USS Koka (ATA-185) was a US Navy tugboat

Tugboat

A tugboat is a boat that maneuvers vessels by pushing or towing them. Tugs move vessels that either should not move themselves, such as ships in a crowded harbor or a narrow canal,or those that cannot move by themselves, such as barges, disabled ships, or oil platforms. Tugboats are powerful for...

. Koka is from the phonetic spelling of Coca, formerly an Indian village in southern Arizona

Arizona

Arizona ; is a state located in the southwestern region of the United States. It is also part of the western United States and the mountain west. The capital and largest city is Phoenix...

. Originally designated as ATR-112, she was redesignated as ATA-185 on 15 May 1944; launched 11 September 1944, by Levingston Shipbuilding Co., Orange, Texas

Orange, Texas

Orange is a city in Orange County, Texas, United States. As of the 2000 census, the city population was 18,643. It is the county seat of Orange County, and is the easternmost city in Texas. Located on the Sabine River at the border with Louisiana, it is part of the Beaumont–Port Arthur...

; and commissioned on 16 November, Lt. (j.g.) Woodrow Sullivan in command.

After shakedown

Shakedown (testing)

A shakedown is a period of testing or a trial journey undergone by a ship, aircraft or other craft and its crew before being declared operational. Statistically, a proportion of the components will fail after a relatively short period of use, and those that survive this period can be expected to...

 in the Gulf of Mexico

Gulf of Mexico

The Gulf of Mexico is a partially landlocked ocean basin largely surrounded by the North American continent and the island of Cuba. It is bounded on the northeast, north and northwest by the Gulf Coast of the United States, on the southwest and south by Mexico, and on the southeast by Cuba. In...

, ATA-185 departed Galveston 14 December for duty in the Pacific. She reached Eniwetok, Marshalls

Marshall Islands

The Republic of the Marshall Islands , , is a Micronesian nation of atolls and islands in the middle of the Pacific Ocean, just west of the International Date Line and just north of the Equator. As of July 2011 the population was 67,182...

, 26 February 1945; and for more than 5 months she operated out of Eniwetok; Guam

Guam

Guam is an organized, unincorporated territory of the United States located in the western Pacific Ocean. It is one of five U.S. territories with an established civilian government. Guam is listed as one of 16 Non-Self-Governing Territories by the Special Committee on Decolonization of the United...

 and Saipan

Saipan

Saipan is the largest island of the United States Commonwealth of the Northern Mariana Islands , a chain of 15 tropical islands belonging to the Marianas archipelago in the western Pacific Ocean with a total area of . The 2000 census population was 62,392...

, Marianas

Mariana Islands

The Mariana Islands are an arc-shaped archipelago made up by the summits of 15 volcanic mountains in the north-western Pacific Ocean between the 12th and 21st parallels north and along the 145th meridian east...

; Ulithi

Ulithi

Ulithi is an atoll in the Caroline Islands of the western Pacific Ocean, about 191 km east of Yap. It consists of 40 islets totalling , surrounding a lagoon about long and up to wide—at one of the largest in the world. It is administered by the state of Yap in the Federated States of...

, Carolines

Caroline Islands

The Caroline Islands are a widely scattered archipelago of tiny islands in the western Pacific Ocean, to the north of New Guinea. Politically they are divided between the Federated States of Micronesia in the eastern part of the group, and Palau at the extreme western end...

; and Kerama, Ryūkyūs

Ryukyu Islands

The , also known as the , is a chain of islands in the western Pacific, on the eastern limit of the East China Sea and to the southwest of the island of Kyushu in Japan. From about 1829 until the mid 20th century, they were alternately called Luchu, Loochoo, or Lewchew, akin to the Mandarin...

, while performing a variety of towing services. After a month of target sled towing duty at Guam, ATA-185 departed 4 August for Okinawa, where she arrived 11 August with two barges in tow. As a unit of SerRon 12, she performed tug and salvage operations in Buckner Bay until 3 November when she departed for the United States

United States

The United States of America is a federal constitutional republic comprising fifty states and a federal district...

