On 7 Sep 2006 06:26:06 -0700, "DanBlack" wrote:

Does anyone know which way the props should rotate on a catamaran. In
or out?????

Assuming counter rotation, the most common configuration is for the
props to rotate outward, ie, when viewed from astern the stbd prop
turns clockwise, and the port prop counter clockwise (with forward
motion). I believe the reason is that the thrust asymmetry is
partially offset by propwalk when operating with a single engine.