USS R-8 (SS-85)

R-8 fitted out at Boston, Massachusetts, during the fall of 1919, proceeded to New London, Connecticut on 5 December, joined other boats of Submarine Division 9 (SubDiv 9), and continued south for winter exercises in the Gulf of Mexico. She operated out of Pensacola, Florida, until returning to New England in April. Given hull classification symbol "SS-85" in July, she departed Newport, Rhode Island on 13 September and two days later arrived at Norfolk for overhaul prior to transfer to the Pacific Fleet. Sea trials in early April 1921 followed, and on 21 April she headed south. Transiting the Panama Canal in May, she arrived at San Pedro, California, her new homeport on 30 June, and for the next two years conducted exercises — individual, divisional and fleet — off the coasts of California and Mexico.

On 16 July 1923, R-8 sailed west for Pearl Harbor, her base for almost eight years — during which she engaged in training and operations with fleet units. In late October 1925, she collided with the minesweeper USS Widgeon (AM-22), suffering the loss of her periscopes, the destruction of her bridge, and damage to her radio antenna supports. In August 1927, she searched for missing Dole Air Race aviators.

Ordered back to the East Coast for inactivation in 1930, R-8 departed Pearl Harbor on 12 December, transited the Panama Canal in mid-January 1931, and arrived at Philadelphia, Pennsylvania, on 9 February. Decommissioned on 2 May, she was berthed at Philadelphia as a unit of the Reserve Fleet until 1936. On 26 February of that year, while still in a state of preservation, she sank. Later raised, she was struck from the Naval Vessel Register on 12 May 1936 and on 19 August she was used as a target vessel for an aerial bombing test. Four near-misses with 100 lb (45 kg) bombs sank her 71 mi (114 km) off Cape Henry, Virginia.