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The Hobart class is a ship class of three air warfare destroyers (AWDs) 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 re-designated 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.

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$9.1 billion (2020) for 3 units + ToT (est.)
A$3.03 billion (2020) per unit (est.)
Built
2009–2020
Planned 3
Active 3

General characteristics (as designed)
Type Guided missile destroyer
Displacement
7,000 tonnes (6,900 long tons; 7,700 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, hull mounted sonar and towed sonar[4]
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, accepting:
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 × MH-60R Seahawk

It has been announced that the three ships of the class will be upgraded at the cost of AU$5.1 billion. This includes the upgrade of the Aegis Weapon System to Baseline 9 or 10, the possible replacement of the current AN/SPY-1D(V) radar with a more powerful radar and the integration of new missiles, namely the SM-6 surface to air missile, Tomahawk land attack cruise missile, and the Naval Strike Missile.

https://en.m.wikipedia.org/wiki/Hobart-class_destroyer