I hate to say the most fun boat I have ever owned! I watched my kids grow up wakeboarding, skiing and all the good things that go with boating.

My boy is on the Florida State Wakeboarding team. Didn't even know you could do that in college.

Yes,

Im familiar with Schoell's design work...I was unaware that he did design work for AT. His lawsuit against Regal was actually used in a Admiralty law class that I took last year.

His design approach is somewhat similar to Lorne Campbell's when it comes to strake and chine angles for stepped bottom boats. Both prefer to run a lot of negative angle on them to help improve the turning charicteristics which is something most American designers do not do. The other approach which was patented by Mike Peters is using a ceterline tunnel at the keel between the aft most step and to add lateral resistance.

Depending on the Nav. Arch you ask it would probably be a pretty even split on who prefered which design from a hydrodynamics point of view.

Thats just that MC and Nautique elitism :evilb:

In all seriousness though 'bu builds a fine product and wasnt trying to knock the company just that a ski or wake boat is going to ride like chit because of the quick transition to a low deadrise surface.

Can I assume they also taught you what happens to the speed and hull efficiency as you add more steps?

That question is not really a simple one to answer because speed and hull effiiciency are going to be determined by the aspect ratio of the lifting area L/D, angle of attack of the step(s) and the L/B ratio of the boat. Assuming a well designed step matched to a properly sized boat a twin step boat will be faster and more efficient than the single step hull.

I don't blame ya...if I owned a MC I would hold on to my 86 Nautique as well....:evilb::evilb:

I do agree my Bu rides nothing like my beak...but it's a he'll of a lot cheaper to run :)

Things seem to be getting a little off topic.
If someone can afford a boat of any caliber it will not make them a knowledgeable operator of that boat.
AT is trying to cover some basics of warning an operator of possible issues if not operated properly. As stated sarcastically earlier, a person or entity can be held liable for absolutely anything these days.
Train and instruct the purchaser the best you can upon delivery and insure to the hill for what may/will happen eventually.

The warning sticker was from a Cig, AT was stating the differences in hull designs and or flaws...now the thread is back on topic for ya...

Curious as to the case studies they gave you. Also curious if 3 or 4 steps are even more efficient.

Here's one for you which sums up step hulls nicely courtesy of David Svahn:

"The stepped hull is viewed as two regular hulls following each other closely in the
water. The first hull follows the same theory as a normal planing hull since this one
meets a calm level water surface. The second hull does however not, as it travels in the
wake behind the first hull. Because of this, the shape of the wake has been studied for
different conditions like speeds and hull shapes."

Her's one for ya, kid, courtesy of Kobus Potgieter. The last sentence sums it up quite well!


http://www.navaldesign.co.za/article...s-%20Feb07.pdf