Yes, I have totally forgot about this but two friends of mine drove a
V-bottom boat powered with a NSU Rotary (Wankel) to victory in the UIM Class R-3. (Max 2 liter inboards)
Here is a few pictures of Krusenstierna and Zetterstrom´s green Joker boat # 115 powered by a NSU Rotary – (Wankel)
Red arrow.
This boat was used in many races in Sweden over a few years and was doing very good.
Pictures by Wilfried Weiland