[Blue_Heron]

Thanks, Hermco. Very informative.

I learned two important things. First, 33CFR183.53, which establishes requirements for horsepower ratings and rating plates for outboard boats, does not apply to monohulls over 20' in length, like my Seacraft Industries 20. If it *did* apply, the formula in the regulation would allow a maximum data plate horsepower of 185 for this hull. Since 33CFR183.53 does not apply to my hull, I guess I can now tell my insurance agent that the engine on my boat doesn't exceed the max horsepower rating. Ill post if it doesn't fly...