USS John M. Howard (IX-75), an unclassified miscellaneous vessel

Unclassified miscellaneous vessel

The IX hull classification symbol is used for ships of the United States Navy that do not fit into one of the standard categories...

, was the only ship of 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...

 to be named for John Martin Howard

John Martin Howard

John Martin Howard was born in Chester, Pennsylvania, and enlisted in the United States Naval Reserve on 22 June 1935. After training duty 1940-1941 at the Naval Reserve Midshipman's School, Howard was appointed Ensign 28 February 1941...

. Her keel was laid down in Camden, New Jersey

Camden, New Jersey

The city of Camden is the county seat of Camden County, New Jersey. It is located across the Delaware River from Philadelphia, Pennsylvania. As of the 2010 United States Census, the city had a total population of 77,344...

, in 1934 as Elsie Fenimore, and purchased from her owner, E. R. Fenimore Johnson, on 2 July 1942. She was placed in service at Philadelphia, Pennsylvania

Philadelphia, Pennsylvania

Philadelphia is the largest city in the Commonwealth of Pennsylvania and the county seat of Philadelphia County, with which it is coterminous. The city is located in the Northeastern United States along the Delaware and Schuylkill rivers. It is the fifth-most-populous city in the United States,...

, on 29 July. Taken to Washington, DC, and renamed John M. Howard on 17 August 1942, she commissioned

Ship commissioning

Ship commissioning is the act or ceremony of placing a ship in active service, and may be regarded as a particular application of the general concepts and practices of project commissioning. The term is most commonly applied to the placing of a warship in active duty with its country's military...

 there 1 September 1942.

During the war the ship was used for ordnance experiments, operating out of Naval Ordnance Laboratory

Naval Ordnance Laboratory

The Naval Ordnance Laboratory , now disestablished, formerly located in White Oak, Maryland was the site of considerable work that had practical impact upon world technology. The White Oak site of NOL has now been taken over by the Food and Drug Administration.-History:The U.S...

, Washington, DC, to 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...

 and various Atlantic coast ports. She decommissioned

Ship decommissioning

To decommission a ship is to terminate her career in service in the armed forces of her nation. A somber occasion, it has little of the elaborate ceremony of ship commissioning, but carries significant tradition....

 on 9 May 1945 at the Washington Navy Yard

Washington Navy Yard

The Washington Navy Yard is the former shipyard and ordnance plant of the United States Navy in Southeast Washington, D.C. It is the oldest shore establishment of the U.S. Navy...

 and was placed in service until 16 November 1945. She was returned to the Maritime Commission for disposal 24 January 1946.