USS S-12 (SS-117) was a second-group (S-3 or "Government") S-class submarine

United States S class submarine

The United States' S-class submarines, often simply called S-boats , were the first class of submarines built to a United States Navy design....

 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...

. Her keel was laid down on 8 January 1920 by the Portsmouth Navy Yard. She was launched

Ship naming and launching

The ceremonies involved in naming and launching naval ships are based in traditions thousands of years old.-Methods of launch:There are three principal methods of conveying a new ship from building site to water, only two of which are called "launching." The oldest, most familiar, and most widely...

 on 4 August 1921 sponsored by Mrs. Gordon Woodbury and 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...

 on 30 April 1923 with Lieutenant Francis S. Low in command.

Following duty along the northeast coast in 1923 and a visit to Guantanamo, Cuba

Cuba

The Republic of Cuba is an island nation in the Caribbean. The nation of Cuba consists of the main island of Cuba, the Isla de la Juventud, and several archipelagos. Havana is the largest city in Cuba and the country's capital. Santiago de Cuba is the second largest city...

, from 19 April to 24 April 1924, S-12 resumed duty in New England

New England

New England is a region in the northeastern corner of the United States consisting of the six states of Maine, New Hampshire, Vermont, Massachusetts, Rhode Island, and Connecticut...

 waters. Sailing from New London, Connecticut

New London, Connecticut

New London is a seaport city and a port of entry on the northeast coast of the United States.It is located at the mouth of the Thames River in New London County, southeastern Connecticut....

, on 15 November 1924, via 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 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...

, she visited Hawaii

Hawaii

Hawaii is the newest of the 50 U.S. states , and is the only U.S. state made up entirely of islands. It is the northernmost island group in Polynesia, occupying most of an archipelago in the central Pacific Ocean, southwest of the continental United States, southeast of Japan, and northeast of...

 from 24 April to 25 May 1925, before returning to New London on 12 July. In addition to service in the northeast through 1928, S-12 operated in the Panama Canal area from January through April 1926; visited Kingston, Jamaica

Kingston, Jamaica

Kingston is the capital and largest city of Jamaica, located on the southeastern coast of the island. It faces a natural harbour protected by the Palisadoes, a long sand spit which connects the town of Port Royal and the Norman Manley International Airport to the rest of the island...

, from 20 March to 28 March 1927; and served again in the Panama Canal area from February into April 1928. From 1929 into 1936, S-12 served almost exclusively in the Panama Canal area although she visited Baltimore, Maryland, from 15 May to 5 June 1933, and New London from 15 May to 1 June 1935. Departing Coco Solo

Coco Solo

Coco Solo was a United States Navy submarine base established in 1918 on the Atlantic Ocean side of the Panama Canal Zone, near Colón, Panama....

 on 13 June 1936, S-12 decommissioned 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 30 September 1936.

S-12 was recommissioned on 4 November 1940. Following voyages to Bermuda

Bermuda

Bermuda is a British overseas territory in the North Atlantic Ocean. Located off the east coast of the United States, its nearest landmass is Cape Hatteras, North Carolina, about to the west-northwest. It is about south of Halifax, Nova Scotia, Canada, and northeast of Miami, Florida...

, Saint Thomas, United States Virgin Islands, and Coco Solo, S-12 operated at St. Thomas from December 1941 into March 1942; in the Panama Canal area from April into June; at Guantánamo from June into December; in the Panama Canal area from that month into May 1944; at Trinidad

Trinidad

Trinidad is the larger and more populous of the two major islands and numerous landforms which make up the island nation of Trinidad and Tobago. It is the southernmost island in the Caribbean and lies just off the northeastern coast of Venezuela. With an area of it is also the fifth largest in...

 from May into July; and at Guantánamo from July into 1945. Departing from Guantánamo on 25 March, S-12 was decommissioned on 18 May 1945 at Philadelphia, and was 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...

. She was sold on 28 October that year to Rosoff Brothers of New York City

New York City

New York is the most populous city in the United States and the center of the New York Metropolitan Area, one of the most populous metropolitan areas in the world. New York exerts a significant impact upon global commerce, finance, media, art, fashion, research, technology, education, and...

. Resold to Northern Metals Company of Philadelphia, on an unspecified date, she was scrapped.