Uncompromising electric power for your navigation
Weenav marks a decisive turning point in the nautical industry with its inboard engine ARION. The ARION demonstrates that technological excellence and environmental respect are no longer antagonistic. With a range peaking at over 500 horsepower, we are redefining the standards of inboard electric propulsion.
Weenav, architect of the electric nautical revolution
Our mission is clear: to design 100% electric propulsion solutions that match and exceed the performance of thermal engines, without the slightest compromise. With the ARION (inboard) and KRONOS (outboard) ranges, we prove that the navigation of tomorrow combines power, efficiency, and sustainability.
A technical architecture that shatters standards
Exceptional performance and efficiency
The ARION engine develops powers of up to over 500 horsepower, with an engine efficiency reaching 97%. This remarkable efficiency transforms every kW into pure propulsion, where thermal engines lose a considerable amount of energy to heat and friction. Maximum torque is available instantly from the start, offering unparalleled steering responsiveness and absolute smoothness in all phases of navigation.
ARION can also be configured as a series hybrid, thus offering maximum flexibility to meet all navigation profiles. This option combines the advantages of electric propulsion (silence, instant torque, zero emissions at anchor) with the extended range of a supplementary thermal generator.
High voltage automotive excellence technology
The ARION operates with a high-end electrical architecture of 400V to 800V, usually reserved for the flagship models of the automotive industry. This cutting-edge technology ensures maximum energy efficiency, optimal thermal management, and sustained performance over time.
LFP Solid State Batteries: exceptional safety and longevity
At the heart of the ARION system: LFP SS battery modules (Lithium Iron Phosphate Solid State), a revolutionary chemistry that guarantees absolute safety. Non-explosive, non-flammable, these batteries withstand extreme conditions from -20°C to 60°C.
With a capacity of 6,000 full charge cycles, these batteries have an estimated lifespan of 30 years based on 200 annual uses. This exceptional longevity frees you from technological obsolescence and places your investment in a very long-term perspective.
At the end of their life, these modules are 97% recyclable, placing your navigation in a decidedly sustainable and responsible approach.
Ultra-fast charging: liberated autonomy
Range anxiety is a thing of the past. The ARION adopts the standards of ultra-fast charging Combo CCS, accepting power levels from 200 kW to 350 kW depending on the configuration. Thanks to a charging capacity of up to 2C, you go from 10% to 90% energy in just 30 minutes. It's faster than refuelling, odourless, hassle-free, and risk-free.
Reliability 100 times greater: simplicity serving performance
Mechanical simplicity is the main asset of ARION: 100 times fewer parts than a thermal engine. This streamlined architecture results in 100 times greater reliability and almost non-existent maintenance costs.
Where a diesel engine requires heavy maintenance every 100 to 200 hours (oil changes, filters, turbines, belts), the ARION only needs its first service after 10,000 hours of operation. This near-total availability of your vessel and this drastic reduction in operating costs transform your ownership experience.
Certified IP67, the ARION guarantees total waterproofing up to 1 metre deep for 30 minutes, facing all maritime conditions with absolute serenity.
Smart connectivity by GARMIN
The partnership with GARMIN propels your user experience to new heights. The EmpirBus system centralises all navigation and energy management data on an intuitive touchscreen interface.
A dedicated app allows you to monitor the charge in real-time, plan your navigations accurately, and even preheat your boat remotely. Intuitive piloting, total control, and essential information for safe and controlled navigation.
Retrofit: your most effective decarbonisation lever
The concept of retrofit, or remotorisation, is a pragmatic and circular response. The average lifespan of a hull can reach 40 years, replacing only the heart of the ship constitutes the act of the most effective decarbonisation.
This approach allows for the preservation of the aesthetic heritage and the fittings of your boat while radically eliminating its operational footprint. Retrofitting can reduce greenhouse gas emissions by 56% compared to building a new unit. It is a second life, more noble and cleaner, offered to your vessel.
ARION: The professional solution par excellence
The ARION propulsion adapts to a wide range of vessels, from pleasure boats to the most demanding professional applications.
For maritime professionals, ARION represents a major strategic asset:
- Shuttles and marine taxis: The silence and absence of vibrations significantly enhance passenger comfort, while reduced operating costs boost profitability
- Port workboats: Guaranteed access to low emission zones and exceptional reliability ensure maximum availability
- Excursion and observation boats: Absolute silence allows for a respectful approach to marine wildlife without noise disturbance
- Training boats: The simplicity of handling and the predictability of electric torque facilitate learning
- Rental fleets : The almost non-existent maintenance (first revision at 10,000h) and ease of use optimise rotation and reduce downtime
The modularity of the batteries allows for precise adaptation of energy capacity to the actual usage profile, making ARION the most flexible and cost-effective solution for professional operators.
A complete range for every need
Weenav offers an extensive ARION range, from 50 to 500 horsepower, each benefiting from the same technological excellence. Whether you are looking for efficiency for daily navigation or power for sporty sensations and high speed, we have your solution.
THE NEW SEASON 2026 OFFER: Your moment has come
Discover the ARION 2026 !
Exceptional offer until 28 February 2026 : high-performance electric motor, optimised battery. Installation, training and optimisation visit included.
Drive further, stronger and more easily with ARION.
This turnkey configuration guarantees you a smooth transition to electric, with expert support from our teams at every step.
Take action now
The electric revolution is no longer waiting. With ARION, you are not just adopting a motor: you are investing in the future of navigation, in your comfort, in the preservation of the oceans. You join a community of visionary sailors who have understood that performance and responsibility now go hand in hand.
The electric navigation is no longer a niche for ecology enthusiasts, it is a logical and high-performing evolution of boating. The ARION proves that power and speed are no longer incompatible with respect for ecosystems.
By combining an unprecedented mechanical reliability, intelligent energy management and a charging speed based on automotive standards, electrification is establishing itself as a solution that is not only virtuous but also more cost-effective and enjoyable to use.
Contact Weenav today and discover why ARION represents much more than just a motorisation: it is your passport to liberated, powerful and respectful navigation.
Weenav - Pioneer of high-performance electric propulsion
ARION: The reference for electric in-board propulsion
Published on 29/01/2026
Editor: Sophie Castelain