HMAS Oxley (S 57)

HMAS Oxley (S 57) was an Oberon class submarine of the Royal Australian Navy (RAN).

Design and construction

The Oberon class was based heavily on the preceding Porpoise class of submarines, with changes made to improve the vessels' hull integrity, sensor systems, and stealth capabilities.^[1] Eight submarines were ordered for the RAN, in two batches of four.^[2] The first batch (including Oxley) was approved in 1963, and the second batch was approved during the late 1960s, although two of these were cancelled before construction started in 1969, with the funding redirected to the Fleet Air Arm.^[3][4] This was the fourth time the RAN had attempted to establish a submarine branch.^[5]

The submarine is 295.2 feet (90.0 m) long, with a beam of 26.5 feet (8.1 m), and a draught of 18 feet (5.5 m) when surfaced.^[6] At full load displacement, she displaces 2,030 tons when surfaced, and 2,410 tons when submerged.^[6] The two propeller shafts are each driven by an English Electric motor providing 3,500 brake horsepower and 4,500 shaft horsepower; the electricity for these is generated by two Admiralty Standard Range supercharged V16 diesel generators.^[7] The submarine could travel at up to 12 knots (22 km/h; 14 mph) on the surface, and up to 17 knots (31 km/h; 20 mph) when submerged, had a maximum range of 9,000 nautical miles (17,000 km; 10,000 mi) at 12 knots (22 km/h; 14 mph), and a test depth of 200 metres (660 ft) below sea level.^[6][7] When launched, the boat had a company of 8 officers and 56 sailors, but by the time she decommissioned, the number of sailors had increased to 60.^[6][7] In addition, up to 16 trainees could be carried.^[7]

The main armament of the Oberons consisted of six 21-inch (533.4 mm) torpedo tubes.^[1] The British Mark 8 torpedo was initially carried by the submarine; this was later replaced by the wire-guided Mark 23.^[8] During the 1980s, the Australian Oberons were upgraded to carry United States Navy Mark 48 torpedoes and UGM-84 Sub Harpoon anti-ship missiles.^[5] As of 1996, the standard payload of an Australian Oberon was a mix of 20 Mark 48 Mod 4 torpedoes and Sub Harpoon missiles.^[6] Some or all of the torpedo payload could be replaced by Mark 5 Stonefish sea mines, which were deployed through the torpedo tubes.^[6][8] On entering service, two stern-mounted, short-length 21-inch (53 cm) torpedo tubes for Mark 20 anti-submarine torpedoes.^[9] However, the development of steerable wire-guided torpedoes made the less-capable aft-firing torpedoes redundant; they were closed off, and later removed during a refit.^[9]

Oxley was laid down by Scotts Shipbuilding and Engineering Company at Greenock, Scotland on 2 June 1964, launched on 24 September 1965 and commissioned into the RAN on 21 March 1967.

Operational history

Decommissioning and fate

Oxley paid off on 13 February 1992 and was scrapped.^[5][10] Her fin is on display outside the Submarine Training and Systems Centre at HMAS Stirling and her bow is preserved at the Western Australian Maritime Museum in Fremantle.

Citations

References

• Bastock, John (1975). Australia's Ships of War. Cremorne, NSW: Angus and Robertson. ISBN 0207129274. OCLC 2525523. 
• Chant, Christopher (1987). A Compedium of Armaments and Military Hardware. Routledge. ISBN 0710207204. http://books.google.com/books?id=k9cNAAAAQAAJ&dq=&as_brr=3&source=gbs_summary_s&cad=0. Retrieved 30 July 2008. 
• Cooper, Alastair (2001). Stevens, David. ed. The Royal Australian Navy. The Australian Centenary History of Defence (vol III). South Melbourne, VIC: Oxford University Press. ISBN 0195541162. OCLC 50418095. 
• Sharpe, Richard, ed (1992). Jane's Fighting Ships 1992-93 (95th ed.). Surrey, UK: Jane's Information Group. ISBN 0710609833. OCLC 25930144. 
• Sharpe, Richard, ed (March 1996). Jane's Fighting Ships 1996–97 (99th ed.). Surrey: Jane's Information Group. ISBN 0710613555. OCLC 34998928. 
• Shaw, Lindsey (2005). HMAS Onslow: cold war warrior. Sydney, NSW: Australian National Maritime Museum. ISBN 0975148244. OCLC 225390609.