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Making all ships robots.
Fleetzero builds electric and hybrid propulsion systems for large ships and is developing unmanned cargo vessels.
Fleetzero is a marine technology company that sells electric and hybrid marine propulsion systems and modular energy storage for commercial vessels. Its offerings include Leviathan marine batteries and modular propulsion/hull concepts designed to enable decarbonized, cost-effective shipping with white-glove project execution.
Leviathan modular energy storage system: scalable battery modules designed for high energy density, claimed to be 3.8 MWh per marine battery container with a footprint of 25% of a standard container; supports long-range missions and hybridization. End-to-end integration services from concept to commissioning with marine engineers and mariners. Fleetzero also offers modular propulsion and modular hull concepts to reduce construction costs and enable scalable, shipyard-friendly builds. The Battery Barge concept (55 MWh) suggests mobile, fleet-wide storage capable of servicing multiple vessels. The company emphasizes custom solutions, energy price parity with fossil fuels, and payback periods under six years for most projects.
Who it’s for: Commercial shipping operators and fleets seeking decarbonization and total cost of ownership improvements through electric/hybrid propulsion and energy storage solutions.
Selected to build world’s longest-range hybrid-electric vessel; Series A funding in 2025 from notable investors; ongoing product development and deployments with a focus on scaling and modularization
Steven is a marine engineer by background and has managed a wide range of businesses and operations in the marine environment including cargo ships, a hospital ship, and one of the largest offshore facilities in the US Gulf of Mexico. He has a bachelors of science in Marine Engineering Systems from the US Merchant Marine Academy and an MBA from Harvard Business School. Steven served in the US Navy Reserve as a Strategic Sealift Officer.
Michael is a marine engineer and enterprise sales professional. He graduated from the US Merchant Marine Academy with a BS in Marine Engineering Systems and received an MBA from Rice. Michael brings expertise in marine engineering, ship operations, and significant business experience in energy and shipping. He is also proud to have served as an officer in the US Navy Reserve.
Electric cargo ships
We make the world's most efficient aircraft
