I believe this is where a pad-bottom boat makes a difference. To get speed, you want less drag (minimal footprint), What you are describing is increased wetted surface to help with stability, but you are increasing drag. A conventional V has nothing to balance on once it goes fast enough to lift off the chines and falls from side-to-side - the chinewalk you describe. A pad bottom gives you the horizontal surface below the chines to balance the boat on at high speed, but this does take skill. The Velocity is the perfect example of a pad bottom working correctly at high speed...ever see the video where the 30' Velocity breaks 100 MPH? It's Steve Stepp/Dick Fullam running a boat called Still Crazy balls to the wall and probably the finest example of NOT ONLY making a boat go fast, but how to drive at high speed.

i like the three man bolster seating in the Jet-Cat 16http://www.offshoreonly.com/forums/a...honyb61002.jpg

Reply:
I am not sure what you disagree about I did not find the answer to the question and have a hard time deciphering your post.

Sure a lot of nice photos of vintage, one off, and old time race boats of the past were posted... but they were irrelevant to the question posed by the author of this thread.

I can only assume from your post that the Glenn Curtiss & Company produced the first stepped V-Bottom. If so where did you get the information?

Where can I read about it and how they developed their hull from merely having chines to stepping the bottom.

KAP

P.S. Spin in or out depends on what hull you have, driving style and your set-up it's not like a master key or one size fits all conclusion.

Are you!

So that why my non step with outward rotation rides and handles like a dream. Thanks T2x, I learned something today.

Please elaborate on how you find a step to improve the ride in the ocean/rough? I am sure you've been in a step that rode better than a traditional V in the rough, but I would be nearly positive that would be due to other factors.

"During the course of his hydroaeroplane and flying boat development, Glenn Curtiss incorporated design innovations
that made the seaplane a practical reality, beginning with the enclose hull, covered with fabric for strength and
water tightness. Curtiss, with assistance from Royal Navy engineer Lt. John Cyril Porte, further enhanced the ability
of waterborne aircraft to get off the water by constructing a mid-way "step" on the bottom of the float or hull.
Water has adhesive qualities, especially when running over a curved surface, and early seaplanes had difficulty
getting "unstuck" from the water, especially in calm seas. The addition of the step helped break up the water flow
under the hull enabling the flying boat to get airborne more easily. Curtiss also added breather tubes to the flying
boat hull. These were small copper tubes that ran from the inside of the hull to the undersurface step to relieve
the low pressure under the hull and assisted the aircraft in becoming airborne."

http://www.nasm.si.edu/collections/a...d=A19490022000


I recommend contacting:

The editor and user groups @ http://earlyaviators.com/eporte.htm
The Library of Congress @ http://www.loc.gov/index.html
Smithsonian National Air and Space Museum http://www.nasm.si.edu

To further assist your research.

Best regards

RLJ676:

Why don't you elaborate on which current production offshore boats do not have a step in the bottom----uhhh Fountain, Hustler, Baja, Laveycraft, Phantom, Donzi, Cigarette all stepped V-Bottoms--- this list is not inclusive you could get more names in the builders forum section.

Oh they put them in because they are gimmicks flippin give me a break---Payaso.

KAP

Steps on a baja?

Yes....mine has a step going down into the cabin

Thats just funny!