Sweden adopts remote naval gun systems from Rheinmetall

Small naval vessels increasingly require automated close-range defence against fast and low-observable threats such as drones and small craft. In this context, Sweden ordered eight remote-controlled naval gun systems from Rheinmetall for its Combat Boat 90 fleet.

Integration into coastal combat craft
The contract, placed in February 2026 and valued at approximately €63 million, covers eight Seasnake 30 weapon stations intended as the primary armament of new Combat Boat 90 fast assault craft. The agreement also includes training ammunition in 30 mm calibre with airburst capability, spare parts, services and a four-year support period. An option allows expansion by up to 29 additional systems. Delivery of the first unit is scheduled for February 2028.

Combat Boat 90 vessels operate in shallow coastal environments where engagement distances are short and reaction time is limited. Remote weapon stations address this requirement by separating operator position from the gun mount while maintaining stabilized targeting accuracy under high vessel motion.

Sensors and automated engagement
The Seasnake 30 combines a revolver cannon with an integrated sensor suite consisting of daylight cameras, infrared imaging and a laser rangefinder. Target detection and tracking functions operate automatically and can follow multiple targets simultaneously.

The cannon reaches a nominal maximum firing rate of 1,100 rounds per minute. Airburst ammunition allows detonation at a calculated point in space rather than impact, improving effectiveness against small airborne targets such as unmanned aerial vehicles. The system therefore functions as part of a layered close-range defence architecture.

Compact signature and operational endurance
The weapon station is designed with a low silhouette to reduce detection probability by opposing sensors. Remote operation limits crew exposure during engagement and supports continuous monitoring during patrol missions.

By combining optical tracking, ballistic calculation and automated firing control, the system reduces operator workload in high-speed coastal engagements typical of littoral warfare environments. The order represents the first adoption of the Seasnake 30 by a NATO navy and integrates the platform into Sweden’s maritime defence infrastructure.

www.rheinmetall.com