Arafura-class offshore patrol vessel

	KDB Darulaman at the Royal Australian Navy International Fleet Review 2013. The Arafura-class is based on the Lürssen-designed Darussalam-class, operated by the Royal Brunei Navy.
Class overview
Name	Arafura class
Builders	Lürssen Australia (designer); ASC Shipbuilding (first two); Forgacs Marine & Defence (remainder);
Operators	Royal Australian Navy
Preceded by	Armidale-class patrol boat
Cost	A$3.6 billion (2018) for 12 vessels; A$300 million (2018) per unit;
Built	November 2018 – present
Planned	6 (from 12)
Building	6
Cancelled	6
General characteristics
Type	Offshore patrol vessel
Displacement	1,640 tonnes
Length	80 metres
Beam	13 metres
Draught	4 metres
Propulsion	2 x 4,440kW diesel engines
Speed	22 knots (41 km/h; 25 mph) (maximum)
Range	4,000 nmi (7,400 km)
Endurance	21 days
Complement	40
Sensors and ; processing systems	SAAB Situational Awareness System (SAS) with Saab EOS500 electro-optical fire control director, Terma SCANTER 6002 radar, Safran Vigy Engage electro-optical surveillance and fire control multisensor system
Armament	1 x 40mm Oto Marlin 40 autocannon (cancelled); 1 × Rafael Typhoon stabilised gun mount fitted with a 25 mm M242 Bushmaster autocannon (interim); 2 x .50 calibre machine guns; 2 x 8.5 metre sea boats; 1 x 10 metre sea boat;
Aircraft carried	Unmanned aerial vehicle; light UAV capability to be integrated under Project Sea 129
Aviation facilities	Utility deck

The Arafura class is a class of offshore patrol vessels being built for the Royal Australian Navy (RAN). Initially proposed in the 2009 Defence White Paper and marked as procurement project SEA 1180, it was originally planned that 20 Offshore Combatant Vessels (OCV) would replace 26 vessels across four separate ship classes: the Armidale-class patrol boats, the Huon-class minehunters, the Leeuwin-class survey vessels, and the Paluma-class survey motor launches. Although having a common design (which could be up to 2,000 tonnes in displacement), the ships would use a modular mission payload system to fulfill specific roles; primarily border patrol, mine warfare, and hydrographic survey. The 2013 Defence White Paper committed to the OCV project as a long-term goal, but opted in the short term for an accelerated procurement of an existing design to replace the Armidales, and life-extension refits for the other types. This resulted in the Offshore Patrol Vessel (OPV) project and the number of vessels reduced to 12. However, this was further increased to 14 when 2 further Mine Counter Measures variants were proposed under SEA 1905.

Then-Prime Minister Malcolm Turnbull announced on 18 April 2016 that ship designers Damen, Fassmer and Lürssen had been shortlisted for the project. On 24 November 2017, the government announced that Lürssen had been selected.

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