HMAS Maryborough (ACPB 95)

The Armidale-class patrol boats are 56.8 metres (186 ft) long, with a beam of 9.7 metres (32 ft), a draught of 2.7 metres (8 ft 10 in), and a standard displacement of 270 tons.[2] The semi-displacement vee hull is fabricated from aluminium alloy, and each vessel is built to a combination of Det Norske Veritas standards for high-speed light craft and RAN requirements.[3] The Armidales can travel at a maximum speed of 25 knots (46 km/h; 29 mph), and are driven by two propeller shafts, each connected to an MTU 16V M70 diesel.[4] The ships have a range of 3,000 nautical miles (5,600 km; 3,500 mi) at 12 knots (22 km/h; 14 mph), allowing them to patrol the waters around the distant territories of Australia, and are designed for standard patrols of 21 days, with a maximum endurance of 42 days.[4][3]

The main armament of the Armidale class is a Rafael Typhoon stabilised 25-millimetre (0.98 in) gun mount fitted with an M242 Bushmaster autocannon.[4] Two 12.7-millimetre (0.50 in) machine guns are also carried.[5] Boarding operations are performed by two 7.2-metre (24 ft), waterjet propelled rigid-hulled inflatable boats (RHIBs).[3] Each RHIB is stored in a dedicated cradle and davit, and is capable of operating independently from the patrol boat as it carries its own communications, navigation, and safety equipment.[3][6]

Each patrol boat has a standard ship's company of 21 personnel, with a maximum of 29.[4][3] The Armidales do not have a permanently assigned ship's company; instead, they are assigned to divisions at a ratio of two vessels to three companies, which rotate through the vessels and allow the Armidales to spend more time at sea, without compromising sailors' rest time or training requirements.[3][7] A 20-berth auxiliary accommodation compartment was included in the design for the transportation of soldiers, illegal fishermen, or unauthorised arrivals; in the latter two cases, the compartment could be secured from the outside.[8] However, a malfunction in the sewerage treatment facilities aboard HMAS Maitland in August 2006 pumped hydrogen sulphide and carbon monoxide into the compartment, non-fatally poisoning four sailors working inside, after which use of the compartment for accommodation was banned across the class.[7][8]

Maryborough was one of two patrol boats ordered in 2005, following an 2004 federal election promise that the Coalition would provide a dedicated patrol force for the oil and gas producing facilities located off the north-west coast of Australia.[4][3][9] Maryborough was constructed by Austal at their shipyard in Henderson, Western Australia.[2] She was commissioned into the RAN in Brisbane on 8 December 2007.[2]

In December 2019 the Maryborough left Darwin, for Honiara, the capital of the Solomon Islands, accompanied by the newly commissioned Solomon Islands patrol vessel RSIPV Gizo.[10] The vessels engaged in joint training exercises.

On 26 May 2017 Maryborough suffered from an Engine Room fire while at sea operating North-West of Darwin. No crew members were injured and the ship returned to Darwin for an assessment of the damage.[11]

Books

• Heron, Wesley; Powell, Anthony (2007). "Welcome to the Armidale Class". In Forbes, Andrew; Lovi, Michelle (eds.). Australian Maritime Issues 2006 (PDF). Papers in Australian Maritime Affairs. Sea Power Centre – Australia. pp. 129–134. ISBN 0-642-29644-8. ISSN 1327-5658. Archived from the original (PDF) on 13 June 2011. Retrieved 12 May 2010.
  • The chapter is available separately as Semaphore, Issue 4, 2006 in PDF and HTML formats.
• Saunders, Stephen, ed. (2012). IHS Jane's Fighting Ships 2012–2013. Jane's Fighting Ships. Coulsdon: IHS Jane's. ISBN 9780710630087. OCLC 793688752.
• Wertheim, Eric, ed. (2007). The Naval Institute Guide to Combat Fleets of the World: Their Ships, Aircraft, and Systems (15th ed.). Annapolis, MD: Naval Institute Press. ISBN 978-1-59114-955-2. OCLC 140283156.

Journal and news articles

• Kerr, Julian (1 January 2008). "Plain sailing: Australia's Armidales prove fit for task". Jane's Navy International. Jane's Information Group.
• Kerr, Julian (8 December 2007). "Patrol boats shake down fuel faults". The Australian: Defence Special Report. News Corporation. p. 8.
• McKenna, Michael (2 January 2010). "Gas risk remains for navy boats". The Australian. Retrieved 7 January 2010.

• Royal Australian Navy webpage for HMAS Maryborough (II)