Breakthru Hull Design...

Very good looking boat!!! Can someone explain the "rising" hand-rails on the bow?

This boat was built for a guy living ten minutes from me. I have never seen it go faster than on the picture, but there are a couple of sister-boats with "normal" transoms and they are pretty fast and seems to go well. The shape of the double "sharkfins" on the fore deck are most likely to follow up the overall design theme.

With the American flag flying on the back I was under the impression that it was of American ownership. Nonetheless it is a gorgeous boat.

I would agree that the front middle "lifeline" rails are to follow the design aspects of the boat...they would also be functional as for going forward on the bow as you would more than likely get to your knees on this kind of boat the farther forward you went. If it were my boat I would consider a lifeline that is just a few inches above the deck...I think the current one would distract me a bit as I was navigating.

I knew it was a handrail/lifeline... of sorts, but I've never seen anything like it on this side of the pond. Previous drone development by the military came to mind when I saw this contraption. They used a launch rail for reconnaisance aircraft to get them off the deck in short order.

You should have seen the "net" they used to catch them when returning to the FBO. They missed constantly!
OK... so we loose the hand-rails and bring it to America?

Running Shot

It really lifts up...the hull design is impressive to say the least...very beautiful boat in my opinion.

Zero Cavity

This is Zero Cavity which was owned and driven by Dr. Santiago, a dentist in Florida...he spent a lot of time and money dialing this boat in and ran it in the One Design Series briefly before jumping over to the Performance Class...the boat simply flies!

Now that's a "Wing In Ground Effect" vehicle! Nice shot.

Thought some of you may find this one interesting.....

The Earthrace

Same idea but in a smaller scale, a young Swedish design student, Josefin Carne, has developed a Kajak with outriggers to be towed by a Kite (remember the TRY Kite-kat) when you are not paddling. She calls it Trijak and a model is made but no fullscale production that I know of yet. But I will surely buy one the day they are reality, since I don´t trust my ability to stay on the right keel with a normal kajak...

Mr. Offshore...

You will be happy to hear, your boat is available! However, it's somewhat smaller than the original production version. This model is being manufactured by Graupner. It is 930mm long and it's remote control. Graupner is a leading manufacturer of remote control models and this boat represents the 2nd model they have produced of an Ocke Mannerfelt design. (the first being the B-28)

A big thank you to YachtForums member "PromoceanModels", for sending me this picture to pass along to you. Enjoy!

Graupner builds a very nice model, I will definitely have to check that one out. I have the other Mannerfelt model, but it is actually the enclosed canopy B-24 (V-24 as we call it here in the US). I have hull and deck of the B-28, when we were building the boats in Kentucky (full size boats) we had a mock up of the B-28 made...it was nice. I powered mine at the time with a 3.5hp Cobra motor...it ran somewhere in the 55mph range. When you would come by the shore or dock with it you could actually see the hull pulling air down into the steps aerating the running surface.

Yep... often the dynamics remain the same, no matter what the scale. A lot of our development work was verified at the Large Cavitation Channel in Memphis, using models that were exact scale replicas of our conceptual designs. We utilized a CRAY 9000 to calculate our theoretical concepts, but ultimately scale models were built for confirmation. As designs proved worthy of further development, we would build larger manned-models for demonstration and further evaluation.

Outside of the confines of our research facility, some very interesting ideas were conjured up on paper napkins and a couple of beers.

I have a friend who knows nothing about nautical design, yet he continually carves hull designs into bars of soap and shows them to me asking my opinion. While I think I can look at most of what he has come up with and explain why it won't work, sometimes he has some interesting designs come across the old soap dish.

More than likely the best ideas at one level or another start out on a napkin!

OMD 2

Here is another design based on the same hull as with the sloping transom, which old-fashioned me likes much better...

For the fans of Bat-boats, here are a couple of close shots on the hull. More Bats than Boats perhaps...

I can't help but wonder how much effect the wings on the Batboat really have

MrOffShore, I was wondering if you were ever familiar with any of the rather radical hull work done by Peter R Payne up in the Chesapeake Bay area and with the Small Combatant Unit down in Norfork as well. You can note my posting at:

Sea Knife, SeaKnife
http://www.yachtforums.com/forums/showpost.php?p=15454&postcount=34
http://www.yachtforums.com/forums/showpost.php?p=15471&postcount=36
http://ourworld.compuserve.com/homepages/graeme/Peter/prpatent.htm

It would appear to me that some of his work was at the leading edge of Bladerunner's concept as discussed atTrimarans and Bladerunner.

Did Ocke ever mention Payne's work?? Quote from Payne's site, "He also developed the Air Lubricated Planing Hull (ALPH)."

I'm trying to find more of Payne's ground braking work.

Shannon 38 SRD wake

I went to the Shannon website and as I looked thru some of their references I noted a photo of the vessel at speed in the Yachting '05 issue. It sure appears to me to be throwing off considerable water in its midsection??

Peter Payne's SeaKnife

I just posted a few items related to Payne's work on the forum thread at Trimarans and the Bladerunner...

But the more I look at this work I think it might more readily resemble Ocke's bat boats, at least in looks of the hull forms and concept. So I am posting one of these SeaKnife subjects here on this subject thread, but will continue futher discussions of it on the other thread where I introduced Payne's work previously.

ABSTRACT Patent #3,763,810

A boat capable of cutting through rough waves at high speed with astonishing stability has a hull provided with a flat planing surface, which in plan is the shape of a thin wedge or delta. The sides of the boat rise upwardly and outwardly with a simple concave curvature from the two edges leading from a knife edge bow at the point of the wedge. The slender wedge shape moving through the water at high speeds develops continuous spray sheets up its sides, which are intercepted by the outwardly curving portions of the hull sides. Spray rails or deflectors may also be utilized to intercept the spray sheet, such deflectors being inclined at a small angle to the bottom of the planing surface. The knife edge bow rises upwardly and forwardly with a concave curvature from the point of the wedge and eventually terminates in a forwardly sloped bow transom. A keel skeg minimizes side-slipping. A stern transom, which rises substantially perpendicular to the trailing edge of the delta or wedge may have a rearwardly extending bustle secured thereto for buoyancy roll stability at low weeds.

Turbine Surface Drive

How about a surface drive like this (and the turbine power plant), Turbine RIB