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
FIA2026 animated banner
Lightfoot International joins Nordic Climate Group in UK

Defence Security

Lightfoot International joins Nordic Climate Group in UK

11 June 2026

Nordic Climate Group has acquired Lightfoot International, a specialist provider of cooling solutions for defence and industrial applications.

Keysight wins Leonardo UK TEMS contract

Defence

Keysight wins Leonardo UK TEMS contract

11 June 2026

Keysight Technologies has been awarded a five-year contract with Leonardo UK Ltd to deliver Test Equipment Managed Services (TEMS) across multiple sites in the UK.

Babcock recruitment drive seeks mechanics

Defence

Babcock recruitment drive seeks mechanics

10 June 2026

Babcock is calling on skilled mechanics to swap family hatchbacks for battle tanks and play a vital role supporting national security operations.

IFS launches IFS Zero

Aerospace Defence

IFS launches IFS Zero

10 June 2026

IFS has launched IFS Zero, an agentic AI Emissions Operating System designed for asset-intensive industries, such as aerospace and defence, where organisations face pressure to improve emissions reporting and supply chain transparency, with Scope 3 compliance now a contractual requirement.

Advertisement
ODU RT
ISTEC

Defence

ISTEC's ECRP selected by BAE Systems

10 June 2026

BAE Systems has selected ISTEC Services Limited and its Enhanced Close Range Protection (ECRP) shield wall system, to provide increased physical protection for an overseas customer.

Antevia secures JOSCAR accreditation

Aerospace Defence Security Events

Antevia secures JOSCAR accreditation

10 June 2026

Antevia Networks today announced that it has successfully achieved accreditation for JOSCAR (the Joint Supply Chain Accreditation Register), a collaborative tool used by a growing number of prime contractors and buyers in the aerospace, defence and security industry to act as a single repository for pre-qualification and compliance information.

Advertisement
ODU RT
Advertisement
FIA2026 animated banner