hp Ratio Help

[mrpike1973]

Hi asked this before but could not find it again. how do I figure what % a motor is compared to the plate rating meaning if the boat says 50 hp and you have a 25hp motor on it your 50% of the rating. how would it work if you have 6hp motor there is a formula Just examples here but I cant find it thanks

[aanderud]

The math is "actual" horsepower divided by "maximum" horsepower, then take the result times 100, and that's your percentage.

So in your 25 hp (50 max) example: (25 / 50) * 100 = 50%

Or in your 6 hp (50 max) example: (6 / 50) * 100 = 12%

Or 50 horsepower (with the same 50 max): (50 / 50) * 100 = 100%

[mrpike1973]

thank you very very much!!