I know some of you are into sailing.

I have invented a new bi plane catamaran sail boat.
The advantage is for a given sail area the over turning
moment with two main sails is less.

This version is a water ballast catamaran.
It use two stock MacGregor water ballast 26 foot  sail boats
that can do 23 Kts with out board motor power.

You empty the water ballast to reduce the weight and then they
will plane when powered by outboard motors.

When sailing on a reach or upwind you ballast the lee boat.


When sailing down wind you empty the water ballast in both boats
for mare speed. You hoist a sqaure sail between the two mast for
down wind.

With two mast you don't need a heavy box cross beam. Two ball jointed
struts and an X cable is all you need.

Locking the boats together It is all done with X shrouds and ball
jointed struts. See the sketch.

Paul Lamar

http://www.macgregor26.com/

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