Thank you for clarifying that. I always thought that "hull speed" was a speed beyond which that hull could not possibly go, even with more power added.
This is one of those impossible to kill falsehoods that is debunked about once of twice a year. We've been over this topic about 10 times the last 7 years so do a search and learn what is really true.
Don't believe 80% of the sailing books out there. They all got it all wrong.
Wouter
Wouter Hijink Formula 16 NED 243 (one-off; homebuild) The Netherlands