i posted a few weeks back on some sail conversions done by Atkins on the seabright skiff hull, but not much information was forthcoming. Boat hulls such as the New Jersey Sea Skiff dont exist on this side of the Atlantic,so it is hard to come up with first hand experience of this type of hull shape and its performance as a power boat,or indeed,under sail.
Atkins has drawn a 19ft motor sailor, called "surprise" which he states will do 15mph on an 8hp motor.
The largest 28ft "two brothers",with a 12hp motor is reckoned to be 11mph.
Neither of these boats can be considered to fall into the normal displacement or LWL speed predictions as is normal for a displacement hull.
My question is,and im hoping someone out there has experience with a seabright type hull,is if these speeds on these HP predictions can be called reliable. Obviously weight issues etc etc come into play,but i find it hard to believe that 12 hp will push even a semi displacement hull this size at this speed.
I have read that Atkins was sometimes a little optimistic with his speed calculations. Cheers