administrative Region of the People's Republic of China (abbr. Hong Kong SAR or HKSAR), is a city and special administrative region of China on the eastern Pearl River Delta i ...

on occupation duty, before returning to

Puget Sound Naval Shipyard Puget Sound Naval Shipyard, officially Puget Sound Naval Shipyard and Intermediate Maintenance Facility (PSNS & IMF), is a United States Navy shipyard covering 179 acres (0.7 km2) on Puget Sound at Bremerton, Washington in uninterrupted ...

in January 1947 for an overhaul. From 1948–49 she plied

Alaska Alaska ( ; russian: Аляска, Alyaska; ale, Alax̂sxax̂; ; ems, Alas'kaaq; Yup'ik: ''Alaskaq''; tli, Anáaski) is a state located in the Western United States on the northwest extremity of North America. A semi-exclave of the U.S. ...

n waters. In June 1951, having returned to the Far East, ''Cocopa'' accepted what many writers have termed the last Japanese surrender from World War II.

Lieutenant Commander Lieutenant commander (also hyphenated lieutenant-commander and abbreviated Lt Cdr, LtCdr. or LCDR) is a commissioned officer rank in many navies. The rank is superior to a lieutenant and subordinate to a commander. The corresponding ran ...

James B. Johnson accepted the capitulation of nineteen Japanese soldiers who had been living on the island of

Anatahan Anatahan is an island in the Northern Mariana Islands in the Pacific Ocean, and has one of the most active volcanoes of the archipelago. Although formerly inhabited, the island is currently uninhabited due to the constant danger of volcanic er ...

, in the

Northern Mariana Islands The Northern Mariana Islands, officially the Commonwealth of the Northern Mariana Islands (CNMI; ch, Sankattan Siha Na Islas Mariånas; cal, Commonwealth Téél Falúw kka Efáng llól Marianas), is an unincorporated territory and commonw ...

. The ship repatriated these men and their personal effects to

Guam Guam (; ch, Guåhan ) is an organized, unincorporated territory of the United States in the Micronesia subregion of the western Pacific Ocean. It is the westernmost point and territory of the United States (reckoned from the geographic cent ...

, from whence they were ultimately returned to Japan. However, other Japanese holdouts continued to surrender over the next few decades, though in much smaller numbers.

Korean War

''Cocopa'' saw action in the Korean War during the summer of 1953. During this period she served off both Korean coasts; in one operation, she towed , a

Royal Canadian Navy The Royal Canadian Navy (RCN; french: Marine royale canadienne, ''MRC'') is the naval force of Canada. The RCN is one of three environmental commands within the Canadian Armed Forces. As of 2021, the RCN operates 12 frigates, four attack submar ...

destroyer that had

run aground Ship grounding or ship stranding is the impact of a ship on seabed or waterway side. It may be intentional, as in beaching to land crew or cargo, and careening, for maintenance or repair, or unintentional, as in a marine accident. In accidenta ...

on the island of Pang Yang-Do, just off the

North Korea North Korea, officially the Democratic People's Republic of Korea (DPRK), is a country in East Asia. It constitutes the northern half of the Korean Peninsula and shares borders with China and Russia to the north, at the Yalu (Amnok) and T ...

n coast well north of enemy-held

Wonsan Wŏnsan (), previously known as Wŏnsanjin (), Port Lazarev, and Genzan (), is a port city and naval base located in Kangwŏn Province, North Korea, along the eastern side of the Korean Peninsula, on the Sea of Japan and the provincial capital. ...

harbor. At the time of the armistice, she went to Wonsan to aid in the removal of a Marine garrison occupying a small islet at the harbor's mouth. During the Korean War, USS ''Cocopa'' received one

battle star A service star is a miniature bronze or silver five-pointed star inch (4.8 mm) 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 ser ...

for her service. After the war, ''Cocopa'' conducted numerous Pacific Ocean and Alaskan cruises. Her home port was changed from

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 R ...

San Diego San Diego ( , ; ) is a city on the Pacific Ocean coast of Southern California located immediately adjacent to the Mexico–United States border. With a 2020 population of 1,386,932, it is the eighth most populous city in the United State ...

in 1961.

Operation Castle

In March 1954, ''Cocopa'' was one of the ships tasked to support

Operation Castle Operation Castle was a United States series of high-yield (high-energy) nuclear tests by Joint Task Force 7 (JTF-7) at Bikini Atoll beginning in March 1954. It followed ''Operation Upshot–Knothole'' and preceded ''Operation Teapot''. Condu ...

, a series of high-energy (high-yield)

nuclear test Nuclear weapons tests are experiments carried out to determine nuclear weapons' effectiveness, Nuclear weapon yield, yield, and explosive capability. Testing nuclear weapons offers practical information about how the weapons function, how detona ...

s by Joint Task Force SEVEN (JTF-7) at

Bikini Atoll Bikini Atoll ( or ; Marshallese: , , meaning "coconut place"), sometimes known as Eschscholtz Atoll between the 1800s and 1946 is a coral reef in the Marshall Islands consisting of 23 islands surrounding a central lagoon. After the Seco ...

. Official reports indicated that crewmembers suffered the highest doses (2.2 rem) of radiation endured by any of the navy ships present at this operation.

Vietnam War

During the Vietnam War, ''Cocopa'' saw service in five campaigns: ''Advisory'' (1963), ''Vietnam Defense'' (1965), ''Counteroffensive Phase II'' (1967), ''Summer-Fall 1969'', and ''Ceasefire'' (1972). In 1965, ''Cocopa'' hosted Detachment Charlie of

Beach Jumpers Beach Jumpers were U.S. Navy special warfare units organized during World War II by Lieutenant Douglas Fairbanks Jr. They specialized in deception and psychological warfare. The units were active from 1943 to 1946 and 1951 to 1972. Inspired by ...

