Hi Dave

i want to go work with schottels or voith schneider propulsion

i just want build a modern tug so i can use it to tow

Hi steve
Do you have a pic of the tug?
I found this web site https://www.wartsila.com/encyclopedia/term/kotug-rotor-tug
which explains the type and has a line drawing.
Looks an interesting project. Do you have a source for the driving mechanisms?
Dave