USS Pentheus (ARL-20) was one of 39 Achelous-class

Achelous class repair ship

The Achelous class repair ship was a class of ship built by the US Navy during World War II.As the US gained experience in amphibious operations, it was realized that some sort of mobile repair facility would be useful for repairing the damage that frequently occurred to smaller vessels such as...

 landing craft

Landing craft

Landing craft are boats and seagoing vessels used to convey a landing force from the sea to the shore during an amphibious assault. Most renowned are those used to storm the beaches of Normandy, the Mediterranean, and many Pacific islands during WWII...

 repair ships built for the United States Navy

United States Navy

The United States Navy is the naval warfare service branch of the United States Armed Forces and one of the seven uniformed services of the United States. The U.S. Navy is the largest in the world; its battle fleet tonnage is greater than that of the next 13 largest navies combined. The U.S...

 during World War II

World War II

World War II, or the Second World War , was a global conflict lasting from 1939 to 1945, involving most of the world's nations—including all of the great powers—eventually forming two opposing military alliances: the Allies and the Axis...

. Named for Pentheus

Pentheus

In Greek mythology, Pentheus was a king of Thebes, son of the strongest of the Spartes, Echion, and of Agave, daughter of Cadmus, the founder of Thebes, and the goddess Harmonia....

 (a king of Thebes

Thebes, Greece

Thebes is a city in Greece, situated to the north of the Cithaeron range, which divides Boeotia from Attica, and on the southern edge of the Boeotian plain. It played an important role in Greek myth, as the site of the stories of Cadmus, Oedipus, Dionysus and others...

, according to Greek legend

Greek mythology

Greek mythology is the body of myths and legends belonging to the ancient Greeks, concerning their gods and heroes, the nature of the world, and the origins and significance of their own cult and ritual practices. They were a part of religion in ancient Greece...

), she was the only U.S. Naval vessel to bear the name.

Originally laid down as LST–1115 by the Chicago Bridge and Iron Company of Seneca, Illinois

Seneca, Illinois

Seneca is a village in LaSalle and Grundy counties in the U.S. state of Illinois. The population was 2,371 at the 2010 census.The LaSalle County portion of Seneca is part of the Ottawa–Streator Micropolitan Statistical Area, while the small portion that lies in Grundy County is part of the...

 on 29 September 1944; launched 22 December 1944; and placed in reduced commission 4 January 1945. Proceeding to Baltimore, Maryland, she decommissioned 6 February 1945; underwent conversion; and was commissioned in full as USS Pentheus (ARL–20) 7 June 1945 with Lieutenant Mason E. Brock, USNR, in command.

Service history

Following shakedown in Chesapeake Bay

Chesapeake Bay

The Chesapeake Bay is the largest estuary in the United States. It lies off the Atlantic Ocean, surrounded by Maryland and Virginia. The Chesapeake Bay's drainage basin covers in the District of Columbia and parts of six states: New York, Pennsylvania, Delaware, Maryland, Virginia, and West...

, Pentheus took on pontoons

Pontoon (boat)

A pontoon is a flotation device with buoyancy sufficient to float itself as well as a heavy load. A pontoon boat is a flattish boat that relies on pontoons to float. Pontoons may be used on boats, rafts, barges, docks, floatplanes or seaplanes. Pontoons may support a platform, creating a raft. A...

 at Providence, Rhode Island

Providence, Rhode Island

Providence is the capital and most populous city of Rhode Island and was one of the first cities established in the United States. Located in Providence County, it is the third largest city in the New England region...

, and on 15 July got underway for the Canal Zone

Panama Canal Zone

The Panama Canal Zone was a unorganized U.S. territory located within the Republic of Panama, consisting of the Panama Canal and an area generally extending 5 miles on each side of the centerline, but excluding Panama City and Colón, which otherwise would have been partly within the limits of...

. Crossing into the Pacific 26 July, she steamed on to Subic Bay

Subic Bay

Subic Bay is a bay forming part of Luzon Sea on the west coast of the island of Luzon in Zambales, Philippines, about 100 kilometers northwest of Manila Bay. Its shores were formerly the site of a major United States Navy facility named U.S...

, Philippines

Philippines

The Philippines , officially known as the Republic of the Philippines , is a country in Southeast Asia in the western Pacific Ocean. To its north across the Luzon Strait lies Taiwan. West across the South China Sea sits Vietnam...

. Arriving 17 October, she engaged in repair work there until sailing for 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...

 5 January 1946. From Pearl Harbor, she steamed to Johnston Island for two weeks duty prior to getting underway for Green Cove Springs, Florida

Green Cove Springs, Florida

Green Cove Springs is a city in Clay County, Florida, United States. The population was 5,378 at the 2000 census. As of 2010, the population recorded by the U.S. Census Bureau is 6,908. It is the county seat of Clay County....

 and inactivation.

Arriving 20 April she decommissioned and joined the Atlantic Reserve Fleet, where she remained until struck from the Naval Vessel Register

Naval Vessel Register

The Naval Vessel Register is the official inventory of ships and service craft in custody of or titled by the United States Navy. It contains information on ships and service craft that make up the official inventory of the Navy from the time a vessel is authorized through its life cycle and...

 1 January 1960. She was sold on 13 June 1960 to Ships, Inc. of Florida

Florida

Florida is a state in the southeastern United States, located on the nation's Atlantic and Gulf coasts. It is bordered to the west by the Gulf of Mexico, to the north by Alabama and Georgia and to the east by the Atlantic Ocean. With a population of 18,801,310 as measured by the 2010 census, it...

. Her final fate is unknown.