Well that's analogical reasoning at work. Physics would remind you that drag is proportional to velocity squared, so going say 3x faster would encounter 9x more

Well that's analogical reasoning at work. Physics would remind you that drag is proportional to velocity squared, so going say 3x faster would encounter 9x more resistance over 1/3rd the time for an energy requirement 3x more than the slow boat. That's back of the envelope, but it's in the ballpark. Going faster costs more.