Since 2023 we have had a 15+5Kw WaterWorld inboard motor in our historic Vechtzomp of 14m long (approx. 6.5ton). This engine is very reliable and easy to operate. We do approximately 250 sailings per year and the silent sailing is truly wonderful. For price reasons, we opted for lead-acid batteries at the time. However, lithium is a much better option and the additional cost is now not too bad.

I have been using the 20KW version in the baltic sea on my 34ft ketch since last year (2024) and it is just awesome! You get the silence of sailing while motoring, making trips on engine power more enjoyable than ever before.

Regeneration also works great: I am getting around 100-150 Watts at 5.5-6knots speed even with the inefficiencies due to the angle of the shaft drive system compared to the water flow!

We are very happy!

All came very well explained, boxes with labels, mounting plug and play and once running it was a pleasure!

No vibrations and with enough power and silence, sense of good balance between the Waterworld system and our boat.

Thank you!

After sailing 3500 miles from Kiel, Germany to Lofoten, Norway and back with a Vindö 40 with a 10 kW inboard engine, I can only say: it works perfectly!

In my Tartan 33, I installed and operated a 10kw direct drive and travelled over 2,000 miles over two years with it. One trip was 700 miles. The direct drive is extremely quiet and with the right propeller the air cooled motor simply does not overheat.