NYOB--
Most boats in that size range don't plane until 18mph. Your "cruise" speed
is just 1 mph over planing speed?

df--

I'm new to powerboatinig, so bear with me.

I thought the most efficient speed for a boat was whatever it took to
get on a plane and stay there without excessive trim.

If that's true, isn't cruising speed the same as the most efficient
speed? If not, how else would one determine cruising speed?