We regret to have very little information her yet.
Especially about the propellers, it would be very nice to have some sustainable facts, like materials, speed, dimensions, pitch, number of leaves, and most of all experienced pros and cons with different solutions. Please, share your knowledge with us on firstname.lastname@example.org.
Some data is mentioned on the page of the individual boats, like the Molly II and the Henrik Ibsen.
New hydraulic motor for a Baystar january 2015
Hydraulic motor being mounted
Ready to go
6 knots achieved, hurrah!
The plan is to have the most important information here, like dimensions of spare parts and where to get what if anything breaks down.