On 3/5/2016 6:15 PM, Cliff Vaughan wrote: Cliff, If I remember correctly the difference between a sailboat compass and a power boat compass is in the damping inside the bowl. Power boats bounce around and turn rapidly. Sailboats don't. So, powerboat compasses have far more damping in the compass bowl to keep the compass stable under powerboat driver shenanigans. Connie

So what is the difference between a sailboat compass and one for a powerboat? I am considering this Ritchie Explorer S-53G Compass for my M-15