The Armidale class is a class of patrol boats built for the Royal Australian Navy (RAN). Planning for a class of vessels to replace the fifteen Fremantle-class patrol boats began in 1993 as a joint project with the Royal Malaysian Navy, but was cancelled when Malaysia pulled out of the process. The project was reopened in 1999 under the designation SEA 1444, with the RAN as the sole participant. Of the seven proposals tendered, the Austal Ships/Defence Maritime Services (DMS) proposal for twelve vessels based on an enlarged Bay-class patrol boat was selected. Two additional patrol boats were ordered in 2005 to provide a dedicated patrol force for the North West Shelf Venture.
All fourteen vessels were constructed by Austal Ships at Henderson, Western Australia. The first vessel, HMAS Armidale, was commissioned into the RAN in June 2005, and the last, HMAS Glenelg, entered service in February 2008. The Armidale-class ships are operated by the Australian Patrol Boat Group, and based in Cairns and Darwin. They are primarily tasked with border protection, fisheries patrols, and the interception of unauthorised arrivals by sea. The Armidales are longer and heavier than their Fremantle-class predecessors, with improved seakeeping ability and increased range, allowing them to reach Australia's offshore territories. The ships are multi-crewed, with three ship's companies available for every two vessels, allowing the patrol boats to spend more time at sea without cutting into sailors' rest or training time.
During their early service life, there were problems with the fuel systems across the class, and a 20-bunk auxiliary accommodation compartment has been banned from use after toxic fumes were found in the compartment on multiple occasions. The high operational tempo from the Operation Resolute and Operation Sovereign Borders border protection and asylum seeker interception operations, combined with design flaws and poor maintenance, resulted in the ships suffering from hull fracturing around the engineering spaces, mechanical defects, and corrosion issues. DMS's contract to provide in-service support will be terminated in 2017, and the patrol boats are undergoing a major refit in Singapore to reinforce the hull. Two Cape-class patrol boats have been chartered to supplement naval patrol boat availability during the refit cycle, and plans to replace the Armidales with an enlarged class of offshore combatant vessel have been accelerated to bring them into service by the early 2020s.
After extensive damage from an onboard fire, HMAS Bundaberg was decommissioned at the end of 2014. A fictional Armidale-class boat, HMAS Hammersley, appears in the Australian military drama series Sea Patrol from the second season onwards, with filming occurring aboard multiple ships of the class.
|Operators:||Royal Australian Navy|
|Preceded by:||Fremantle class|
|Succeeded by:||Arafura class|
|Cost:||A$24–28 million per ship.|
|Displacement:||300 tons standard load|
|Length:||56.8 m (186 ft)|
|Beam:||9.7 m (32 ft)|
|Draught:||2.7 m (8.9 ft)|
|Propulsion:||2 × MTU 4000 16V 6,225 horsepower (4,642 kW) diesels driving twin propellers|
|Speed:||25 knots (46 km/h; 29 mph)|
|Range:||3,000 nautical miles (5,600 km; 3,500 mi) at 12 knots (22 km/h; 14 mph)|
|Endurance:||21 days standard, 42 days maximum|
|Boats & landing |
|2 × Zodiac 7.2 m (24 ft) RHIBs|
|Complement:||21 crew standard, 29 crew maximum, maximum 150 persons onboard|
|Sensors and |
|Bridgemaster E surface search/navigation radar|
|Electronic warfare |
Planning for the Armidale class began in 1993, as a plan to replace the Fremantle class, which was due for retirement in 1998. This evolved into a joint program with Malaysia to construct an offshore patrol craft. When Malaysia pulled out, the plan was scrapped, and the Fremantles underwent a life-extending refit. The cost of maintaining the aging vessels prompted the Department of Defence to create the Replacement Patrol Boat program, which received the procurement project designation SEA 1444.
SEA 1444 marked several departures from the Department's standard acquisition requirements. Instead of specifying a number of vessels, the coverage of 3,000 ship-days per year (with 1,800 to be spent on border protection operations, and a surge capability of 3,600 days) was given, with the producer to determine how many ships were needed to meet this. The ships had to meet specific performance parameters, such as the ability to conduct boarding operations in conditions up to Sea State 4, and to maintain surveillance capability up to Sea State 5. The producer was also required in the contract to provide support and maintenance for the ships, for fifteen years after construction completed.
