The US Navy Just Tested a Military Drone That Can Fly at 40,000 Feet for 30 Hours Straight

Image Courtesy: GA-ASI

The U.S. Navy has evaluated the MQ-9B SeaGuardian, a remotely piloted aircraft designed to fly above 40,000 feet and remain airborne for more than 30 hours. Developed by General Atomics Aeronautical Systems (GA-ASI), the drone is being assessed as a potential force multiplier for maritime surveillance, reconnaissance, and anti-submarine warfare missions.

The evaluation took place during activities organized by the Maritime Patrol and Reconnaissance Force Commander’s Operational Group at Whidbey Island, Washington. The aircraft is being operated under a company-owned, company-operated contract supporting the U.S. Navy’s ongoing capability assessment for the 7th Fleet.

The MQ-9B SeaGuardian is the maritime variant of the MQ-9B uncrewed aircraft system. Its extended endurance and satellite-based communications allow it to conduct missions beyond the line of sight while monitoring large ocean areas for prolonged periods.

The aircraft is designed for maritime domain awareness, surface surveillance, and anti-surface warfare, as well as anti-submarine warfare. It can also support search-and-rescue operations, disaster relief, and maritime law enforcement.

With a wingspan of approximately 79 feet and a length of 38 feet, the SeaGuardian has a maximum takeoff weight of around 12,500 pounds. A Honeywell TPE331-10 turboprop engine powers the aircraft, which can reach speeds of approximately 210 knots. Its flight endurance varies depending on the configuration and mission requirements.

The platform can integrate maritime surveillance radar, an automatic identification system, electronic support measures, and a specialized anti-submarine warfare mission kit. These capabilities allow it to gather information across the maritime environment, including detecting and tracking surface vessels and supporting the search for submarines.

Whidbey Island has previously supported SeaGuardian operations during U.S. Navy exercises, including Northern Edge and Integrated Battle Problem, as well as aircraft carrier pre-deployment training. The aircraft also appeared at the base’s 2025 open house.

GA-ASI says the evaluation gives naval personnel an opportunity to examine the aircraft’s capabilities alongside the P-8A Poseidon maritime patrol aircraft. The assessment could help determine how remotely piloted systems complement crewed aircraft in future naval operations.