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Drakkar – Bât C
2405, route des Dolines – CS10065-06902 Sophia-Antipolis Cedex FRANCE

Archive for the ‘Conversion Stories’ Category


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
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