Nine companies expressed interest in the project; of these, seven had the required capability to build the ships. These seven were narrowed down to three based on each tender's merit, competitiveness with the other tenders, and successful meeting of Australian industry involvement targets for both construction and long-term support. Austal Ships and Defence Maritime Services (DMS) partnered to offer twelve ships based on an expanded version of the latter's Bay-class patrol boat, in use with the Australian Customs Service. The companies submitted two proposals for a 56-metre (184 ft) vessel, one with a steel hull, and one with an aluminium hull; the latter offering a 21% reduction in fuel consumption. Australian Defence Industries (ADI) tendered a design based on the Royal Danish Navy's Flyvefisken-class patrol vessel. The vessel was to be built with a glass-reinforced plastic hull, similar to ADI's Huon-class minehunters. The Tenix proposal was a variant of a 56-metre (184 ft) search and rescue vessel constructed for the Philippine Coast Guard. The tender was awarded to the Austal/DMS partnership in December 2003. The contract was valued at A$553 million, with each ship costing between A$24 million and A$28 million to construct.
During the 2004 federal election, the Coalition promised to acquire two more patrol boats to provide a dedicated patrol force for the oil and gas producing facilities located off the north-west coast of Australia. These were ordered in 2005.
All fourteen ships were constructed by Austal at their shipyard in Henderson, Western Australia. Lead ship HMAS Armidale was commissioned into the RAN in June 2005. Two other patrol boats were delivered to the RAN in 2005, six in 2006, and five in 2007, with the final ship in the class, HMAS Glenelg, delivered in October 2007 and commissioned in February 2008. At one stage, six vessels were being constructed simultaneously.
Each patrol boat has a length of 56.8 metres (186 ft), a beam of 9.7 metres (32 ft), a draught of 2.7 metres (8.9 ft), and a standard displacement of 300 tons. The hull is of the semi-displacement vee type, and is fabricated from aluminum alloy. The ship is designed to a combination of Det Norske Veritas standards for high-speed light craft and RAN requirements: much effort went into avoiding attempts to overengineer the Armidales or turn them into 'miniature warships'.
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 4000 16V diesel engine, providing 6,225 horsepower (4,642 kW). 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, including the Cocos (Keeling) Islands and Christmas Island. The Armidale class has demonstrated an improved seakeeping ability over the preceding Fremantle class: the Armidales are 15 metres (49 ft) longer, 85 tons heavier, and have hydraulic stabiliser fins and trim tabs incorporated into the design, allowing them to survive conditions up to Sea State 9. The vessels are designed for standard patrols of 21 days, with a maximum endurance of 42 days.
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. This cannon has a rate of fire of 200 rounds per minute, and is controlled remotely from the bridge. Two 12.7-millimetre (0.50 in) machine guns are also carried.
Boarding operations are performed by two 7.2-metre (24 ft), waterjet propelled rigid-hulled inflatable boats (RHIB), which carry ten people (a fully equipped, eight-strong boarding party, and two boat crew). The RHIBs are larger and more powerful than the single RHIB aboard a Fremantle, are capable of operating independently of their mothership, and carry their own communications, navigation, and safety equipment. Each RHIB has a dedicated cradle and davit, the boats can be launched and recovered easily, and a centralised 'dressing room' incorporated into the ship's design has streamlined the deployment and return of personnel.
The patrol boats are fitted with a Bridgemaster E surface search and navigational radar, a Toplite electro-optical detection system, and a Warrlock direction finding system. A Prism III radar warning system was fitted to the last two boats during construction, and refitted to the rest. Tenders for a Naval Unmanned Aerial System (NUAS) capability for the Armidale class were requested in mid-2014.
Each patrol boat has a standard ship's company of 21 personnel, with a maximum of 29 (not including use of the austere compartment). Unlike the Fremantle-class patrol boats, the Armidales do not have a permanently assigned ship's company. Instead, there are 21 crews established for the 14 Armidale-class patrol boats, which are divided up into four divisions: Attack, Assail, Ardent, and Aware. The first three of the Divisions are assigned six crews for four ships, while Aware has three crews for two ships. The ships are continually manned, with two out of three crews actively deployed while the third undergoes leave or training, or prepares to transfer into a ship: a handover can be accomplished in less than six hours. The intention of multi-crewing is to allow the ships to spend more time at sea, without compromising sailors' rest time or training requirements.
