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
Accles & Pollock expands its capabilities

Aerospace Defence

Accles & Pollock expands its capabilities

16 June 2026

West Midlands based Accles & Pollock – a trading division of Clydesdale Engineering Ltd – is further expanding its capabilities to include presswork, laser cutting and metal fabrication.

NP Aerospace receives GDLS add-on armour contract

Defence

NP Aerospace receives GDLS add-on armour contract

16 June 2026

NP Aerospace has today announced the award of a contract by General Dynamics Land Systems–Canada (GDLS–Canada) for the design and manufacture of add-on vehicle armour systems for a Light Armoured Vehicle (LAV) international order.

Avon Protection introduces short-duration CBRN CS-PAPR

Defence Security Events

Avon Protection introduces short-duration CBRN CS-PAPR

16 June 2026

Avon Protection has introduced its Combination System Powered Air Purifying Respirator (CS-PAPR), a new short duration (SD) breathing apparatus option of their Powered Air Purifying Respirator (PAPR) for integration with a Combination Respirator Unit (CRU).

Thales unveils LGR275 Proxy at Eurosatory

Defence Events

Thales unveils LGR275 Proxy at Eurosatory

16 June 2026

Thales has unveiled its LGR275 Proxy at Eurosatory in Paris, a 70mm laser-guided rocket specifically designed to effectively neutralise the threat posed by Unmanned Aerial Systems (UAS).

Advertisement
ODU RT
Clarion appoints James Samuel as Managing Director – Live Events

Defence Events

Clarion appoints James Samuel as Managing Director – Live Events

16 June 2026

Clarion Events Defence and Security has appointed James Samuel as its new Managing Director – Live Events, to lead DSEI’s global expansion.

Roke launches Nav-Sync Armour

Defence

Roke launches Nav-Sync Armour

16 June 2026

Romsey based Roke has launched Nav-Sync Armour, a Controlled Reception Pattern Antenna (CRPA) system redefining access to resilient navigation across globally contested environments.

Advertisement
ODU RT
Advertisement
FIA2026 animated banner