Pelias (AS-14) was laid down as SS Mormacyork under Maritime Commission contract by Sun Shipbuilding and Dry Dock Co., Chester, Pa., 8 May 1939, launched 14 November 1939; sponsored by Miss Barbara W. Vickery; and delivered to Moore-McCormick Steam ship Co., 1 April 1940. Mormacyork served for a short time on passenger service between ports in the United States and South America. Acquired by the Navy late in 1940, she was renamed Pelias 9 January 1941 and converted for Navy use as a submarine tender by Bethlehem Steel Co., Brooklkn, N.Y. Pelias commissioned at New York 5 September 1941, Comdr. William Wakefield in command.
Following shakedown off New England, Pelias sailed for the Pacific 9 October. Steaming via San Diego, Calif., she arrived Pearl Harbor 21 November. Six days later she began sub overhauls at the Submarine Base where she was berthed during the Japa nese attack 7 December 1941. During the sneak attack her guns splashed one enemy torpedo plane, and damaged a second, as they made their deadly runs along the main channel little more than 100 yards from her port side. She resumed repair duty shortly after the attack and during the early months of the war provided valuable assistance as the Pacific Fleet prepared for the long struggle for supremacy of the Pacific.
After servicing almost a score of submarines at Peaxl Harbor, Pelias steamed to San Francisco late in May 1942 and took on spare parts, provisions, and ammunition. Departing for the Southwest Pacific 22 June, she touched at Melbourne, Australia, 16 July and reached Albany, Australia, the 23d. Assigned to duty under Rear Admiral @ckwood, ComSubSoWesPac, she refitted 10 submarines at Albany before shifting her base to Fremantle, Australia, 27 October. There, she relieved Holland as mother ship for the SoWesPac submarines, which pressed the attack against Japanese naval and merchant shipping. Except for brief deployments to Exmouth Gulf in May 1943 and to Albani in March 1944, Pelias operated out of Fremantle during her Australian employment. Between J uly 1942 and May 1944 she overhauled, repaired, and refitted 59 submarines of Submarine Squadrons 6, 12, and 16.
Ordered home in May 1944, she departed Fremantle 15 May, touched at Pearl Har6or 6 June and reached San Francisco the 15th. For more than two months she underwent overhaul at Mare Island; thence, from 10 to 18 September, she steamed to Hawaii. Engine repairs delayed her deployment to Midway but they did not hinder her sub-tending duties. She refitted 7 subs before sailing to Midway 9 January 1945. Assigned to Submarine Squadron 32, Pelias completed 15 sub refits and voyage repairs during the next four months. Between 26 May and 10 June she steamed via Pearl to San Diego where she undertook the repair and decommissioning overhaul of the S class submarines of Submarine Squadron 45.
Based at San Diego when hostilities ended 15 August, Pelias steamed to Tiburon Bay 10 September, thence to Mare Island 24 February 1946. She was placed in commission in reserve 6 September 1946, and in service in reserve 1 February 1947. On 21 March 1950 she was placed out of service in reserve but later performed berthing ship duty at Mare Island until she decommissioned 14 June 1970. Pelias received one battle star for World War 11 service.