Propulsion systems for boats, namely, power boats, and components and fittings therefor, namely, stator vane, nozzle, and intake grate to be fitted to the intake of the propulsion system for a boat in order to stabilize the intake flow of water and prevent foreign articles from entering the propulsion system and becoming entangled with moving parts; engines and motors, namely, out board and marine engines and motors, propulsion engines for boats, marine propulsion engines, marine transmission...