E-7x

olli · 11-12-2007, 09:20 PM

What happend with this boat?:

Does anyone have better pics of it?

MrRob · 11-12-2007, 10:14 PM

They cut it up because its... shiiiiite

Matt · 11-12-2007, 10:24 PM

Speaks the expert on boat design.

DAVE · 12-12-2007, 08:23 AM

He's probably right though, to be fair.

Adam · 12-12-2007, 08:49 AM

Quote:

Originally Posted by MrRob

They cut it up because its... shiiiiite

You have probably missed the point of the boat! It is not a planing hull powerboat as such - and works in a different way to other boats on here.

It was a high efficency hull form as originally developed by Erbil Serter. Erbil came up with the concept - I then designed the hull form to that concept and the prototype hull was built and tested by Advanced Boat Construction.

The craft itself ran twin diesels with waterjets. The deck was as simple as possible, no fit out below deck. But we did lots of testing at various displacements. Fuel consumption was extremely low for it's speed / weight / size and much potential for more development.

I did a lot of testing on the boat in all types of conditions - and the results were fantastic upto a speed of approx 28 knots. Ride quality was also really good and the boat had much potential for commercial and leisure use. Other craft of this concpet are now being worked on.

This craft itself is now in Hawaii and has been converted to use foils!

Adam · 12-12-2007, 08:56 AM

Quote:

Originally Posted by DAVE

He's probably right though, to be fair.

Again - you are missing the point - what the concept was and the objectives of the prototype.

There were a number of similar craft developed before this version and some really interesting craft. A new company is being formed by Murat Serter to further develop such craft.

Scand · 12-12-2007, 09:24 AM

Quote:

Originally Posted by Adam

You have probably missed the point of the boat! It is not a planing hull powerboat as such - and works in a different way to other boats on here.

It was a high efficency hull form as originally developed by Erbil Serter. Erbil came up with the concept - I then designed the hull form to that concept and the prototype hull was built and tested by Advanced Boat Construction.

The craft itself ran twin diesels with waterjets. The deck was as simple as possible, no fit out below deck. But we did lots of testing at various displacements. Fuel consumption was extremely low for it's speed / weight / size and much potential for more development.

I did a lot of testing on the boat in all types of conditions - and the results were fantastic upto a speed of approx 28 knots. Ride quality was also really good and the boat had much potential for commercial and leisure use. Other craft of this concpet are now being worked on.

This craft itself is now in Hawaii and has been converted to use foils!

It is nice to see some thing that looks a bit different.
What kind of L/D ratios did it achieve?
It is probably very good in head seas, looks like it might be a challenge in following seas though?

Cheers.

Jon Fuller · 12-12-2007, 09:26 AM

I remember a million years ago, there was similar (though smaller I think) boat shown on 'tomorrows world' that was clearly a fast displacement 'piercing' type boat. can't remember what they called it, 'the knife boat', Knifer' or summat. Anyway, they had it running in a fair chop, alongside a convensional Vee (Ring, Phanny, Marshan etc) showing it's effortless ride compared to the 'skimming the surface' boat.
Never heard much, if anything of it after that, but presume the wave piercing cats & VSV's were a development on the theme.
And I guess it's realy a extreme development of the heavy warp designs from the likes of Bill Maloney.

Scand · 12-12-2007, 09:39 AM

Quote:

Originally Posted by Jon Fuller

I remember a million years ago, there was similar (though smaller I think) boat shown on 'tomorrows world' that was clearly a fast displacement 'piercing' type boat. can't remember what they called it, 'the knife boat', Knifer' or summat. Anyway, they had it running in a fair chop, alongside a convensional Vee (Ring, Phanny, Marshan etc) showing it's effortless ride compared to the 'skimming the surface' boat.
Never heard much, if anything of it after that, but presume the wave piercing cats & VSV's were a development on the theme.
And I guess it's realy a extreme development of the heavy warp designs from the likes of Bill Maloney.

Peter Paynes's Seaknife concept looks similar but was fully planing.
Similar benefits was clamed.

Scand · 12-12-2007, 09:41 AM

Us patent
3,763,810 October 1973 High Speed Boat with Planing Hull "Sea Knife"
For a descibtion on how is works....

DAVE · 12-12-2007, 09:55 AM

Adam, I always miss the point you know that. Still don't like it though.

RossM · 12-12-2007, 10:02 AM

Quote:

Originally Posted by MrRob

They cut it up because its... shiiiiite

ahahahaha thats fu*kin funny

olli · 12-12-2007, 03:53 PM

Adam
Thanks for the info. Would you post some better pics of it, please?

Adam · 13-12-2007, 09:32 AM

Quote:

Originally Posted by olli

Adam
Thanks for the info. Would you post some better pics of it, please?

Will try to sort some out later, have a few in-build shots and a few more 'on-trials'

Adam · 13-12-2007, 09:38 AM

Quote:

Originally Posted by DAVE

Adam, I always miss the point you know that. Still don't like it though.

This was purely an experimental craft and way of production. Also on a pretty tight budget, hence simple deck coaming, straight transom etc etc.

I had drawn up a number of production concepts ranging from patrol boats to cabin cruisers - and most who have seen them thought they looked really good. In many ways a bit of the 'Wally Yachts' styling some years before they went into the public with motor yachts. Also designed a 42' fast fishing boat loosely based on the concept (but with no rocker) for the Middle East.

Adam · 13-12-2007, 09:43 AM

Quote:

Originally Posted by Scand

It is nice to see some thing that looks a bit different.
What kind of L/D ratios did it achieve?
It is probably very good in head seas, looks like it might be a challenge in following seas though?

Cheers.

Will have to see if I can locate the trails data.

It was indeed very goo in head seas. In folowing seas it was perhaps better than expected and really very good upto speeds of about 28knots. Beyond that speed with the amount of rocker in the hull there was the start of too much stern lift. Pretty much as we had expected - but the boat was about achieving good cruising speeds in comfort and economically. It was also looking at scaling the design theory upto larger craft.

This was running the craft with waterjets - which did not help with stern grib etc.

Matt · 13-12-2007, 09:50 AM

It seems to share a number of similarities with the current generation of ultra racing yachts

Scand · 13-12-2007, 07:24 PM

Very interesting project...is there any plans for further commercialization of the concept or is the marine industry to conservative embrace progress? At low planning speeds, with those very file lines of entry, and significant amount of hook it should be pretty efficient.

glecheminant · 13-12-2007, 08:43 PM

Quote:

Originally Posted by Scand

Very interesting project...is there any plans for further commercialization of the concept or is the marine industry to conservative embrace progress? At low planning speeds, with those very file lines of entry, and significant amount of hook it should be pretty efficient.

Looks like it has the lines of a Lochin 30 and the bow shape of a Cygnus but the topdeck of a raceboat. I don't think it looks like a modern race yacht at all, very different indeed and very deep, whereas modern race yachts a la open 60, 40 etc. are viery beamy and now very flat bottom. It looks like a hull that would bridge the gap between a fast fisher and a sea going sports crusier. Very individual and classic...I like it.

there that's my bshite for what my comments are worth.

Glen

Adam · 13-12-2007, 09:49 PM

An in-build shot - showing fineness of bow and also flare in topsides.