The high power density Flat wire design propulsion motor with inverters, serving the application of Electric boat. This series of products are compact in design, outside coating treatment done to avoid corrosion, resistant to high temperature and high humidity salt fog environment, with high reliability, low noise, low vibration and zero emission performance advantages. It is suitable for large sailboats, catamarans, small passenger ships and cruise ships, commercial work ships and large inland cruise boats or large barges. The application of high-precision sensors and software control algorithms can be applied to autonomous intelligent boats.