New Zealand-based Vessev has launched the VS–Drive, a commercial-grade electric propulsion system designed to keep hydrofoiling vessels efficient and reliable even in tropical conditions. That’s a challenge the company says has limited electric marine operations in hotter climates.
Max Olson, co-founder and chief technology officer at Vessev, says the VS–Drive was built from scratch to address overheating in electric marine systems. “The VS–Drive began as a clean-sheet design to overcome one of the trickiest challenges in electric marine propulsion: overheating. The result is sustained high-torque output and reliable performance in tropical climates.”
At the heart of the design is an internal closed-loop cooling system that keeps the motor operating below 50°C — half of its 100°C tolerance — enabling consistent output regardless of water temperature. The submersible, podded drive delivers a continuous 65 kW (90 horsepower) at 25 knots, with peak output of 110 kW (150 horsepower) and torque of 400 Nm.
Currently powering Vessev’s nine-metre VS–9 hydrofoiling catamaran, the VS–Drive will scale to 12 and 18 metre models now in development. The VS–9, in service with New Zealand’s largest ferry operator, offers a 40 nautical mile range at cruise speed and reportedly runs with near-silent operation — reportedly quiet enough for a normal conversation at full speed. That started service in January this year. The first VS-9 hydrofoiling ferry, Kermadec, is being utilised by Fullers360.
The VS–Drive’s direct-drive configuration eliminates gearboxes and long driveshafts, reducing energy loss and maintenance. Its modular design supports easy servicing, and long-life bearings with sensor monitoring enable operators to track system health in real time. The drive’s vectorable rudder mount enhances low-speed manoeuvrability, allowing smooth operation across varied marina layouts.
Vessev chief executive officer Eric Laakmann says the company expects the new propulsion system to broaden the market for electric hydrofoiling transport. “We’re excited to see operators around the world benefit from this propulsion technology across a range of applications,” he says.
Development of the VS–Drive was co-funded by New Zealand’s Low Emission Transport Fund, administered by the Energy Efficiency and Conservation Authority (EECA).
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