The ALPV, also known as the Sea Specter, is a 65-foot (19.75-meter) semi-submersible unmanned surface vessel (USV) engineered for stealth logistics operations. Drawing design inspiration from low-profile, narcotics-smuggling craft, the ALPV offers extremely low visual, radar, and infrared signatures, making it an ideal platform for contested maritime zones. The vessel’s form factor and semi-submersibility enable discreet transport of high-value payloads with minimal detectability.

The vessel can carry between 2,000 and 4,627 kilograms of cargo over distances up to 2,200 nautical miles (4,074 km) at a cruising speed of 14.8 km/h, powered by a 230-horsepower Cummins diesel engine. The internal payload compartment spans 8.84 m in length, offering substantial volume for military resupply or mission equipment.

Sea Machines was selected following evaluation as the supplier of autonomous command and control capabilities for the ALPV, via our SM300 Autonomous Command and Control system. This system enables long-range, line-of-sight and over-the-horizon remote operations, autonomous navigation, collision avoidance, and situational awareness in contested environments. These capabilities are essential for a vessel intended to operate far from support in communications denied environments or high-risk maritime zones.

The ALPV has undergone extensive field testing since 2023, evaluated in Project Convergence Capstone 4, a major joint and multinational exercise hosted by the U.S. Army. 

Sea Machines is proud to contribute proven autonomy solutions to this advanced platform and remains committed to supporting the U.S. Marine Corps’ evolving needs for operational resilience, logistics reach, and unmanned capability in peer-contested domains. For more information about the SM300 Autonomous Command and Control system, visit: https://sea-machines.com/products/sm300-autonomous-command-control/

Contact:
Phil Bourque, VP of Global Sales
pbourque@sea-machines.com

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