PROJECTS
CURRENT PROJECTS
THE WATER-GO-ROUND



When launched in mid-2019 the Water-Go-Round will be the first fuel cell vessel in the US and the first commercial fuel cell ferry in the world. The completion of this project represents a global paradigm shift for marine vessel power. Built by GGZEM and its partners, this vessel will serve as a demonstration to the commercial and regulatory community at large. Performance will be independently measured by Sandia National Laboratories.
TECHNICAL SPECIFICATIONS
H2 tank array 264 kg, 250 bar compressed gas, up to 2 full days operation
2x 300 kW (400 hp) shaft motors (1 in each demi-hull)
100 kWh batteries in hulls provide boost power to achieve 22 knots
70' Overall Length, Aluminum hull, 84 passengers with high visibility window arrangement

WANT YOUR OWN
WATER-GO-ROUND?
PAST PROJECTS
THE SF-BREEZE



TECHNICAL SPECIFICATIONS
150 passengers
Aluminum catamaran
109' Overall Length, 33' Beam
35 knots top speed
4.92 MW installed fuel cell power, 1,200 kg liquid hydrogen (LH2)

THE ENHYDRA
TECHNICAL SPECIFICATIONS
600-passengers
aluminum monohull
128' Overall Length, 30' Beam
Diesel electric hybrid propulsion
Two 80 kWh lithium-ion battery packs
300 kW electric motor

THE MATTHEW TURNER
GGZEM adviser Charlie Walther volunteers with design and construction of a traditional wooden tall ship, Matthew Turner, which will serve as an experiential learning platform for Bay Area youth. This 132-foot, two-masted sailing vessel looks 150-years old but has state-of-the art hybrid technology that can charge its batteries with solar panels and while under sail through generators connected to its propellers. All electrical needs on the ship will come from the batteries, including the twin 265-hp electric motors.
TECHNICAL SPECIFICATIONS
132′ Overall Length, 25′ Beam & 38 Berths for voyaging
11 Sails (7,200 sq ft), Height of main mast: 100'
Displacement: 175 tons
Constructed with Douglas Fir, Oregon White Oak and Bronze Fastenings
Two 200 KW electric motors regenerating power under sail
Two 50 KWH banks of Lithium batteries & Two 265 KW bio-fuel generators

Far from the realm of theory, our team lives and breathes this work. We feel fortunate to have the opportunity to pursue our passions while making an impact on an industry that has touched our lives in meaningful ways. Want to get involved? Reach out and join us on the journey to a cleaner, brighter future.