Advancing UK Aerospace, Defence, Security & Space Solutions Worldwide
  • Home
  • /
  • Defence
  • /
  • BAE Systems to upgrade Mk 45s for US Navy

Defence

BAE Systems to upgrade Mk 45s for US Navy

The US Navy has awarded BAE Systems over $70 million to upgrade Mk 45 five inch naval gun systems and ancillary equipment.

Above: The Mk 45 is the lightest, most compact five inch (127mm) fully automatic naval gun in the world, built to integrate precision guided munitions with minimal gun modifications to ensure the US Navy and their allies, have the advanced firepower they need.
Courtesy BAE Systems / US Navy Photo

On 30th September, BAE Systems received a $23.5 million modification to a $47 million contract awarded at the end of July, bringing the total value to over $70 million. Under the contract, BAE Systems will upgrade and overhaul existing systems to the Mk 45 Mod 4 configuration.
 
The upgrade to the Mk 45 Mod 4 configuration includes a 62-calibre barrel and a mechanically strengthened gun mount. It also features a fully digital control system that easily integrates targeting and fire control data. Together, these upgrades allow the use of modernised munitions with 50% greater firing energy and prepare for future precision-guided munitions with unprecedented ranges.
 
Brent Butcher, vice president of Weapon Systems at BAE Systems, said: "Events in the Red Sea this year have underscored the importance of firepower aboard US Navy ships.

Advertisement
ODU RT

“Equipped with the latest configuration of the Mk45 gun system, the men and women in the Navy have the capabilities to protect themselves at sea. We continue our commitment to providing the latest naval gun technology, including advanced munitions, to US Sailors and their allies.”
 
Upgrades and overhauls to the Mk 45 are a cost-effective solution to ensure that US Navy Sailors have the modern long-range strike and air defence capability that they require, ensuring peak performance from a deep magazine of advanced five inch projectiles that are easily replenished at-sea. By upgrading these platforms, Sailors will receive the latest innovative technology that will support advanced munitions and future mission capabilities at a lower cost than a new gun system.
 
Work on the contract will take place at the BAE Systems production facility in Louisville, Kentucky and will be completed by the end of 2028.

Advertisement
Security & Policing 2026
Quantum Systems introduces UGV MANDRILL

Defence

Quantum Systems introduces UGV MANDRILL

6 March 2026

Quantum Systems has introduced its own unmanned ground vehicle (UGV) called MANDRILL, officially launching the ground robotics domain within the group of companies.

BMT to launch ROC-Sim at Oceanology International

Defence

BMT to launch ROC-Sim at Oceanology International

6 March 2026

BMT is launching ROC-Sim - a scalable high fidelity virtual test environment and training solution enabling development, testing and assurance of uncrewed and autonomous systems - on the first day of Oceanology International, taking place next week at ExCel London (10th-12th March).

Serco continues health support for ADF readiness

Defence Security

Serco continues health support for ADF readiness

6 March 2026

Serco has been awarded a contract extension with Bupa to deliver health services across Australian Defence Force (ADF) Health Centres for a further 12 months to 30th June 2027.

Babcock launches joint skills pact with Fife and Forth Valley colleges

Defence

Babcock launches joint skills pact with Fife and Forth Valley colleges

6 March 2026

Babcock International Group, Fife College and Forth Valley College are to accelerate the development of Scotland’s defence and advanced manufacturing workforce through a new joint skills pact outlined in a Memorandum of Understanding (MoU) signed by the three organisations.

Advertisement
Security & Policing Rectangle
Smith Myers expands ARTEMIS capability

Aerospace Defence Security

Smith Myers expands ARTEMIS capability

5 March 2026

Smith Myers Communications Ltd. today announced the addition of passive Wi-Fi and Bluetooth detection and geolocation capability, together with ATAK Cursor-on-Target (CoT) integration, expanding the capability of its ARTEMIS system.

Metamorphic AM launches Rapid Geometry Review

Aerospace Defence

Metamorphic AM launches Rapid Geometry Review

5 March 2026

UK-based design and engineering consultancy, Metamorphic AM, which provides advanced computational Design for Additive Manufacturing (DfAM) programmes, has launched Rapid Geometry Review, a new service aimed at making high-level DfAM expertise more commercially accessible.

Advertisement
PTC rectangle
Advertisement
Security & Policing 2026