The closer to the maximum speed the boat gets the harder it is to increase the speed.
Speed Boat is quite a generic term, but essentially it means a small boat with enough power that it can "plane".
i need to know for a report NOW! so i will tell when i knowa boat speed is measured in knots. one knot is 1.1 miles an hour
you usually judge boat speed depending on its size. if its a smaller boat then it would be by MPH. but for bigger boats they go by knots
Get a bigger engine. Or keep current engine and reduce drag