USS C-2 (SS-13) was one of five C-class submarines built for the United States Navy in the first decade of the 20th century.

[1] For surface running, they were powered by two 240-brake-horsepower (179 kW) Craig gasoline engines, each driving one propeller shaft.

C-2 – assigned to the Atlantic Torpedo Fleet and later the Atlantic Submarine Flotilla – cruised along the East Coast until 20 May 1913, when she cleared Norfolk, Virginia, for six months of operations from Guantánamo Bay, Cuba.

In December, she reported at Cristóbal, Colón, Panama, and began an operating schedule of torpedo practice, exploration of anchorages, and harbor defense duty at ports of the Panama Canal Zone.

The submarine was placed in ordinary at Coco Solo, Canal Zone on 22 August 1919, and was decommissioned on 23 December 1919.