USS Osterhaus (DE-164) was a 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...

. She served in the Pacific Ocean

Pacific Ocean

The Pacific Ocean is the largest of the Earth's oceanic divisions. It extends from the Arctic in the north to the Southern Ocean in the south, bounded by Asia and Australia in the west, and the Americas in the east.At 165.2 million square kilometres in area, this largest division of the World...

 and provided escort service against submarine

Submarine

A submarine is a watercraft capable of independent operation below the surface of the water. It differs from a submersible, which has more limited underwater capability...

 and air attack for Navy vessels and convoys. At war's end, she returned Stateside proudly with three battle stars.

Osterhaus, named in honor of Hugo Osterhaus

Hugo Osterhaus

Hugo Osterhaus was a Rear Admiral in the United States Navy. He was the son of Civil War Major General Peter J. Osterhaus and father of Navy Admiral Hugo Wilson Osterhaus , and is buried on Arlington National Cemetery.-U.S...

, winner of the Navy Cross

Navy Cross

The Navy Cross is the highest decoration that may be bestowed by the Department of the Navy and the second highest decoration given for valor. It is normally only awarded to members of the United States Navy, United States Marine Corps and United States Coast Guard, but can be awarded to all...

, was laid down on 11 November 1942 by the Federal Shipbuilding and Dry Dock Co., Port Newark, New Jersey

Newark, New Jersey

Newark is the largest city in the American state of New Jersey, and the seat of Essex County. As of the 2010 United States Census, Newark had a population of 277,140, maintaining its status as the largest municipality in New Jersey. It is the 68th largest city in the U.S...

; launched on 18 April 1943 sponsored by Miss Helen Osterhaus; and commissioned on 12 June 1943, Comdr. Rowland H. Groff, USNR, in command.

World War II Pacific Theatre operations

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...

 training out of Port Royal, Great Sound, Bermuda

Great Sound, Bermuda

The Great Sound is a body of water shaped by the islands of Bermuda. It dominates the southwest of the island chain, and forms a natural harbour. It is surrounded on all sides by the islands, except for the northeast, where it is open to the Atlantic Ocean....

, Osterhaus departed New York

New York

New York is a state in the Northeastern region of the United States. It is the nation's third most populous state. New York is bordered by New Jersey and Pennsylvania to the south, and by Connecticut, Massachusetts and Vermont to the east...

 on 21 August 1943 for Espiritu Santo

Espiritu Santo

Espiritu Santo is the largest island in the nation of Vanuatu, with an area of . It belongs to the archipelago of the New Hebrides in the Pacific region of Melanesia. It is in the Sanma Province of Vanuatu....

, New Hebrides

New Hebrides

New Hebrides was the colonial name for an island group in the South Pacific that now forms the nation of Vanuatu. The New Hebrides were colonized by both the British and French in the 18th century shortly after Captain James Cook visited the islands...

 Islands. Departing on 3 October she made repeated escort missions from the New Hebrides and New Caledonia

New Caledonia

New Caledonia is a special collectivity of France located in the southwest Pacific Ocean, east of Australia and about from Metropolitan France. The archipelago, part of the Melanesia subregion, includes the main island of Grande Terre, the Loyalty Islands, the Belep archipelago, the Isle of...

 advanced bases to the various fighting fronts of the Solomons

Solomon Islands

Solomon Islands is a sovereign state in Oceania, east of Papua New Guinea, consisting of nearly one thousand islands. It covers a land mass of . The capital, Honiara, is located on the island of Guadalcanal...

.

Japanese air attacks at Guadalcanal

As Osterhaus patrolled off the beach at Kola Point, Guadalcanal

Guadalcanal

Guadalcanal is a tropical island in the South-Western Pacific. The largest island in the Solomons, it was discovered by the Spanish expedition of Alvaro de Mendaña in 1568...

, in the early morning darkness of 11 October, two Japanese planes came in low from the beach for a sneak attack that resulted in damaging torpedo

Torpedo

The modern torpedo is a self-propelled missile weapon with an explosive warhead, launched above or below the water surface, propelled underwater towards a target, and designed to detonate either on contact with it or in proximity to it.The term torpedo was originally employed for...

 hits on the and . The latter ship burst into flames and was closed by and Osterhaus. For the next two days the two destroyer escorts sent fire and rescue parties on board the merchant ship, finally succeeding in quelling the flames and salvaging ammunition

Ammunition

Ammunition is a generic term derived from the French language la munition which embraced all material used for war , but which in time came to refer specifically to gunpowder and artillery. The collective term for all types of ammunition is munitions...

, ordnance equipment and engineering tools.

In the following months, Osterhaus escorted troop and supply ships from advanced bases to Guadalcanal and Bougainville Island

Bougainville Island

Bougainville Island is the main island of the Autonomous Region of Bougainville of Papua New Guinea. This region is also known as Bougainville Province or the North Solomons. The population of the province is 175,160 , which includes the adjacent island of Buka and assorted outlying islands...

 in the Solomons with intervals of anti-submarine sector patrols that took her as far from Guadalcanal as the Fiji Islands. After amphibious warfare

Amphibious warfare

Amphibious warfare is the use of naval firepower, logistics and strategy to project military power ashore. In previous eras it stood as the primary method of delivering troops to non-contiguous enemy-held terrain...

 landing rehearsals in preparation for the invasion assaults on the Marianas Islands, Osterhaus set course from Guadalcanal on 12 June 1944 as a part of the screen for transports carrying garrison troops to Eniwetok in the Marshall Islands

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...

