Hobart-class destroyer

HMAS Hobart fitting out in June 2016
Class overview
Name:	Hobart class
Builders:	Navantia (designer) AWD Alliance (project coordinator) ASC (primary shipbuilder) Forgacs Group and BAE Systems Australia (module builders)
Operators:	Royal Australian Navy
Preceded by:	Perth-class destroyer and Adelaide-class frigate
Cost:	A$8 billion for 3 ships (original contract cost)
Built:	2009–present
Building:	3
Planned:	3
Active:	0
General characteristics (as designed)
Type:	Air warfare destroyer
Displacement:	6,250 tonnes (6,150 long tons; 6,890 short tons) full load
Length:	147.2 metres (483 ft)
Beam:	18.6 metres (61 ft) maximum
Draught:	5.17 metres (17.0 ft)
Propulsion:	Combined diesel or gas (CODOG) arrangement 2 × General Electric Marine model 7LM2500-SA-MLG38 gas turbines, 17,500 kilowatts (23,500 hp) each 2 × Caterpillar Bravo 16 V Bravo diesel engines, 5,650 kilowatts (7,580 hp) each 2 × controllable pitch propellers
Speed:	Over 28 knots (52 km/h; 32 mph)
Range:	Over 5,000 nautical miles (9,300 km; 5,800 mi) at 18 knots (33 km/h; 21 mph)
Complement:	186 + 16 aircrew Accommodation for 234
Sensors and processing systems:	Aegis combat system Lockheed Martin AN/SPY-1D(V) S-band radar Northrop Grumman AN/SPQ-9B X-band pulse Doppler horizon search radar Raytheon Mark 99 fire-control system with two continuous wave illuminating radars 2 × L-3 Communications SAM Electronics X-band navigation radars Ultra Electronics Sonar Systems' Integrated Sonar System Ultra Electronics Series 2500 electro-optical director Sagem VAMPIR IR search and track system Rafael Toplite stabilised target acquisition sights
Electronic warfare & decoys:	ITT EDO Reconnaissance and Surveillance Systems ES-3701 ESM radar SwRI MBS-567A communications ESM system Ultra Electronics Avalon Systems multipurpose digital receiver Jenkins Engineering Defence Systems low-band receiver 4 × Nulka decoy launchers 4 × 6-tube multipurpose decoy launchers
Armament:	48-cell Mark 41 Vertical Launch System RIM-66 Standard 2 missile RIM-162 Evolved Sea Sparrow missile 2 × 4-canister Harpoon missile launchers 1 × Mark 45 (Mod 4) 5-inch gun 2 × Mark 32 Mod 9 two-tube torpedo launchers Eurotorp MU90 torpedoes 1 × Phalanx CIWS 2 × 25mm M242 Bushmaster autocannons in Typhoon mounts
Aircraft carried:	1 x MH-60R Seahawk

The Hobart class is a ship class of three air warfare destroyers (AWDs) being built for the Royal Australian Navy (RAN). Planning for ships to replace the Adelaide-class frigates and restore the capability last exhibited by the Perth-class destroyers began by 2000, initially under acquisition project SEA 1400, which was redesignated SEA 4000. Although the designation "Air Warfare Destroyer" is used to describe ships dedicated to the defence of a naval force (plus assets ashore) from aircraft and missile attack, the planned Australian destroyers are expected to also operate in anti-surface, anti-submarine, and naval gunfire support roles.

Planning for the Australian Air Warfare Destroyer (as the class was known until 2006) continued through the mid-2000s, with the selection of the Aegis combat system as the intended combat system and ASC as the primary shipbuilder in 2005. In late 2005, the AWD Alliance was formed as a consortium of the Defence Materiel Organisation (DMO), ASC, and Raytheon. Between 2005 and 2007, Gibbs & Cox's Evolved Arleigh Burke-class destroyer concept and Navantia's Álvaro de Bazán-class frigate competed for selection as the AWD design. Although the Arleigh Burke design was larger and more capable, the Álvaro de Bazán design was selected in June 2007 as it was an existing design, and would be cheaper, quicker, and less risky to build.