USS R-11

R-11 remained inactive at Boston, Massachusetts, with a crew of only two men for two months following commissioning. Then, with the new year 1920, she commenced training cruises along the New England coast and, in April, to Bermuda. On completion of training cruises, she returned to New London, Connecticut, whence she sailed on May 31 for the Pacific. Given hull classification symbol SS-88 in July, she arrived at Pearl Harbor on August 4. Homeported there for the next ten years, she conducted operations in the Hawaiian area, searched for missing ships, including the seagoing tug Conestoga (AT-54), and planes; participated in tactical exercises; and engaged in fleet maneuvers.

On December 12, 1930, the R-boat departed Pearl Harbor for the last time and steamed east to San Diego, California, whence she continued on through the Panama Canal, to New London. She returned to that Thames River base February 9, 1931 and for the remainder of the decade served as a training ship primarily for the Submarine School at New London and occasionally for NROTC units in the southern New England area. Transferred to Key West, Florida, on June 1, 1941, R-11 continued her training ship duties throughout the remainder of her career.

Decommissioned September 5, 1945, R-11 was struck from the Naval Vessel Register on October 11, 1945; sold to Macey O. Smith Miami, Florida, March 13, 1946; and scrapped in 1948.