(SS77: dp. 491 (surf.), 566 (subm.); l 175; b. 167; ; dr. 1311; s. 14 k. (surf.), 11 k. (subm.); cpl. 29; a. 1 3, 4 18 tt.; cl. O11).
O16 (SS77) was laid down 7 October 1916 by California Shipbuilding Co., Long Beach, Calif.; launched 9 February 1918; sponsored by Mrs. 1. H. Mayfield; and commissioned 1 August 1918, Lt. W. M. Quigley, in command.
Commissioning during the final months of World War I, O16 had little war-time duty. After the war she reported to Cape May, N.J., where she went into dry-dock 20 September 1919. In October the boat sailed to Philadelphia, where a dangerous fire in her superstructure 29 December, was brought under control before it did major damage.
In 1922, O16 was stationed at Coco Solo, C.Z., for diving tests and maneuvers. She cruised in formation with O12, O14, O15, and Bushnell to Guantanamo Bay, Cuba, 26 January, and continued maneuvers in and around the Virgin Islands. In April she returned to Coco Solo, where electricians and engineers put her in prime condition.
In November 1923, O16 sailed to Philadelphia, where she decommissioned 21 June 1924 and was turned over to the Commandant, Navy Yard, Philadelphia. Struck from the Navy Register 9 May 1930, the boat was scrapped in accordance with the London Naval Treaty 30 July 1930.