Numarine Yacht sets a new standard in marine sustainability
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Diesel-electric hybrid propulsion offers a practical and effective way to reduce the environmental impact of marine operations while maintaining operational efficiency and flexibility. It represents a significant step towards a more sustainable and environmentally responsible maritime industry.
Yacht builder Numarine is based in the greater Istanbul area in Turkey. They build explorer-style motor yachts from 22m to 40m. Annually, Numarine manufactures between 10 and 15 boats for customers in Turkey, Europe and the USA.
Numarine’s 30XP superyacht, made her world debut at the Cannes Yachting Festival in September 2024, marking a significant milestone for the Turkish shipyard. Notably, the 30XP is the brand's first model featuring diesel-electric hybrid propulsion, setting a new standard in sustainability.
Co-designing and engineering vessel hybrid propulsion
Energy Solutions has been designing and building electrical systems for Numarine for 15 years and it was fantastic for our Design and Engineer teams to work on this latest XP model. We were also able to send a commissioning team to assist the shipyard Numarine building crew in Turkey to test their first Electric-Deisel hybrid propulsion vessel.
Numarine had designed a 30M motor yacht with a very efficient hull form to offer an electric propulsion option along with silent overnight power. They have been offering 'hybrid' hotel power for several years, and the 30XP was a logical extension.
“This might be Numarine's first hybrid propulsion yacht, but we have been gradually expanding the hybrid functionality of their yachts for many years. Moving to a full hybrid system was the logical next step, and it has been a pleasure to be part of that.”
Daniel Cox, Engineering Technical Manager, Energy SolutionsThe hybrid propulsion system leverages substantial battery banks and four variable-speed generators to power both electric propulsion and onboard electrical systems. This design afforded the vessel's engineers exceptional packaging flexibility, enabling optimised space. The modular system allowed designers to optimise space and weight distribution by moving equipment into different areas of the boat in a way that could not be done with conventional systems.
The Energy Solutions team spent many months co-designing Numarine’s first-ever hybrid diesel-electric explorer and engineered a class-approved system using Danfoss Power converters, Danfoss Motors, MG Energy Battery Storage and Deif controls.
Achieving groundbreaking electric propulsion for super efficiency and silent running
The first boat was built with 600 kW of electric propulsion to achieve her design speed. The yard used multiple sea trials, utilising the trip from Turkey to the Cannes Boat Show, to collect data on all aspects of the vessel's operation.
The data showed that the combination of a super-efficient hull and the properties of electric propulsion (high torque and instant power availability) meant that the boat needed only 400 kW of propulsion power (200 per shaft).
This is a great achievement in energy efficiency and sustainability. The hybrid vessel now operates with generators running only when required. And in addition, when the engines run, they operate at their most efficient load/speed.
Numarine’s first-ever hybrid diesel-electric explorer, the 30XP, neatly fills a gap in the Numarine exploring range and, thanks to the diesel-electric hybrid propulsion, it has everything it takes to set a new path and the trend to follow.
Why is hybrid propulsion setting a new standard in marine sustainability?
Diesel-electric hybrid vessels advance marine sustainability through significant advantages. They reduce emissions by optimising fuel consumption and enabling zero-emission electric modes. Efficiency is enhanced through optimised engine loads, regenerative braking, and flexible power management.
Low-Impact cruising for environmentally sensitive areas
One of the key benefits of the Electric-Diesel hybrid propulsion system is the ability to operate silently and emission-free when manoeuvring in and out of harbour. Running in electric mode not only reduces noise and vibration, making for a more pleasant experience for those on board and nearby, but also meets the increasingly strict environmental regulations found in many marinas and port authorities. This is especially important in areas where access is limited to low-emission or low-impact vessels, allowing owners greater freedom and flexibility in where they can berth and operate.
For the vessel owner, this means quieter, cleaner arrivals and departures, less disturbance to marine life and coastal communities, and the ability to access protected or eco-sensitive areas that are off-limits to traditional diesel-powered craft.
Hybrid Marine Propulsion's sustainable advantages:
Operational flexibility improves with enhanced manoeuvrability, reduced noise, and system redundancy. Furthermore, these systems provide a platform for future technologies, better compliance with regulations, and a pathway to full electrification.
• Cleaner: Reduced emissions & zero-emission operation.
• More Efficient: Optimal fuel use & energy recovery.
• More Flexible: Enhanced manoeuvrability & quieter operation.
• Future-Ready: Adaptable to new technologies & regulations.
Project implementation:
• Custom Energy Solutions control and distribution cabinets
• Danfoss Power converters
• Danfoss Editron Motors
• MG Energy Battery Storage in custom enclosures to meet class fire protection requirements
• Deif control and HMI systems.
• MASE variable speed DC generators
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