Junior sailors are housed in four-berth cabins, as opposed to the central sixteen-berth mess deck of the Fremantles, while senior sailors and commissioned officers either have individual or share two-berth cabins. Personnel have access to e-mail and satellite television, and the galley is better equipped than that on a Fremantle-class vessel and better suited to use in heavy seas. The comfort of personnel is also significantly improved over the Fremantles, with air conditioning throughout the entire ship (excluding engine and machinery compartments).
The introduction of the class into service has not been without problems. Since June 2005, all active Armidales have undergone operating restrictions on two occasions, both due to water contamination of the main fuel systems. The first occurrence, in September 2006, led to the suspension of operations by the patrol boats for a month, and the engineering controls were redesigned. The problem occurred again in January 2007, and led to an 'operational pause' while Austal redesigned the fuel system, engineering procedures were altered, and fuel quality criteria were tightened. The five ships yet to be completed were fitted with the modified fuel system during construction, while the active ships were refitted over the course of 2007. As of December 2007, no further fuel problems have occurred.
A 20-berth auxiliary accommodation compartment (the 'austere' 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. However, a malfunction in the sewage treatment facilities aboard HMAS Maitland in August 2006 pumped hydrogen sulphide and carbon monoxide into the compartment, non-fatally poisoning four sailors working inside. Use of the compartment as accommodation was banned across the class, and is still in effect as of January 2014. In 2010, allegations were made to The Australian that a sailor working in the austere compartment on a different vessel had been gassed with hydrogen sulphide, and carbon monoxide was regularly detected in the enclosed space. Following publication of the allegations, Chief of Navy Russ Crane claimed that there was no record of the alleged gassing incident, and while there were ongoing incidents of poisonous gasses detected in the compartment, the sensors were set to trigger well below dangerous levels, and modifications were being made to the sewerage and ventilation systems.
In 2014, the navy reported the recurrence of hull cracking around the engine spaces, which has been attributed to a combination of design issues related to the aluminium hull, and the high tempo of operations. By 2015, several patrol boats were confined to port because of structural, mechanical, and corrosion issues. In response, the Department of Defence threatened to cancel DMS' maintenance contract based on the company's poor performance in maintaining the Armidales (but did not go ahead due to the political repercussions from potentially losing local jobs). Defence and Serco (the parent company of DMS) later agreed to end the contract in 2017, with the Australian government to tender for a new in-service support contract during 2016. The patrol boat fleet began a mid-life refit program in October 2015, in order to extend hull life until a replacement class of larger vessels enters service from 2022. Patrol boats are being refitted two at a time in Singapore, with the RAN chartering the Cape-class patrol boats Cape Byron and Cape Nelson from mid-2015 until the end of 2016 to supplement naval patrol boat availability. During work on the first two patrol boats, the estimated cost of work-per-vessel doubled to A$7 million.
The Armidale-class ships are operated by the Australian Patrol Boat Group and are primarily tasked with border protection and fisheries patrols. As of 2009, up to seven Armidale-class boats are assigned to patrols of Australian waters at any given time as part of Operation Resolute (and later Operation Sovereign Borders), with an increase to nine of the fourteen vessels when required. Ardent Division and four ships are based at HMAS Cairns in Cairns, while the other three divisions and ten ships are located at HMAS Coonawarra in Darwin. Up to two ships (typically HMA Ships Glenelg and Maryborough, plus Aware Division) can be forward-based at Dampier, Western Australia, facilitating patrols of the oil and gas producing facilities located off the north-west coast of Australia.
At the start of 2014, the long transit differences and near-constant deployment of the patrol boats for Operation Resolute was impacting on the ability to keep the vessels properly maintained.