. Steaming via Eniwetok and Pearl Harbor

Pearl Harbor

Pearl Harbor, known to Hawaiians as Puuloa, is a lagoon harbor on the island of Oahu, Hawaii, west of Honolulu. Much of the harbor and surrounding lands is a United States Navy deep-water naval base. It is also the headquarters of the U.S. Pacific Fleet...

, she arrived San Francisco 1 February 1946 with YNG-30 and YNG-38 in tow.

Clearing San Francisco Bay

San Francisco Bay

San Francisco Bay is a shallow, productive estuary through which water draining from approximately forty percent of California, flowing in the Sacramento and San Joaquin rivers from the Sierra Nevada mountains, enters the Pacific Ocean...

 22 March, ATA-185 reached Pearl Harbor 13 April to prepare for participation in atomic weapons tests in the Marshall Islands. Departing Pearl 11 May, she assisted in mooring target ships for Operation Crossroads

Operation Crossroads

Operation Crossroads was a series of nuclear weapon tests conducted by the United States at Bikini Atoll in mid-1946. It was the first test of a nuclear weapon after the Trinity nuclear test in July 1945...

 at Bikini Atoll

Bikini Atoll

Bikini Atoll is an atoll, listed as a World Heritage Site, in the Micronesian Islands of the Pacific Ocean, part of Republic of the Marshall Islands....

. After the tests she recovered radiological instruments from various target ship

Target ship

A target ship is a vessel — typically an obsolete or captured warship — used for naval gunnery practice or for weapons testing.-Rationale:Sinking redundant warships is an effective way of testing new weapons and warships in as realistic a manner as possible. Whilst practice torpedoes are fired...

s, including , former , and former . Departing Bikini 5 September, she reached Pearl Harbor 20 September then underwent a 4-month overhaul.

ATA-185 departed Pearl Harbor 20 January 1947, and arrived San Diego 3 February with LCI-1062 in tow. She was assigned to the 11th Naval District for coastal towing. Renamed Koka (ATA-185) on 16 July 1948, most of her towing assignments have carried her to Long Beach

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...

, Port Hueneme

Port Hueneme, California

Port Hueneme is a small beach city in Ventura County, California surrounded by the city of Oxnard and the Pacific Ocean. The name derives from the Spanish spelling of the Chumash wene me, meaning "Resting Place". The area was discovered by Juan Rodríguez Cabrillo in the mid 16th century...

, San Pedro

San Pedro Bay (California)

San Pedro Bay is an inlet on the Pacific Ocean coast of southern California, United States. It is the site of the Port of Los Angeles and the Port of Long Beach, which together form the fifth-busiest port facility in the world and easily the busiest in the Western Hemisphere...

, and San Francisco. Over the years she has traveled the Pacific coast from 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...

 to Alaska

Alaska

Alaska is the largest state in the United States by area. It is situated in the northwest extremity of the North American continent, with Canada to the east, the Arctic Ocean to the north, and the Pacific Ocean to the west and south, with Russia further west across the Bering Strait...

 while towing barges and district craft to Kodiak, Alaska

Kodiak, Alaska

Kodiak is one of 7 communities and the main city on Kodiak Island, Kodiak Island Borough, in the U.S. state of Alaska. All commercial transportation between the entire island and the outside world goes through this city either via ferryboat or airline...

; Seattle, Washington

Seattle, Washington

Seattle is the county seat of King County, Washington. With 608,660 residents as of the 2010 Census, Seattle is the largest city in the Northwestern United States. The Seattle metropolitan area of about 3.4 million inhabitants is the 15th largest metropolitan area in the country...

; and Portland

Portland, Oregon

Portland is a city located in the Pacific Northwest, near the confluence of the Willamette and Columbia rivers in the U.S. state of Oregon. As of the 2010 Census, it had a population of 583,776, making it the 29th most populous city in the United States...

 and Astoria, Oregon

Astoria, Oregon

Astoria is the county seat of Clatsop County, Oregon, United States. Situated near the mouth of the Columbia River, the city was named after the American investor John Jacob Astor. His American Fur Company founded Fort Astoria at the site in 1811...

. Koka continued her coastal towing out of San Diego for the 11th Naval District into 1967.