Boeing has secured $3.1bn in contracts from the US Navy for Harpoon and Standoff Land Attack Missile Expanded Response (SLAM ER) weapon systems in support of Foreign Military Sales (FMS).

Boeing Weapons vice-president Cindy Gruensfelder said: “We are pleased to continue our long legacy of partnering with the navy to build weapons that defend America and its international partners.

“These awards will not only extend production of the Harpoon programme through 2026, they will also restart the production line for SLAM ER and ensure deliveries through 2028.”

Under the contract, Boeing will provide non-recurring engineering associated with the SLAM ER obsolescence redesign effort and the production and delivery of 650 SLAM ER missiles in support of the government of Saudi Arabia.

The company will perform the work in St Louis, Missouri (47%), Indianapolis, Indiana (37%), Pontiac, Michigan (9%), and Melbourne, Florida (3%). Work will also be performed at its locations in Middletown, Connecticut (2%), and Black Mountain, North Carolina (2%), and is expected to be completed by December 2028.

Boeing also won a contract valued at $656m to provide 467 Harpoon anti-ship missiles to Japan, India, South Korea, Qatar, Brazil, and The Netherlands.

Harpoon Block II is an ideal weapon for anti-ship and land-strike missions and features an autonomous, all-weather, over-the-horizon strike capability. SLAM ER is a combat-proven, all-weather, over-the-horizon, precision-strike missile.

Boeing last delivered the SLAM ER weapon system in 2008.

The company started construction on a new 35,000ft² manufacturing facility in October last year to support increased production for the Harpoon and SLAM ER programmes.

Construction of the facility is slated for completion next year.