Sea Archer And Longbow USVs Could Get Cruise Missiles

Kongsberg’s Naval Strike Missile, inset, may be integrated onto the Sea Archer USV (main picture) and its larger variant, Longbow.
Kongsberg’s Naval Strike Missile, inset, may be integrated onto the Sea Archer USV (main picture) and its larger variant, Longbow. Images: Kongsberg and Leidos
17/11/2025

Leidos is looking at the possibility of arming its Sea Archer and Longbow uncrewed surface vessels (USVs) with Kongsberg’s Naval Strike Missile (NSM).

As per a recent press statement Leidos Australia has signed a Memorandum of Understanding (MOU) with Kongsberg Defence Australia to investigate integrating the NSM on its two USV platforms.

The NSM is a sea-skimming, guided cruise missile with autonomous target recognition and the ability to perform manoeuvres to avoid defence systems. It has a range of more than 180 miles.

Sea Archer, currently under construction in Australia, is capable of speeds of up to 40 knots, can carry a payload of just under a tonne, and has a range of 1,500 nautical miles. The larger Longbow variant sees payload capacity increased to three tonnes and range extended to in excess of 2,750 nautical miles.  

Chief executive of Leidos Australia Paul Chase commented: “This MOU represents a significant step forward in exploring a mission-ready, sovereign maritime strike capability for Australia.” 

He added: “By combining the proven performance of the NSM with the flexibility and endurance of a Longbow Sea Archer, we are offering… a potent, adaptable and locally supported solution for future operational needs.”

The U.S. Marine Corps is currently testing the Sea Archer USV; it already uses a land-based strike version of the NSM.

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