Discover Your System
STOK Electric delivers integrated hybrid propulsion systems for marine vessels. We offer both serial and parallel hybrid systems for high-performance applications. Our systems combine electric motors (10–200 kW) with generators or diesel engines up to 900 hp.
Fully Integrated into your vessel
Scalable LiFePO4 battery pack designed for marine use. Water-resistant and built for reliability, it adapts to your boating needs and provides long-lasting, safe, and consistent propulsion power.
Central power hub that ensures safe energy distribution and communication across all components. Its plug-and-play architecture speeds up installation and enhances onboard system reliability.
High-efficiency direct-drive motor (10–200 kW) with no gearbox required. All essential electronics are integrated on the motor for easy installation, minimal wiring, and long-term reliability.
Connects 12V/24V service and high-voltage propulsion batteries. Enables two-way energy flow, letting you power onboard systems or recharge from propulsion — creating one smart energy network.
Reliable marine-grade generator for hybrid systems, available up to 200 kW. Automatically supports propulsion or charges the battery bank when needed — extending range without sacrificing silence or efficiency.
Top or side mount throttle in rugged aluminum, plus a physical button panel. Combined with NMEA2000 display integration, you get full command and real-time insight into your electric system.
Applications by Power
From compact drives for leisure yachts to powerful systems for commercial vessels, STOK Electric delivers a scalable solution for every marine application. Our drive range supports a wide spectrum of boat sizes, offering quiet operation, strong performance, and zero emissions.
Proven Marine Power
At STOK Electric, we deliver full electric propulsion solutions — from design to installation and support. One system, one partner, full control from start to finish.
Our systems are engineered for durability. With premium materials and craftsmanship, we guarantee a robust, long-lasting performance for your vessel.
Our expert team is always here to assist you. We’re dedicated to providing dependable support, ensuring your complete satisfaction even after purchase.
Our integrated systems deliver all you need for seamless performance, ensuring your boat runs reliably and efficiently from the start to the end.
System Tour
Calculated the exact power the Mira needed for best use.
Advised on the optimal placement of all system parts.
Provided professional installation of the complete system.
Offered support and service after system delivery.
Discover our range
Up to 11 kW
Voltage
48 V
Speed
1500 rpm
Up to 20 kW
Voltage
96 V
Speed
1500 rpm
Up to 30 kW
Voltage
96 V
Speed
1200 rpm
Up to 40 kW
Voltage
168 V
Speed
1500 rpm
Up to 60 kW
Voltage
358 V
Speed
1500 rpm
Up to 90 kW
Voltage
358 V
Speed
1500 rpm
Up to 130 kW
Voltage
563 V
Speed
1500 rpm
Up to 200 kW
Voltage
716 V
Speed
1500 rpm
Explore our products to find the perfect electric solution for your boat, or contact us to discover how STOK Electric can power your journey forward.
Understanding STOK Systems
A hybrid system combines an electric motor with a diesel engine or generator. It allows vessels to operate fully electric at low speeds and switch to diesel for extended range or high-power demands—offering flexibility, efficiency, and redundancy.
STOK Electric offers two configurations:
Parallel hybrid systems: 10–200 kW electric motor combined with diesel engines up to 900 hp.
Serial hybrid systems: electric propulsion only, powered by batteries and supported by generators up to 200 kW.
Parallel hybrid: Best for vessels needing high power and speed, like fast motorboats or commercial workboats. Combines diesel and electric for flexibility, fuel savings, and redundancy.
Serial hybrid: Ideal for low-speed or silent operation vessels such as ferries or sailing yachts. Uses a diesel generator to charge batteries, with only the electric motor driving the propeller, enabling efficient and quiet cruising.
Hybrid systems are ideal for motor yachts, commercial vessels, ferries, workboats, and even classic sailing yachts. They’re especially valuable for operators who need electric operation in ports or nature reserves, but also require long-distance capability.
Yes. Our hybrid systems are designed for seamless retrofitting. We offer full engineering support, from propulsion studies and space optimization to installation and commissioning. The compact and modular design simplifies integration into existing engine rooms.
For parallel hybrid systems, the electric motor typically provides between 30% and 50% of the diesel engine’s power required for nominal cruising speed. In serial hybrid systems, the generator is sized at approximately 40% to 50% of the electric motor’s power to efficiently meet the vessel’s nominal energy consumption.
Hybrid systems reduce fuel consumption, noise, and emissions. They offer silent electric cruising, lower maintenance costs, and more efficient energy use. For commercial fleets, this translates to significant operational savings and environmental compliance.
Yes. Our systems enable zero-emission operation in regulated areas. Whether fully electric or hybrid, we help ensure compliance with national and international standards, including ES-TRIN and upcoming emission regulations for inland and coastal vessels.
Our integrated control system makes switching seamless. Operators can choose the optimal mode manually or rely on smart automation based on speed, load, or battery state of charge—ensuring efficient and intuitive operation.
Battery charging can be done via shore power, onboard generator, or even solar. Our bidirectional converters allow flexible energy flow, making the system adaptable to your operational profile and available infrastructure.