Fleetzero and Glosten Develop Record-Range Hybrid Electric Vessel
Fleetzero, a developer of modular propulsion systems for hybrid and electric maritime vessels, has partnered with Glosten, a naval architecture and marine engineering firm, to design a hybrid electric vessel with the world’s longest range.
The collaboration aims to advance zero-emission shipping and promote electric propulsion in the commercial maritime industry.

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Building on their prior work, Glosten assisted Fleetzero in retrofitting an AET-owned Lightering Support Vessel with a plug-in hybrid-electric system, enabling primarily battery-powered operation post-retrofit.
According to Fleetzero CEO Steven Henderson, this vessel marks a significant milestone for the industry, showcasing efficient, eco-friendly propulsion technology.
Design work is underway, with detailed engineering to follow soon, and construction is slated to begin in mid-2026.
The vessel is expected to set a new standard for long-range hybrid-electric maritime systems.
Glosten’s CEO Morgan Fanber emphasized the project’s role in advancing marine technology.
Based in Houston, Texas, Fleetzero specializes in modular hull construction, hybrid propulsion, and autonomous navigation, while Glosten provides expertise in naval architecture and engineering for vessels like research ships, tugs, and ferries.
