USS L-10 (SS-50) was an L-class submarine of the United States Navy.
USS L-10 off Provincetown, Massachusetts, on 24 May 1916.
L-class submarines USS L-3, USS L-11, USS L-10, USS L-4, and USS L-9 alongside their submarine tender in British waters in 1918. The "A" (for "American") was added to avoid confusion with British L-class submarines.
United States L-class submarine
The United States L-class submarines were a class of 11 coastal defense submarines built 1914–1917, and were the most modern and capable submarines available to United States Navy when the country entered World War I. Despite being considered a successful design by the USN, war experience in European waters demonstrated that the boats lacked the range, speed, and endurance to conduct extended patrols in the North Atlantic.
USS L-1 (SS-40) lead ship of her class during running trials.
L-8 acting as a target for torpedo testing off Newport Rhode Island May 26,1926. This was obviously a miss. Another shot later that day sank her.