Unit One, Team Twelve, operating as the "Yankee Station Special Surveillance Unit". This outfit consisted of one

officer An officer is a person who has a position of authority in a hierarchical organization. The term derives from Old French ''oficier'' "officer, official" (early 14c., Modern French ''officier''), from Medieval Latin ''officiarius'' "an officer," f ...

and five

enlisted men An enlisted rank (also known as an enlisted grade or enlisted rate) is, in some armed services, any rank below that of a commissioned officer. The term can be inclusive of non-commissioned officers or warrant officers, except in United States ...

, whose mission was to jam

Soviet The Soviet Union,. officially the Union of Soviet Socialist Republics. (USSR),. was a transcontinental country that spanned much of Eurasia from 1922 to 1991. A flagship communist state, it was nominally a federal union of fifteen nation ...

electronic intelligence Signals intelligence (SIGINT) is intelligence-gathering by interception of '' signals'', whether communications between people (communications intelligence—abbreviated to COMINT) or from electronic signals not directly used in communication ...

trawlers Trawler may refer to: Boats * Fishing trawler, used for commercial fishing * Naval trawler, a converted trawler, or a boat built in that style, used for naval purposes ** Trawlers of the Royal Navy * Recreational trawler, a pleasure boat built t ...

monitoring U.S. operations in the Gulf of Tonkin. Team members utilized random wave jamming with noises (including

bagpipe Bagpipes are a woodwind instrument using enclosed reeds fed from a constant reservoir of air in the form of a bag. The Great Highland bagpipes are well known, but people have played bagpipes for centuries throughout large parts of Europe, ...

recordings) to counteract Russian SIGINT activities. ''Cocopa'' also assisted in towing, recovery and similar operations throughout her tours in Vietnam.

Awards

American Campaign Medal The American Campaign Medal is a military award of the United States Armed Forces which was first created on November 6, 1942, by issued by President Franklin D. Roosevelt. The medal was intended to recognize those military members who had perfo ...

* European-African-Middle Eastern Campaign Medal * Asiatic-Pacific Campaign Medal) *

World War II Victory Medal The World War II Victory Medal is a service medal of the United States military which was established by an Act of Congress on 6 July 1945 (Public Law 135, 79th Congress) and promulgated by Section V, War Department Bulletin 12, 1945. The Wo ...

Navy Occupation Service Medal The Navy Occupation Service Medal is a military award of the United States Navy which was "Awarded to commemorate the services of Navy, Marine Corps and Coast Guard personnel in the occupation of certain territories of the enemies of the U.S. durin ...

National Defense Service Medal The National Defense Service Medal (NDSM) is a service award of the United States Armed Forces established by President Dwight D. Eisenhower in 1953. It is awarded to every member of the US Armed Forces who has served during any one of four ...

with star *

Korean Service Medal The Korean Service Medal (KSM) is a military award for service in the United States Armed Forces and was established November 8, 1950 by executive order of President Harry Truman. The Korean Service Medal is the primary US military award for s ...

with one

Armed Forces Expeditionary Medal The Armed Forces Expeditionary Medal (AFEM) is a military award of the United States Armed Forces, which was first created in 1961 by Executive Order of President John Kennedy. The medal is awarded to members of the U.S. Armed Forces who, after ...

Vietnam Service Medal The Vietnam Service Medal is a military award of the United States Armed Forces established on 8 July 1965 by order of President Lyndon B. Johnson. The medal is awarded to recognize service during the Vietnam War by all members of the U.S. Arm ...

with five campaign stars *

United Nations Korea Medal The United Nations Service Medal for Korea (UNKM) is an international military decoration established by the United Nations on December 12, 1950 as the United Nations Service Medal. The decoration was the first international award ever created by t ...

Republic of Korea War Service Medal The Korean War Service Medal (KWSM, ko, 6.25사변종군기장, ), also known as the Republic of Korea War Service Medal (ROKWSM), is a military award of South Korea which was first authorized in December 1950. History 6.25 Incident Participati ...

Republic of Vietnam Campaign Medal The Republic of Vietnam Campaign Medal, also known as the Vietnam Campaign Medal ( vi, Chiến Dịch Bội Tinh), is a South Vietnamese military campaign medal which was created in 1949, and awarded to French military personnel during the First ...

Mexican Navy service

On 30 September 1978, ''Cocopa'' was decommissioned and sold to

Mexico Mexico (Spanish: México), officially the United Mexican States, is a country in the southern portion of North America. It is bordered to the north by the United States; to the south and west by the Pacific Ocean; to the southeast by Guatema ...

under the Security Assistance Program, where she was recommissioned in the Mexican Navy as ARM ''Seri'' (RE-03). As of 2009 the ship remains on active duty with that force.

References

Bibliography

Task Force 77
Contains brief, detailed info on ''Cocopa's'' Korean War service.

Describes role of the ''Cocopa'' (referred to in this report as "the tug") in towing the damaged ''Huron''. *

External links

USS ''Cocopa''
Offers several photos from the ''Cocopa's'' service, circa 1952-78.
Last Defenders of the Japanese Empire
Photo of 19 Japanese soldiers on Anatahan surrendering to Lt. Cmdr. J.B. Johnson, captain of the ''Cocopa''.

by Steven Karoly. Personal account by a ''Cocopa'' cook of a stormy voyage to Vietnam in 1972.
Adventures of the ''Cocopa''
Personal photographs taken by the ship's electronic technician, 1973 to 1978. {{DEFAULTSORT:Cocopa Abnaki-class tugs Ships built in Charleston, South Carolina 1944 ships World War II naval ships of the United States Ships transferred from the United States Navy to the Mexican Navy