1. Pascal, Jul 5, 2014

   #21

   

   Pascal Senior Member

   Joined:

   Feb 29, 2008

   Messages:

   8,546

   Location:

   Miami, FL

   Of course rom has a direct impact but the biggest impact is when the boat reaches hull speed. That's where you have to burn a lot more fuel to gain very little speed till the boat is on plane. That s what really matters, understanding that once you reach hull speed, either you get the thing fully on plane or you stay at hull speed.
2. dennismc, Jul 5, 2014

   #22

   

   dennismc Senior Member

   Joined:

   Jan 29, 2009

   Messages:

   1,177

   Location:

   Vancouver BC

   The 1400 rpm and 20 gph is spot on for my 12 71"s we are just slightly over hull speed at that point about 10kts on 66 ft w/l
3. captainb, Jul 6, 2014

   #23

   

   captainb New Member

   Joined:

   Apr 6, 2014

   Messages:

   28

   Location:

   London

   Thanks for everyones replies, the information is quite useful

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