HMAS Sirius (O 266)
HMAS Sirius in March 2009
|Namesake:||HMS Sirius of the First Fleet|
|Builder:||Hyundai Mipo Dockyard|
|Launched:||12 April 2004|
|Acquired:||3 June 2004|
|Commissioned:||16 September 2006|
|Renamed:||MT Delos (during construction)|
|Motto:||To Serve and Provide|
|Status:||Active as of 2013|
|Type:||Fleet Replenishment Vessel|
|Displacement:||46,755 tonnes (full load)|
|Length:||191.3 m (628 ft)|
|Beam:||32 m (105 ft)|
|Draught:||11 m (36 ft)|
|Propulsion:||1 x Hyundai B&W6S50MC (11,640 bhp x 127 rpm), 1 x direct drive shaft|
|Speed:||16 knots (30 km/h; 18 mph)|
|Capacity:||34,806 cubic metres of fuel|
|Aviation facilities:||Helicopter deck, no hangar facilities|
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 HMAS Westralia. 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. 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. Delos was converted to her new role at Fremantle by Tenix Defence, and was commissioned into the RAN on 16 September 2006. Sirius is expected to remain in service for approximately 15 years.
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 a saving of half the acquisition project's cost.
Operational history 
In October 2006, Sirius successfully undertook her first Replenishment at Sea; transferring fuel and water supplies to HMAS Toowoomba. The ship completed working up and passed her first Unit Readiness Evaluation on 12 December 2006. RAN reports show that although Sirius has the ability to have helicopters land on her deck, Sirius has yet to pass the stability test that allow a helicopter to land on its deck.
On the morning of 13 March 2009, Sirius was one of seventeen warships involved in a ceremonial fleet entry and fleet review in Sydney Harbour, the largest collection of RAN ships since the Australian Bicentenary in 1988. Sirius did not participate in the fleet entry, but was anchored in the harbour for the review.
Sirius was forced to turn back en route to the RIMPAC 2010 exercise in Hawaii due to problems with her engine room and did not participate in the exercise as a result.
The ship is predicted to remain in service until the early 2020s.
- "HMAS Sirius". Royal Australian Navy. Retrieved 29 December 2012.
- Gillett, Australia's Navy, Part 2, p. 50
- Australian Associated Press (26 February 2008). "Defence told to find millions in savings". Archived from the original on 28 February 2008. Retrieved 27 February 2008.
- Brooke, Michael (2 April 2009). "Marching into History". Navy News (Department of Defence).
- Dodd, Mark (6 August 2010). "No-show by subs slammed". The Australian. Retrieved 14 August 2010.
- Gillett, Australia's Navy, Part 2, p. 51
- Gillett, Ross (2012). Australia's Navy: Today and Tomorrow. Part 2. Topmill. p. 50.
- Defence Materiel Organisation Maritime Operations Support Capability
- Australian National Audit Office Purchase, Chartering and Modification of the New Fleet Oiler
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