Glider Boat Plane What length and weight must my boat be to achieve 50km/h with a 39-HP outboard Diesel?
I am currently building my own boat. My plan is to find an aluminium hull, attach a 39-HP Yanmar outboard Diesel to it (available in Australia, in case you wonder if I can't spell "Yamaha" properly or got my facts wrong because yes, it really is a diesel, too), and put my own superstructure on it. It's supposed to be a commuter boat, a glider, with which I hope to cover 12km in an inlet every morning and night. It's salt water, usually calm as a lake, but can have a wind-induced chop of up to 1m at times.
I'm grappling with the question now whether I should get the smallest possible boat (3.3m) or go a bit bigger to get better planing ability (up to 6m is what I was thinking).
Thanks for your help!
The longer the waterline the faster the boat will go. Also I would go with the larger size for the times when there is a 1 meter chop.
