Manon is a fully open source electric boat I designed and built.
This is some (rough) documentation so others can replicate this an also build their own.
The motor is based on a old Epropulsion outboard, with a Flipsky 65161 motor. For this you need a 3D printable mount To replace the tiller (throttle) electronics you need to use some additional 3D printed parts For the Vesc Express I designed a small waterproof case.
Here is the wiring scheme for the electronics:
You can find the matching code for the various ESP32's in the ESPHome folder.