HMAS Yarra (M 87)

Last updated

RAN-IFR 2013 D3 81.JPG
HMAS Yarra in 2013
History
Naval Ensign of Australia.svgAustralia
NameYarra
Namesake Yarra River
BuilderAustralian Defence Industries
Launched19 January 2002
Commissioned1 March 2003
Homeport HMAS Waterhen
Identification MMSI number: 503126000
Motto"Hunt and strike"
Honours and
awards		Five inherited battle honours
StatusActive as of 2016
Badge HMAS yarra crest.png
General characteristics
Class and type Huon-class minehunter
Displacement732 tons at full load
Length52.5 m (172 ft)
Beam9.9 m (32 ft)
Draught3 m (9.8 ft)
Propulsion
Speed
  • 14 knots (26 km/h; 16 mph) on diesel
  • 6 knots (11 km/h; 6.9 mph) on thrusters
Range1,600 nautical miles (3,000 km; 1,800 mi) at 12 knots (22 km/h; 14 mph)
Endurance19 days
Complement6 officers and 34 sailors, plus up to 9 additional
Sensors and
processing systems
  • Kelvin-Hughes Type 1007 navigational radar
  • GEC-Marconi Type 2093M variable-depth minehunting sonar
Electronic warfare
& decoys
  • AWADI PRISM radar warning and direction-finding system
  • Radamec 1400N surveillance system
  • 2 × Wallop Super Barricade decoy launchers
Armament

HMAS Yarra (M 87) is the sixth Huon-class minehunter to have been built for the Royal Australian Navy (RAN) and the fourth warship to be named after the Yarra River in Victoria. Built by a joint partnership between Australian Defence Industries (ADI) and Intermarine SpA, Yarra was constructed at ADI's Newcastle shipyard, and entered service in 2003.

Contents

Design and construction

In 1993, the Department of Defence issued a request for tender for six coastal minehunters to replace the problematic Bay-class minehunters. [1] The tender was awarded in August 1994 to Australian Defence Industries (ADI) and Intermarine SpA, which proposed a modified Gaeta-class minehunter. [1] [2]

Yarra has a full load displacement of 732 tons, is 52.5 metres (172 ft) long, has a beam of 9.9 metres (32 ft), and a draught of 3 metres (9.8 ft). [3] Main propulsion is a single Fincantieri GMT BL230-BN diesel motor, which provides 1,985 brake horsepower (1,480 kW) to a single controllable-pitch propeller, allowing the ship to reach 14 knots (26 km/h; 16 mph). [4] Maximum range is 1,600 nautical miles (3,000 km; 1,800 mi) at 12 knots (22 km/h; 14 mph), and endurance is 19 days. [3] [4] The standard ship's company consists of 6 officers and 34 sailors, with accommodation for 9 additional (typically trainees or clearance divers). [3] The main armament is a MSI DS30B 30 mm cannon, supplemented by two 0.50 calibre machine guns. [4] The sensor suite includes a Kelvin-Hughes Type 1007 navigational radar, a GEC-Marconi Type 2093M variable-depth minehunting sonar, an AWADI PRISM radar warning and direction-finding system, and a Radamec 1400N surveillance system. [3] Two Wallop Super Barricade decoy launchers are also fitted. [3]

For minehunting operations, Yarra uses three 120 horsepower (89 kW) Riva Calzoni azimuth thrusters to provide a maximum speed of 6 knots (11 km/h; 6.9 mph): two are located at the stern, while the third is sited behind the variable-depth sonar. [4] Mines are located with the minehunting sonar, and can be disposed of by the vessel's two Double Eagle mine disposal vehicles, the Oropesa mechanical sweep, the Mini-Dyad magnetic influence sweep, or the towed AMASS influence sweep (which is not always carried). [4] To prevent damage if a mine is detonated nearby, the ships were built with a glass-reinforced plastic, molded in a single monocoque skin with no ribs or framework. [4] As the ships often work with clearance divers, they are fitted with a small recompression chamber. [3]

Yarra was built by Australian Defence Industries in Newcastle, New South Wales, launched on 19 January 2002, and commissioned into the RAN on 1 March 2003. [3] Yarra is based at HMAS Waterhen in Sydney, along with the majority of the RAN's mine warfare assets. [3]

Operational history

In May 2003, Yarra and sister ship Hawkesbury were operating off the coast of Queensland on exercises. [5] During this, the two ships were tasked with checking the believed location of the shipwreck of AHS Centaur, a hospital ship sunk off Moreton Island during World War II, following several media stories indicating that the wreck at this location might not be the hospital ship. [5] These searches, followed up by the hydrographic survey ship HMAS Melville a month later, found that the wreck had been incorrectly marked as Centaur since its discovery in 1995. [5]

Following the discovery by the survey ships Benalla, and Shepparton, of a submerged object that corresponded to the dimensions of Australian submarine AE1, which had disappeared off the coast of East New Britain during World War I, Yarra was sent in June 2007 to confirm the findings. [6] The object was found to be a submarine-shaped rock formation. [7]

On the morning of 13 March 2009, Yarra 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. [8] The minehunter was one of the thirteen ships involved in the ceremonial entry through Sydney Heads, and anchored in the harbour for the review.

In October 2013, Yarra participated in the International Fleet Review 2013 in Sydney. [9]

Citations

  1. 1 2 "Australia plans new mine warfare force". Jane's International Defence Review. Jane's Information Group. 26 (6). 1 June 1993.
  2. ↑ "Defence Materiel Organisation – Sea 1555 Project". Department of Defence – Australian Government. 13 June 2006. Archived from the original on 3 October 2006. Retrieved 16 January 2007.
  3. 1 2 3 4 5 6 7 8 Saunders (ed.), IHS Jane's Fighting Ships 2012–2013, p. 33
  4. 1 2 3 4 5 6 Wertheim (ed.), The Naval Institute Guide to Combat Fleets of the World, p. 23
  5. 1 2 3 "Navy findings of search for ex Army Hospital Ship (AHS) Centaur" (Press release). Australian Department of Defence. 29 June 2003. Retrieved 2 June 2009.
  6. ↑ AAP (1 March 2007). "Missing WWI sub may have been found". The Sydney Morning Herald. Retrieved 1 March 2007.
  7. ↑ "Resurface of mystery". Navy News. Australian Government, Department of Defence. 14 June 2007. Retrieved 7 December 2008.
  8. ↑ Brooke, Michael (2 April 2009). "Marching into History". Navy News. Department of Defence.
  9. ↑ "Participating Warships". International Fleet Review 2013 website. Royal Australian Navy. 2013. Archived from the original on 10 December 2013. Retrieved 14 December 2015.

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References


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