USS R-22 (SS-99)

USS R-22 (SS-99) was an R-class coastal and harbor defense submarine of the United States Navy. Her keel was laid down on 19 April 1917 by the Lake Torpedo Boat Company in Bridgeport, Connecticut; the R-boats built by Lake Torpedo Boat (R-21 through R-27) are sometimes considered a separate class from those built by Fore River Shipbuilding (R-1 through R-14) and Union Iron Works (R-15 through R-20). She was launched on 23 September 1918 sponsored by Mrs. Erie A. Eklund, and commissioned on 1 August 1919 with Lieutenant Commander Walter S. Hass in command.

Service history
Following commissioning, R-22 operated in the New London, Connecticut-Newport, Rhode Island area for two months. On 1 November, she headed south for Coco Solo in the Panama Canal Zone, her homeport. Given hull classification symbol SS-99 in July 1920, she was based in the Canal Zone with Submarine Division 1 through that year. The following year she was transferred back to New London for duty with Submarine Division 0, an experimental division. She was based at New London for the rest of her active service returning to Panama only for the 1923 Fleet Problem. Ordered inactivated in 1924, she was towed to Philadelphia, Pennsylvania, in November and decommissioned there 29 April 1925. Five years later 9 May 1930, she was struck from the Naval Vessel Register. She was sold for scrapping in July of the same year.