BAE Systems to upgrade Mk 45 control systems on Anzac-class frigates
The upgrade to Anzac-class Mk 45 guns will allow the ships to be integrated with new munitions. (Photo: Royal Australian Navy)
The Australian government has contracted BAE Systems to upgrade the Mk 45 naval guns on the Royal Australian Navy’s (RAN’s) fleet of Anzac-class frigates to Mod 4 standard.
It will provide them with the Common Control System used by the US Navy (USN) and support parallel development with new RAN ships such as the Hunter-class ships under construction which will be fitted with Mk 45 guns.
According to BAE Systems, the upgrade will modify existing Mk 45 systems to eliminate obsolescence issues and extend the life of the gun system, as well as equip the Mk 45s with the capability to integrate future extended-range precision guided munitions such as the hypervelocity projectile.
The company stated: ‘The upgrade ensures that Mk 45 gun systems remain supportable for decades to come and ready to integrate the latest, most innovative technology features to support advanced munitions and future mission capabilities for a significantly lower cost than a new gun.’
Work on the contract will take place at the BAE Systems production facility in Louisville, Kentucky, with the first delivery planned for early 2026.
Over the past five years, BAE Systems has signed multiple contracts to update the Mk 45 gun systems deployed by different navies.
In 2018, USN ordered four existing guns to the Mod 4 configuration under a contract worth US$46.8 million. Mk 45 gun systems have been upgraded to Mod 4 also in South Korea, Japan and Denmark.
According to BAE Systems, variations of the Mk 45 have been deployed on more than 240 ships in 10 different countries.
Related Equipment in Defence Insight
More from Naval Warfare
-
SOF Week 2026: US NSW explores 3D-printed USVs for forward-deployed operations
US Naval Special Warfare Command is assessing the feasibility of rapidly producing expendable mid-sized USVs in theatre to support SOF and maritime security missions.
-
MARSOC selects upgraded Shark Marine dive navigation system
MARSOC is procuring the Shark Marine Dive Tablet 2 to address a longstanding combat diver navigation capability gap, improving underwater positioning, situational awareness and integration with existing diver propulsion vehicles.
-
SOF Week 2026: NSW expands commercial UxS push to maritime platforms as USASOC advances FPV drone effort
The US Army Special Operations Command and Naval Special Warfare are accelerating efforts to integrate commercial uncrewed systems, with NSW broadening its solicitation to include USVs and UUVs alongside new requirements for ISR, kinetic operations and swarm technologies.
-
SOF Week 2026: US Navy USV completes record eight-day autonomous mission
The MARTAC T38 Devil Ray USV has set a new endurance benchmark as the US Navy pushes deeper into autonomous maritime warfare.
-
UK Royal Navy dock build question remains open ahead of Programme Euston tender
The UK MoD’s Programme Euston floating dry dock tender has exposed a question about the UK’s naval industrial base: does Britain still have the depth to sustain its own deterrent without foreign intervention.