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Hydrogen-powered submarine drone completes 1,257-mile mission without surfacing
Updated On: 29 April, 2026 08:54 AM IST | Toronto | Agencies
A hydrogen fuel cell-powered submarine drone by Cellula Robotics completed a 1,257-mile underwater mission, operating for 385 hours without surfacing. The Envoy AUV marks a breakthrough in long-endurance autonomous underwater technology
The hydrogen-fuelled sub. PIC COURTESY/Cellula Robotics
A submarine drone has traveled more than 1257 miles fully submerged, powered by hydrogen fuel cells, and completed a 385-hour mission without surfacing.
Built by Cellula Robotics in British Columbia, Canada, the Envoy autonomous underwater vehicle (AUV) measures about 27.9 feet in length and 3.3 feet in diameter.
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