USS Addison County was an LST-1-class tank landing ship built for the United States Navy during World War II. Named for Addison County, Vermont, she was the only U. S. Naval vessel to bear the name, the new tank landing ship got underway on 29 July for Panama City, Florida where she conducted a series of beaching exercises. LST-31 returned to New Orleans on 7 August to take on cargo for transportation to the Pacific, after a brief port call at Guantanamo Bay, Cuba the vessel transited the Panama Canal on 24 August and joined the Pacific Fleet. She then continued on to San Diego, California where she arrived on 13 September, after participating in beaching exercises in the San Diego area, the ship stopped at Port Hueneme and at San Francisco, California to take on cargo. She left the west coast on 15 October bound for Hawaii, reached Pearl Harbor on the 25th, when this task was completed, LST-31 again weighed anchor on 5 November and shaped a course for the Gilbert Islands. As a member of 5th Amphibious Force, the ship was slated to take part in the assault on Makin Island, LST-31 arrived off Makin on the 20th and began discharging troops and cargo ashore. She remained off that atoll until 3 December, when she got underway to return to Pearl Harbor, shortly after her arrival, the vessel entered the Pearl Harbor Navy Yard for repairs and alterations. While her engines were being overhauled, additional 40-millimeter and 20-millimeter guns were installed, the yard period ended in early January 1944, and the refurbished vessel then took part in training exercises off Maui in preparation for the forthcoming invasion of the Marshall Islands. The tank landing ship left Pearl Harbor on 19 January and set a course for Kwajalein and she anchored off that atoll on 1 February and began discharging her cargo in support of operations in the Marshalls. On 12 February, the ship began embarking troops for the invasion of Eniwetok and, five days later and she beached at Eniwetok on the 20th and began landing her soldiers and discharging cargo ashore. LST-31 remained there until 20 March, when she got underway for Hawaii and she stopped en route at Kwajalein and Tarawa to take on cargo and passengers and finally reached Pearl Harbor on 15 April. Following repairs in drydock there, she resumed operations on 10 May with a series of training exercises in Hapuna Bay, on the 25th, LST-31 left Hawaiian waters, bound for Eniwetok. Upon her arrival at that atoll on 7 June, she refueled, the vessel arrived off Saipan on 14 June and began discharging troops and supplies ashore. She cleared the area on the 23rd and returned to Eniwetok to replenish her cargo, LST-31 arrived back at Saipan on 17 July, unloaded supplies and small craft, and, during the next few weeks, served as a hospital ship. At night, she anchored off Saipan to receive casualties and was underway off Tinian during daylight hours and this assignment occupied the ship through 21 August, when she began a round-trip voyage to Eniwetok. After returning to Saipan, the vessel underwent three days of repairs and got underway on 23 September for the west coast of the United States. En route, she touched at Eniwetok, Apamama and Makin Islands, Gilbert Islands and she left the latter port on 6 November and reached San Francisco on 17 November 1944. After one day in there, LST-31 sailed to San Pedro to enter the West Coast Shipbuilding Company yards for extensive alterations
Image: USS Addison County
LST-31 off-loading over the beach at Okinawa, July 1945.