. Arriving on 18 June, she passed out to sea the following day for a logistic support area to the east of 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...

 where she found no sign of enemy submarine activity as she guarded oilers and other logistic ships replenishing the American invasion fleet.

On 23 July Osterhaus departed Eniwetok in the screen of a troop convoy

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, though it may also be used in a non-military sense, for example when driving through remote areas.-Age of Sail:Naval...

 that landed troops on 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...

 from the sea on 29 July. The following day the transports entered Agat Bay

Agat, Guam

Agat is a village on the island of Guam, an unincorporated territory of the United States. It is located south of Apra Harbor on the island's western shore. The village's population has decreased since the island's 2000 census....

 where Osterhaus witnessed concentrated dive and level bombing by American aircraft on Orote Peninsula and the effective heavy shelling by U. S. warships. On the evening of 30 July she sailed with her Escort Division Eleven to safeguard a task unit of transports returning to Eniwetok.

Supporting invasion efforts

Osterhaus departed Eniwetok on 20 August to base her operations from Seeadler Harbor

Seeadler Harbor

Seeadler Harbor, also known as Port Seeadler, is located on Manus Island, Admiralty Islands, Papua New Guinea and played an important role in World War II...

, Manus

Manus Island

Manus Island is part of Manus Province in northern Papua New Guinea and is the largest island of the Admiralty Islands. It is the fifth largest island in Papua New Guinea with an area of 2,100 km², measuring around 100 km × 30 km. According to the 2000 census, Manus Island had a...

, Admiralty Islands

Admiralty Islands

The Admiralty Islands are a group of eighteen islands in the Bismarck Archipelago, to the north of New Guinea in the south Pacific Ocean. These are also sometimes called the Manus Islands, after the largest island. These rainforest-covered islands form part of Manus Province, the smallest and...

. The flagship

Flagship

A flagship is a vessel used by the commanding officer of a group of naval ships, reflecting the custom of its commander, characteristically a flag officer, flying a distinguishing flag...

 of Escort Division Eleven, she departed Manus on 6 September to help guard three escort carriers and a number of fleet oilers to ocean rendezvous with the Fast Carrier Task Forces. The logistic area was reached on 11 September and the escort carriers transferred replacement aircraft and aircraft parts to the heavy attack aircraft carriers while fleet oilers and other logistic ships replenished the Fast Carrier Striking Force preparing for the liberation of the Western Caroline

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 Philippine Islands.

Stateside overhaul

The duty of protecting logistic ships operating from Seeadler Harbor in support of the Philippine Campaign continued until 20 November when Osterhaus left that port astern for the Hawaiian Islands

Hawaiian Islands

The Hawaiian Islands are an archipelago of eight major islands, several atolls, numerous smaller islets, and undersea seamounts in the North Pacific Ocean, extending some 1,500 miles from the island of Hawaii in the south to northernmost Kure Atoll...

 and the west coast of the United States. She arrived in 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...

 on 13 December for overhaul in the Terminal Island Shipyard

Long Beach Naval Shipyard

thumb|right|300px|Long Beach Naval Shipyard in 1993The Long Beach Naval Shipyard, which closed in 1997, was located at Terminal Island between the city of Long Beach and the San Pedro district of Los Angeles and approximately 23 miles south of the Los Angeles International Airport.The Long Beach...

, San Pedro, California.

Osterhaus returned to 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...

 on 23 April 1945 and assisted in guarding a convoy of transports and merchant ships bound by way of the Marshall Islands to 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...

, Caroline Islands. She reached Ulithi with the transports on 9 June and spent the remainder of the war in escort duty between that island, the 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...

, and the Marshalls. She departed Kwajalein

Kwajalein

Kwajalein Atoll , is part of the Republic of the Marshall Islands . The southernmost and largest island in the atoll is named Kwajalein Island. English-speaking residents of the U.S...

 Lagoon

Lagoon

A lagoon is a body of shallow sea water or brackish water separated from the sea by some form of barrier. The EU's habitat directive defines lagoons as "expanses of shallow coastal salt water, of varying salinity or water volume, wholly or partially separated from the sea by sand banks or shingle,...

 on 16 September bound with Escort Division Eleven for Pearl Harbor, San Diego, the Panama Canal

Panama Canal

The Panama Canal is a ship canal in Panama that joins the Atlantic Ocean and the Pacific Ocean and is a key conduit for international maritime trade. Built from 1904 to 1914, the canal has seen annual traffic rise from about 1,000 ships early on to 14,702 vessels measuring a total of 309.6...

, and New York City where she received Navy Day

Navy Day

Several nations observe or have observed a Navy Day to recognize their navy. The term is also used in Britain to mean an open day at a dockyard such as HMNB Portsmouth, when the public can visit military ships and see air displays, roughly along the lines of an American Fleet Week .- Argentina...

 visitors on 27 October.

Post-War decommissioning

Osterhaus arrived in Jacksonville, Florida

Jacksonville, Florida

Jacksonville is the largest city in the U.S. state of Florida in terms of both population and land area, and the largest city by area in the contiguous United States. It is the county seat of Duval County, with which the city government consolidated in 1968...

, on 29 November, shifting the following day to Green Cove Springs Anchorage for inactivation. She was decommissioned there on 26 June 1946 and remained in reserve status until she was sold on 30 May 1974 and scrapped.