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Drakkar – Bât C
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Sorgenfri is the name of Jörgen’s traditonal norvegian boat, recently put on the water.

Sorgenfri on the water tag

This boat has been “handmade” according to traditional norvegian know-how. (builder Mr. Øivind Andersen at Rød Båtbyggeri http://www.roedbaatbyggeri.no)



But Jörgen is a man of the 21th century, fully concerned with pollution damages and moreover, he loves the calm and quiety of sailing, talking with his friends and family while enjoying the beautiful views of the norvegians coasts from the water. For all these reasons and also because he has enough to do with his job and didn’t want to work on a motor during his free time, he chose an electric propulsion system, that he hides under the coffee table of Sorgenfri.

SORGENFRI hand built traditionnal boat in process

Sorgenfri Table hides motor and batteries



Light, quiet, odourless, safe and secure, maintenance free, reliable, Sorgenfri is 100% pleasure for its owner and family.

Moreover, Sorgenfri shows that it is possible to mix together tradition and clean technology, taking care of environment and personal finances…

Sorgenfri Motor and batteries


Photo source: owner of Sorgenfri


STR Europe Presents Sunny Ray the magic Catmaran conversion story by electric Yacht

The Magic Catamaran

Here is the story sent by our partner Electric Yacht, North America’s number one builder of recreational electric inboard propulsion systems. Read and dream how amazing it is to navigate quiet, green and clean!

Manta 38: The Magic Catamaran

If you’re in St. Thomas, U.S. Virgin Islands, ask about Sunny Ray, a Manta 38, and Cap’n Dano. People say she’s a magic boat!
Sunny Ray and her crew are doing great. We have had almost 6,000 miles on our GPS odometer and still perfect performance of the Electric Yacht motors! Top speed under power is 7.5 knots in our 38ft Manta Catamaran with two blade Flex O Fold 15×10 props on shaft drives. The previous fixed 3 blade props were great for regeneration power, but we prefer the folding props which give much better sailing performance. When the sky is clear and the sun is hitting our solar array we can power at 2 knots without using the battery bank! When the wind is light, true wind at 7 knots, we can motor sail with 6 knots of boat speed only using 10 amps on each motor. Our generator has only used 100 gallons of diesel fuel cruising for two years!
Right now we have a bunch of guests visiting us at St. John, USVI. Guests love the almost silent propulsion, no noticeable heat under the beds where the motors are, no diesel smell, etc. We don’t run the generator to get underway and start sailing. By the time we need the motors back on to pick up a mooring ball, the batteries are charged up by the sun array.
Thank you for providing us with magic propulsion!
Want to know more about Electric Propulsion: follow this link
8,000 miles later…
 Many cruisers have saildrive failures and wonder why they put up with the high maintenance crap. If it can be installed by a do-it-yourself type person, that’s huge. How does it make a watertight seal in the saildrive well? Looking at your drawings it appears that you intend on eliminating the saildrive doughnut seal and gasketing your new drive directly to the fiberglass rectangular hole. There are some big benefits to this strategy. No longer will there be a large well under the doughnut seal filled with sea water and oysters. This removes considerable weight and other trouble. When pricing, consider what a cruiser would have to pay for a new saildrive from Volvo. If a new Electric Yacht motor/drive combo is comparable in price to a new Volvo saildrive you will find buyers. Even skeptical diesel lovers are impressed with the system on Sunny Ray, and are jealous that I get to play, while they work on their engines.
Excited about this conversion and want a free study for your project? Follow link here and fill up the form.

Some technical details…This is the front view of the 100ibl…
and the side view.
The output shaft connects to your
existing prop shaft…
You don’t even need to haul the100ibl-front_200x252
boat…a Big savings!

System Includes:

  • Brushless 48VDC, 100A Motor, Motor Controller and Belt Reduction Assembly
  • Digital Battery Monitor
  • Throttle Quadrant and Keyswitch
  • Shaft Coupling
  • Battery Fuse
  • Master Power Switch
  • Solenoid Switch
  • Mounting Hardware


Once again, STR Europe was present at the Yachting Cannes Festival, held from September 8 to 13, 2015



It was a honnor for STR Europe to received the Environmental UIM Award for Innovation from the Union International Motonautique.


The UIM (Union Internationale Motonautique) Executive Committee has selected STR-Europe as the winner of the 2014 UIM Special Mention for Innovation for the project STR Europe-Lithionics Batteries.

The Award Giving Ceremony was at the Sporting Monte-Carlo, Monaco, on Saturday March 7th, 2015.

This award is for STR Europe an acknowledgement of the high quality of the engineering, technology and services as well the outstanding innovation results of our products, for clean, efficient and environment-friendly marine propulsion systems and energy storage and its application to the Yachting and Boat Industry.


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More than 1300 exhibitors and over 21 000 visitors at the Amsterdam RAI for the Marine Equipment TRADE Show.

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During the MONACO Yacht Show 2014, STR invited its partners from the Superyacht Industry for a Cocktail Lunch at the Yacht Club de Monaco.

During the event, our director, Mr Carmine Biancardi presented to our guests how electric propulsion can be use and how it is now available for yachts and super yachts.


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La déferlante des nouveaux navires “écolo”

Par Erick Haehsen et Eliane Kan


Article Tribune (…)

Deux fois plus vite avec moins de carburant






Le marché des navettes rapides pour le transport des passagers attire également STR Europe (Sustainable Technology and Research), un groupe d’ingénierie navale spécialisé dans la propulsion électrique et hybride. Créé il y a trente ans, cet acteur européen réunissant 15 personnes réalise environ 1 million d’euros de chiffre d’affaires en 2013, dont 50% sont consacrés à la R&D.

Dans le cadre du projet Déesse, STR Europe a développé une première navette fonctionnant, comme les voitures hybrides, au diesel et à l’électricité, grâce à des batteries au lithium. Fort de ces développements qui ont associé Éca Électronaval, Moteurs Baudouin et SupMéca, le groupe a sauté le pas avec une première navette, cette fois-ci tout électrique à destination de la Guadeloupe. D’une capacité de 50 passagers, celle-ci possède une autonomie d’une quinzaine d’heures grâce à ses batteries Lightionics rechargeables.

« Nous avons conçu cette navette en association avec un chantier turc faute d’avoir trouvé un partenaire en France », indique Carmine Biancardi, directeur de STR Europe.


Complet article



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