The sparkling waters of Noosa River have long been a backdrop for serenity and scenic exploration. Now, those same waters are hosting a maritime innovation – Noosa Ferry & Cruise Co’s newest vessel, the hybrid-electric HV Stillwater. At the forefront of this evolution is ePropulsion, whose advanced electric outboard and battery systems are helping set a new standard in sustainable and accessible marine tourism.
A Modern Catamaran with a Mission
Launched in May 2025 and purpose-built for the unique conditions of the Noosa River, the Stillwater is a locally designed and constructed catamaran, built by Noosa Marine and designed by naval architect Roger Hill. The vessel seats 52 passengers and accommodates up to 14 wheelchairs, making it the most universally accessible ferry operating in Noosa.
Its lightweight DuFLEX composite construction enhances fuel efficiency and performance—but it’s what lies in the engine well that defines Stillwater’s bold step into the future.
Hybrid Propulsion, Electric Heart
The Stillwater is powered by a hybrid propulsion system: two low-emission petrol outboards are complemented by a centrally mounted 40kW ePropulsion X40 electric outboard, which offers clean, silent, and emission-free operation when needed—ideal for quiet zones and eco-cruising on the river.
At the core of the X40’s performance are four units of ePropulsion’s cutting-edge G102 battery system. Each G102 is a high-voltage, intelligent lithium iron phosphate battery with exceptional energy density, fast charging capability, and long service life. Collectively, they give the Stillwater ample range and endurance to operate effectively on electric power alone during scheduled cruises
The X40: Electric Excellence on Display
The ePropulsion X40 is a next-generation electric outboard designed specifically for commercial use. With 88.2% powertrain efficiency, electric steering, power trim/tilt, and smart throttle controls, it delivers not just clean energy—but a refined, intelligent boating experience. For operators like Noosa Ferry Co, the X40 offers low maintenance, zero emissions, and quiet operation, making it a perfect match for eco-conscious, passenger-centric operations.
Accessibility Meets Sustainability
The Stillwater isn’t just green—it’s inclusive. The vessel features a single-level cabin with wide access points, unobstructed river views, and safety features designed to accommodate guests of all mobility levels. The thoughtful integration of clean technology and inclusive design makes the Stillwater a vessel that truly reflects Noosa’s progressive environmental and social values.
A Template for the Future of River Transport
The deployment of the ePropulsion X40 and G102 battery system aboard the Stillwater signals a maturing shift in the marine industry—where electric propulsion is no longer experimental, but a trusted solution for commercial passenger vessels.
As more operators seek to reduce noise, emissions, and operational costs, the Stillwater stands as a high-profile example of how forward-thinking technology and local craftsmanship can deliver real change. Learn More
Cruise aboard the Stillwater: www.noosaferry.com
Discover the X Series at e-propulsion.com.au
