Uncompromising electrical power for your navigation
Weenav marks a decisive turning point in the nautical industry with its ARION in-board motor. The ARION shows that technological excellence and environmental respect are no longer antagonistic. With a range peaking at over 500 horsepower, we are redefining the standards of in-board electric propulsion.
Weenav, architect of the electric nautical revolution
Our mission is clear: to design 100% electric motorization solutions that match and exceed the performance of internal combustion engines, without any compromise. With the ARION (in-board) and KRONOS (outboard) ranges, we are proving that tomorrow's navigation combines power, efficiency and sustainability.
A technical architecture that pulverizes standards
Outstanding performance and performance
The ARION engine develops powers of up to over 500 horsepower, with a engine efficiency reaching 97%. This remarkable efficiency transforms each kW into pure propulsion, where internal combustion engines lose a considerable part of energy in heat and friction. Maximum torque is available instantly from the start, offering unparalleled steering responsiveness and absolute fluidity in all phases of navigation.
ARION can also be configured as Hybrid series, thus offering maximum flexibility to respond to all browsing profiles. This option combines the advantages of electric propulsion (silence, instantaneous torque, zero emissions at anchor) with the extended autonomy of an auxiliary thermal generator.
High-voltage technology of automotive excellence
The ARION works with a high-end electrical architecture from 400V to 800V, usually reserved for the flagships of the automotive industry. This cutting-edge technology guarantees 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 uses per year. 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, making your navigation part of a resolutely sustainable and responsible approach.
Ultra-fast charging: autonomy freed
Autonomy anxiety is a thing of the past. The ARION adopts the standards of Combo CCS ultra-fast recharge, accepting powers from 200 kW to 350 kW depending on the configuration. Thanks to a load capacity up to 2C, you go from 10% to 90% of your energy in just 30 minutes. It's faster than a full tank of fuel, without odor, without handling, without risk.
100x greater reliability: simplicity at the service of performance
Mechanical simplicity is the major advantage of ARION: 100 times fewer parts than a combustion engine. This refined 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 requires its first overhaul only after 10,000 hours of operation. This almost total availability of your ship and this drastic reduction in operating costs transform your owner experience.
IP67 certified, The ARION guarantees total watertightness up to 1 meter deep for 30 minutes, facing all maritime conditions with absolute serenity.
Smart connectivity by GARMIN
The partnership with GARMIN takes your user experience to new heights. The EmpirBus system centralizes all navigation and energy management data on an intuitive touch interface.
A dedicated application allows you to monitor the load in real time, plan your navigations accurately and even preheat your boat remotely. Intuitive control, total control and essential information for safe and controlled navigation.
Retrofit: your most effective decarbonization lever
The concept of retrofit, or re-motorization, is a pragmatic and circular response. Since the average lifespan of a hull can reach 40 years, replacing only the core of the ship is the act of most effective decarbonization.
This approach makes it possible to maintain the aesthetic heritage and layout of your boat while radically eliminating its operational footprint. Retrofitting makes it possible to reduce greenhouse gas emissions by 56% compared to the construction of a new unit. It is a second life, nobler and cleaner, offered to your boat.
ARION: The professional solution par excellence
La ARION motorization adapts to a wide range of boats, from pleasure boats to the most demanding professional applications.
For maritime professionals, ARION represents a major strategic asset:
- Sea shuttles and taxis : Silence and the absence of vibrations considerably improve passenger comfort, while reduced operating costs boost profitability
- Port work boats : Guaranteed access to low-emission areas and exceptional reliability ensure maximum availability
- Excursion and observation boats : Absolute silence allows a respectful approach to marine fauna without noise disturbances
- School boats : The simplicity of control and the predictability of the electric torque facilitate learning
- Rental fleets : The almost non-existent maintenance (first revision at 10,000 hours) and the ease of use optimize rotation and reduce downtime
The modularity of the batteries makes it possible to adapt the energy capacity precisely to the real use profile, making ARION the most flexible and the most profitable solution for professional operators.
A complete range for every need
Weenav offers an extended ARION range, 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 time is now
Discover the ARION 2026 !
Exceptional offer until February 28, 2026 : high performance electric motor, optimized battery. Installation, training and optimization visit offered.
Ride farther, louder, and easier with ARION.
This turnkey configuration guarantees you a smooth transition to electricity, with the expert support of our teams at each stage.
Take action now
La The electric revolution is no longer waiting. With ARION, you don't just adopt an engine: you invest in the future of boating, in your comfort, in the preservation of the oceans. You are joining a community of visionary sailors who have understood that performance and responsibility now go hand in hand.
La electric navigation is no longer a niche for ecological enthusiasts, it is a logical and efficient evolution of boating. The ARION proves that power and speed are no longer incompatible with respect for ecosystems.
By combining a unprecedented mechanical reliability, intelligent energy management and fast charging based on automotive standards, electrification is emerging as a solution that is not only virtuous, but above all more profitable and pleasant to use.
Contact Weenav today and discover why ARION represents much more than a motorization: it is your passport to free, powerful and respectful navigation.
Weenav - Pioneer in high performance electric propulsion
ARION: The reference in electric inboard propulsion
Posted on 29/01/2026
Editor: Sophie Castelain
