>motors and perhaps somekind of RF stage. Two turbines go through the boat
>from bow to stern, sucking in water from the front of the boat and spitting
>it out at the back. Instead of a rudder I plan on having a sideways

        Do you know a turbojet ship? It uses the same arrangement you are
planning, but with the output of the water directionable. Eg: You have a
flex tube, and after an "escape" for the water. This escape you can turn
left and right. It does tight curves, and has lots of eficiency.

Down here we call them "jetboats" :-)
We * invented them!




RM

* (well - a NZ farmer did).

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