>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. For=
 filtering, you can use a "windshield wiper filter" - You can cover the=
 front of the boat with a tight mesh, and put a kind of "wiper" in front of=
 it. If something cloggs the water input, the wiper will clean it out,=
 throwing the trash to the sides. It's a bit complicated at first, but you=
 can understand the concept.

        Another good way to move it is using air jets. But you'll have to have=
 lots of power. An aeromodel fuel engine is well suited for this=
 application. Keep the gravity center low, and everything will work.


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        All the best!!!
        Alexandre Souza
        xandinho@interlink.com.br

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