Saildrone has introduced Spectre, a new unmanned surface vessel (USV) designed for anti-submarine warfare (ASW), intelligence, surveillance, reconnaissance (ISR), and strike missions. The platform represents the company s largest and most capable USV to date and was unveiled in April 2026.

Spectre is a 52 m-long, 250-tonne vessel capable of speeds up to 30 knots and long-range operations exceeding 3,000 nautical miles. The platform is built with an aluminium hull and integrates a 43-metre composite Saildrone Wing manufactured by American Magic Services.

The composite wing is a key structural and aerodynamic element, enabling wind-assisted propulsion that supports extended endurance and reduced energy consumption during long-duration missions. The system also incorporates hybrid diesel-electric propulsion, allowing near-silent electric operation for acoustically sensitive missions and higher-speed diesel operation for strike roles.

The platform is offered in two configurations. The Spectre Silent Endurance variant uses the composite wing for wind-assisted propulsion during extended maritime surveillance and ASW missions. The Spectre Stealth Strike variant operates without the wing, enabling a lower profile and higher-speed performance for kinetic strike applications. The vessel is designed to support modular payloads, including sonar systems, electronic warfare equipment, and vertical launch systems.

Spectre is intended for naval operations requiring persistent presence and scalable unmanned deployment. The system supports submarine detection, maritime surveillance, and strike missions, addressing operational gaps where continuous coverage is required without reliance on crewed vessels.

For the composites industry, the platform highlights the increasing role of large-scale composite structures in autonomous maritime systems. The 43-metre composite wing is central to the vessel s performance, combining structural efficiency with aerodynamic functionality to enable wind-assisted propulsion in harsh ocean environments. This reflects the expanding use of composites in defence-focused unmanned platforms where endurance, corrosion resistance, and weight optimisation are critical design requirements.

The Spectre platform is expected to undergo continued development and sea trials as part of Saildrone s broader expansion into advanced naval autonomy systems, with initial operational testing planned for 2027.