In August 2014, a fire broke out aboard Bundaberg while undergoing refit work at a civilian shipyard in Hemmant, Queensland. The patrol boat was extensively damaged, and was decommissioned on 18 December.
|Ship||Commissioning date||Commissioning location||Decommissioned|
|Attack Division (6 crews, based at HMAS Coonawarra, Darwin)|
|HMAS Armidale (ACPB 83)||24 June 2005||Darwin, Northern Territory|
|HMAS Larrakia (ACPB 84)||10 February 2006||Darwin, Northern Territory|
|HMAS Bathurst (ACPB 85)||10 February 2006||Darwin, Northern Territory|
|HMAS Albany (ACPB 86)||15 July 2006||Albany, Western Australia|
|Assail Division (6 crews, based at HMAS Coonawarra, Darwin)|
|HMAS Pirie (ACPB 87)||29 July 2006||Port Pirie, South Australia|
|HMAS Maitland (ACPB 88)||29 September 2006||Newcastle, New South Wales|
|HMAS Ararat (ACPB 89)||10 November 2006||Melbourne, Victoria|
|HMAS Broome (ACPB 90)||10 February 2007||Broome, Western Australia|
|Ardent Division (6 crews, based at HMAS Cairns, Cairns)|
|HMAS Bundaberg (ACPB 91)||3 March 2007||Bundaberg, Queensland||18 December 2014|
|HMAS Wollongong (ACPB 92)||14 April 2006||Sydney, New South Wales|
|HMAS Childers (ACPB 93)||7 July 2007||Cairns, Queensland|
|HMAS Launceston (ACPB 94)||22 September 2007||Launceston, Tasmania|
|Aware Division (3 crews, based at HMAS Coonawarra, Darwin)|
|HMAS Maryborough (ACPB 95)||8 December 2007||Brisbane, Queensland|
|HMAS Glenelg (ACPB 96)||22 February 2008||Adelaide, South Australia|
From the second season onwards of Sea Patrol, an Australian military drama series, the fictional Armidale-class patrol boat HMAS Hammersley (pennant number 82) is used as the main setting. In 2008, two ships were conflated to represent Hammersley: 42 of the 86 days of filming were spent aboard HMAS Broome, with later pick-up filming aboard HMAS Launceston.
Defending Australia in the Asia Pacific Century: Force 2030, the 2009 Department of Defence white paper, proposed replacing the Armidales, along with the RAN's mine warfare and hydrographic vessels, with a single class of multi-role offshore combatant vessels (OCVs). These vessels, with a theoretical maximum displacement up to 2,000 tonnes, would use a modular mission payload system to change between roles as required, and would be equipped for helicopter or unmanned aerial vehicle operations. The 2013 white paper postponed the multi-role OCV as a long-term project.
The 2013 white paper proposed that an existing OCV design be sourced as a short-term replacement for the Armidale class. Procurement project SEA 1179 is undertaking several studies towards the replacement of the Armidales. A design is yet to be selected as of 2015, but the replacement OCV will be larger than the Armidales, providing improved seakeeping and endurance. Construction is predicted to start in 2018, with entry into service from 2022. A hull remediation program was implemented to extend the lifespans of the patrol boats to this point.
Journal and news articles
The Australian Patrol Boat Group is a Force Element Group (FEG) of the Royal Australian Navy. The group's mission is to provide patrol boat capability for the protection of Australia's national interests.
The Patrol Boat Group operates thirteen (originally fourteen, HMAS Bundaberg was decommissioned in 2014 due to fire damage) Armidale class patrol boats. The Group's headquarters is located at HMAS Coonawarra in the city of Darwin, additional support is provided by the class logistics office at HMAS Cairns.HMAS Albany (ACPB 86)
HMAS Albany (ACPB 86), named for the city of Albany, Western Australia, is an Armidale-class patrol boat of the Royal Australian Navy (RAN).HMAS Ararat
Two ships of the Royal Australian Navy (RAN) have been named HMAS Ararat, for the town of Ararat, Victoria.
