HMAS Mallina was a cargo vessel constructed by Harland & Wolff in Belfast in 1909, originally built for the Australian United Steam Navigation Company. She measured approximately 330.5 feet (100.74 meters) in length, with a beam of 44.3 feet (13.50 meters), a depth of 23.3 feet (7.10 meters), and a draught of 26.1 feet (7.96 meters). Powered by a quadruple expansion steam engine built by her builders, she was capable of reaching speeds up to 13.5 knots (25 km/h), with trial speeds reaching 16.5 knots (30.6 km/h). Her engine featured cylinders of varying diameters, and she was operated with a single screw propeller. In her early service, she carried a crew of 37. Launched on 25 March 1909 (yard number 407), Mallina was completed on 29 April 1909 at a cost of £70,000. She initially served on the Rockhampton to Sydney route, becoming the longest vessel operating in that service at the time. Her early career included a notable grounding off Haggerston Island in June 1909, which was later remedied, and a collision in Brisbane River in January 1910. During World War I, she was requisitioned by the Royal Australian Navy in 1914, serving as a store carrier and collier named HMAS Mallina. She played a role in supporting Australian and British naval operations, including the occupation of German New Guinea and patrolling the Pacific. She was decommissioned in 1915 and returned to her owners. In 1935, she was sold to Japanese companies, renamed Seiko Maru, and later Siberia Maru, serving primarily as a cargo liner. She was requisitioned again during WWII, converted into a hospital ship, and later a troopship and transport vessel. Her maritime significance culminated during her final voyage in September 1944, when she was part of a Japanese convoy in the Philippines. On 24 September 1944, Siberia Maru was attacked by American aircraft in the Sulu Sea. She was bombed, set afire, and sank with the loss of 158 lives out of 2,382 on board. Her wreck was salvaged in mid-1945, marking the end of her service life.

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