Boat porn of a 25 Seafari beasty

bigfluke · #1 10-15-2007, 07:47 PM

We tested the Seafari at weights from 4200 to 7400 lbs and with lcg's from 27% to 37% so handling isssues happened under many different circumstances. Our first tests were to develop a novel drivetrain with a 480 hp Yanmar and Weismann surface drive and we achieved 45+ knots @ 7400lbs. Current test configuration is with 300 hp Yamaha outboard on a Porta bracket. Our focus has been to move lcg as far forward as possible to improve pitch behavior without compromising following sea handling. Our hydrodynamic tricks to the hull bottom have been focused at reducing the increased drag which comes with a forward lcg. We have already yielded a 3+ knot improvement in speed and expect to see +5 knots on the next experiment. The info that Moesly had intended a ballast system makes a lot of sense from what we've experienced in running the boat with lower and further forward lcg. The basic boat has outstanding seakindliness at all headings when weight and lcg are dialed in. When we finish all of our research we expect to see a 15% improvement in speed/power and elimination of the handling problems that are inherent in many narow, deep-v hulls with fine entry. I consider Moesly along with Hunt, Hickman and Lorne Campbell to be creative innovators who have made major contributions to planing hull technology while achieving balanced and producible designs. I am delighted to have learned that Moesly planned an integrated ballast system which would have eliminated the sub-par performance issues with the Seafari. I'm sure if he had continued the development of this boat it would have truly been an outstanding performer and benchmark for its size.

NoBones · #2 10-15-2007, 08:55 PM

Quote:

Current test configuration is with 300 hp Yamaha outboard on a Porta bracket.

Scott Porta's shop is in Edgewater FL. close to Everglades Boat and Boston Whaler.
He has a heck of a shop and does nice work. Scott has always
been innovative in the marine industry.
You would be surprised at the amount of boat manufactures
in Florida alone, currently there are 556.
Alot goes on here that few even realize.
I love being a Florida Cracker.....

See ya, Ken