HMAS Moresby was a 24-class (Racehorse class) "Fleet Sweeping" sloop constructed during World War I, with a displacement of approximately 1,320 tons and an overall length of 267 feet (81 meters). As built, she was powered by coal-fuelled boilers connected to steam turbines, which provided her with the capability to serve as a minesweeper, anti-submarine vessel, and survey ship. The vessel's design was larger and more spacious than previous classes, but she was known for poor seakeeping abilities. Her crew comprised about 82 personnel. Laid down as HMS Silvio in Glasgow on 27 November 1917 by Barclay Curle, she was launched on 12 April 1918 and commissioned into the Royal Navy on 25 May 1918. During her early service, on 25 July 1918, she participated in convoy escort duties off Ulster, coming under attack by a German U-boat, though the attack was unsuccessful. In 1925, her role shifted when she was converted into a survey ship and lent to the Australian Government to replace HMAS Fantome. Renamed HMAS Moresby after the explorer John Moresby, she arrived in Australia in September 1925. She conducted significant survey operations around the Great Barrier Reef until December 1929, after which she was placed in reserve. Recommissioned in 1933, she undertook strategic surveys in northern Australian waters. Throughout the 1930s, she faced issues related to tropical operational conditions and sailor discipline, culminating in a notable mutiny incident in August 1934, when 27 sailors refused to work in protest, leading to disciplinary actions. She was reconverted from coal to oil burning boilers in 1935 and resumed survey duties until World War II. During the war, Moresby served as an anti-submarine and convoy escort vessel off Australia’s east coast, engaging in operations that saw multiple Japanese submarine attacks, including the sinking of the Yugoslav vessel Recina in April 1943. Reassigned to survey duties in 1943, she participated in the re-occupation of Timor, where she was the vessel aboard which the Japanese surrender was signed on 11 September 1945. Her wartime service earned her two battle honours: "Pacific 1942-43" and "New Guinea 1943-44." Her final years included a second mutiny in October 1945, driven by overcrowding and poor conditions, which resulted in disciplinary measures. She was decommissioned in March 1946, sold for scrapping in 1947, and subsequently broken down into sections at Newcastle Steelworks. The vessel’s long service record highlights her versatility and significant contribution to both maritime survey work and wartime operations.

This description has been generated using GPT-4.1-NANO based on the Vessel's wikidata information and then modified by ShipIndex.org staff.