FCV Vanguard

The FCV Vanguard, the world's first hydrogen-powered, high-performance speedboat, isn't just a boat—it's a testament to what's possible when innovation meets determination.

Transforming a Legend: From V8 to Z-Class Fuel Cell

The FCV Vanguard began its journey powered by an iconic 502 cubic inch (8.2-liter), 470 horsepower gasoline V8 renowned for its raw power.

We took this legendary machine and gave it a new heart—the Z-Class fuel cell power system. The result? A vessel that surpasses its former glory with added strategic advantages at the tactical edge.

Repowering for Tactical Advantage

The body of the FCV Vanguard originates from a 1995 offshore powerboat—a compact, high-performance vessel built to operate at the limits of speed and agility. Traditionally, achieving this level of performance came at the cost of high fuel consumption, noise, and environmental impact.
The FCV Vanguard proves that even legacy, high-demand platforms can be transformed into low-signature, mission-capable assets—enhancing operational effectiveness without compromising mobility or sustainability in sensitive environments.

Facing Challenges, Setting New Standards

The successful conversion of a 1995 power-boat powertrain to ZEI’s “Z-Class” system required addressing several complex engineering hurdles, many of which are also directly relevant to automotive and industrial, and defense applications:

Space Constraints

Integrating the hydrogen fuel cell system and storage tanks within the limited space of a 27-foot boat without compromising structural integrity or usability.

Weight Distribution and Stability

Ensuring optimal weight balance to maintain performance and safety is critical in marine and automotive vehicle design.

High Power Demands

Developing a fuel cell system that delivers the necessary power and torque for high-speed operation in a compact form factor.

Hydrogen Storage Safety

Designing and implementing robust hydrogen storage and handling safety systems in confined spaces, addressing similar concerns in automotive fuel cell vehicles.

Harsh Environment Adaptation

Engineering components to withstand exposure to elements like salt water and variable temperatures, paralleling the durability requirement of automotive and industrial systems.

Power and Performance

The prototype Z-Class fuel cell power system installed in the FCV Vanguard proves that high-performance propulsion and low-signature operation can coexist—delivering tactical capability without compromising mission security.

Original Engine Highlights

Engine: Mercruiser 500 EFI
‍Displacement: 502 cubic inches (8.2 liters)
‍Horsepower: 470 HP
‍Fuel System: Electronic Fuel Injection (EFI)

Z-Class System Benefits

The Z-Class system on board the FCV Vanguard not only matches the original engine's capabilities but offers additional benefits:

Low Thermal : Generates minimal thermal signature.
Quiet Operation: Significantly reduces noise levels.
Higher Efficiency: Improved fuel economy.
Modularity: Flexible design allows for scalability and adaptability.

FCV Vanguard Powertrain Specifications

Peak power outperforms the original V8

The Z-Class propulsion system delivers 390 kW (522 HP) at peak (10s) and continuously drives 280 kW (375 HP) with a torque metric of 630 Nm (465 lb-ft), outperforming the gas engine it replaced.

In original placements with proportional weight

The Z-Class propulsion measures 1950 mm long x 990 mm wide x 850 mm deep and weighs 700 kg (1,540 lbs), which means the boat loses no propulsion efficiency with no measurable structural impact.

Leverages electrified power using gaseous hydrogen

With instant start time and a liquid-cooled design, the Z-Class propulsion system delivers a nominal system efficiency >50% in a compact form factor that uses robust hydrogen storage, handling safety.

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