HMAS Ararat (K34), a Bathurst-class corvette launched in 1943 and scrapped in 1961
HMAS Ararat (ACPB 89), an Armidale-class patrol boat launched in 2006 and active as of 2016HMAS Ararat (ACPB 89)
HMAS Ararat (ACPB 89), named for the town of Ararat, Victoria, is an Armidale-class patrol boat of the Royal Australian Navy (RAN).HMAS Bathurst (ACPB 85)
HMAS Bathurst (ACPB 85), named for the city of Bathurst, New South Wales, is an Armidale class patrol boat of the Royal Australian Navy (RAN).HMAS Broome (ACPB 90)
HMAS Broome (ACPB 90), named for the city of Broome, Western Australia, is an Armidale-class patrol boat of the Royal Australian Navy (RAN).HMAS Cairns (naval base)
HMAS Cairns is a Royal Australian Navy (RAN) base located adjacent to the Trinity Inlet on the shore of Trinity Bay in Cairns, Queensland, Australia. Although used regularly as a port-of-call since before World War II, a permanent RAN presence was not established until 1971, when a maintenance and support base for patrol boats was set up. The base was formally commissioned in 1971 as a minor war vessel base. The current commander of the base is Commander David Hannah, RAN.
HMAS Cairns is responsible for all Australian naval activity off north-eastern Australia, and is the home base for one Armidale class patrol boat, two Cape class patrol boats and the ships of the Royal Australian Navy Hydrographic Service.HMAS Childers (ACPB 93)
HMAS Childers (ACPB 93) is an Armidale-class patrol boat of the Royal Australian Navy (RAN). Named for the towns of Childers, Queensland and Childers, Victoria, Childers is the only ship in the RAN to be named after two towns.HMAS Glenelg (ACPB 96)
HMAS Glenelg (ACPB 96), named for the city of Glenelg, South Australia is an Armidale-class patrol boat of the Royal Australian Navy (RAN).HMAS Larrakia
Two ships of the Royal Australian Navy have been named HMAS Larrakia, after the Larrakia Aborigines:
HMAS Larrakia, an air-sea rescue and patrol vessel operated during World War II
HMAS Larrakia (ACPB 84), an Armidale-class patrol boat commissioned in 2006 and operational as of 2016HMAS Larrakia (ACPB 84)
HMAS Larrakia (ACPB 84) is an Armidale-class patrol boat of the Royal Australian Navy (RAN).HMAS Launceston
Three ships of the Royal Australian Navy (RAN) have been named HMAS Launceston, after the city of Launceston, Tasmania.
HMAS Launceston (J179), a Bathurst-class corvette commissioned in 1942, and transferred to the Turkish Navy in 1946
HMAS Launceston (FCPB 207), a Fremantle-class patrol boat laid down in 1980 and decommissioned in 2006
HMAS Launceston (ACPB 94), an Armidale-class patrol boat commissioned in 2007 and active as of 2016HMAS Launceston (ACPB 94)
HMAS Launceston (ACPB 94) is an Armidale-class patrol boat of the Royal Australian Navy (RAN).HMAS Maitland (ACPB 88)
HMAS Maitland (ACPB 88), named for the city of Maitland, New South Wales, is an Armidale-class patrol boat of the Royal Australian Navy (RAN).HMAS Maryborough
Two ships of the Royal Australian Navy (RAN) have been named HMAS Maryborough, after the city of Maryborough, Queensland
HMAS Maryborough (J195), a Bathurst-class corvette commissioned in 1941, decommissioned in 1945, and sold into private ownership in 1947
HMAS Maryborough (ACPB 95), an Armidale-class patrol boat commissioned in 2007 and active as of 2016HMAS Pirie (ACPB 87)
HMAS Pirie (ACPB 87), named for the city of Port Pirie, South Australia, is an Armidale-class patrol boat of the Royal Australian Navy (RAN).HMAS Wollongong
Three ships of the Royal Australian Navy (RAN) have been named HMAS Wollongong, after the city of Wollongong, New South Wales
HMAS Wollongong (J172), a Bathurst-class corvette launched in 1941 and sold to the Royal Netherlands Navy in 1946
HMAS Wollongong (FCPB 206), a Fremantle-class patrol boat launched in 1981, and decommissioned in 2005
HMAS Wollongong (ACPB 92), an Armidale-class patrol boat commissioned in 2007 and active as of 2018HMAS Wollongong (ACPB 92)
HMAS Wollongong (ACPB 92), named for the city of Wollongong, New South Wales, is an Armidale-class patrol boat of the Royal Australian Navy (RAN).List of ship commissionings in 2006
The list of ship commissionings in 2006 includes a chronological list of all ships commissioned in 2006.
Armidale-class patrol boats