Thank you for your thoughts. There seem to be a very few displacement motorboat designs (pocket cruisers) in particular in 16-18 foot range....
Thank you for your input. It is hard to say if one can trust Torqeedo data but they claim that their 1000W motor is equivalent, in propulsion...
I have just finished building a 12 foot classic style (full length shallow keel) sailboat from Scruffie Marine – epoxy and ply...