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HMAS Sirius (O 266)
HMAS ''Sirius'' (O 266) (formerly MT ''Delos'') is a commercial tanker purchased by the Royal Australian Navy and converted into a fleet replenishment vessel to replace . Launched in South Korea on 2004, and converted in Western Australia, ''Sirius'' was commissioned in 2006; three years before a purpose-built vessel would have, and at half the cost. The tanker is expected to remain in service until the 2020s.
==Construction and acquisition==
''Delos'' was built at Hyundai Mipo Dockyard in South Korea.〔(【引用サイトリンク】title=HMAS Sirius )〕 Another five ships were built to the same design, all for civilian service.〔 She was launched on 12 April 2004, and was purchased by the Australian Government on 3 June 2004, with the intention of modifying her as a replacement for .〔〔Saunders (ed.), ''IHS Jane's Fighting Ships 2012–2013'', p. 35〕 ''Delos'' was leased for operation as an oil tanker until September 2005, then was taken up by Tenix Defence (which had been awarded the A$60 million conversion contract on 15 March 2005) for conversion into a replenishment vessel, which was completed 5 weeks ahead of schedule.〔〔 ''Sirius'' was commissioned into the RAN on 16 September 2006, in a ceremony that included ''Westralia''s decommissioning. While HMAS ''Sirius'' is the first ship of this name to serve as part of the RAN, she is named after , the flagship of the First Fleet of British convicts sent to Australia in 1788.〔
''Sirius'' has a full load displacement of 46,775 tonnes, is in length, with a beam of and a draught of .〔 Propulsion machinery consists of a single propeller shaft driven by a single Hyundai B&W 6S 50MC diesel, supplemented by a bow thruster.〔 Top speed is , and the ship has a range of at .〔 ''Sirius'' can carry up to of fuel, including of helicopter aviation fuel, plus 240 tonnes of dry stores carried in a container deck designed for twelve intermodal containers.〔〔〔 Modifications by Tenix included the fitting of two replenishment points (one on each side, allowing the underway replenishment of two ships simultaneously), installation of a helicopter deck aft of the superstructure, fitting of the container deck, addition of two 70-man lifeboats and two RHIBs (the latter sourced from ''Westralia''), and modification of the internal layout and equipment to bring it to naval standards.〔〔 ''Sirius'' is armed with five 12.7 mm machine guns for self-defence.〔 The ship's company includes 8 officers and 46 sailors.〔
Originally, the RAN planned to have a ship specially constructed for the role. The decision to instead purchase an under-construction civilian tanker and modify her for military service allowed ''Sirius'' to enter service three years before originally planned, at at half the acquisition project's planned cost.〔
抄文引用元・出典: フリー百科事典『 ウィキペディア（Wikipedia）』
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