[dskira]

Since it seams that freedom of expression is less important than "Spelling" and you have also a grammar teacher syndrome, you should do your homework (like at school) and you will know everything you need to know.
You are also hidden behind the anonimity of the internet, so what is wrong with that. K1W1 Is not your name, dskira is mine, don't says something very inapropriate when yourself is far more "Hidden" than me.

[Kevin]

dskira,

Kindly do not confuse "freedom of expression" with "permission to post unmitigated bashing and criticism".

Secondly, while you might not know who K1W1 is, others here do. A screen-name only offers anonymity if people don't already know the person face to face. Also, as far as I know, K1W1 did not introduce himself as an expert within minutes of deciding to contribute to the forums. Humility... you might give it a try.

Lastly, please take a moment to read the Forum Guidelines, to which I've provided a link. If your attacks continue your posts will be removed.

[dskira]

1,319 post is ideed very impressive.
I says what I want about yacht because I can. I don't have to be "Humble" Sorry it's not in my vocabulary. I agree with you that a entering a Forum doesn't make you an expert, a life as a naval architect yes.
For the attacks, sorry, I just reply, but that seams not very well understood.
My spelling perhaps?

[Kevin]

Originally Posted by K1W1

would you care to share with the rest of the forum any of the vessels you have designed in the last 39 years?

A valid question. We appreciate it when members of the industry participate here at YF.com so perhaps dskira would like to share his latest yacht design or build with us...

[PFJW]

Originally Posted by dskira

The project Sigma is one of the sikest naval creation I ever seen. I am amazed that a person with little knoveldge about yacht, decided to go with this ego designer oriented floating thing.

I don't understand why you say this when you say you are a designer yourself?

How would you feel if someone dismissed one of your designs so readily with no factual information about the real-world hydrodynamic performance to base their criticisms on?

Disliking something is perfectly fair, but not carte blanche to essentially insult the intelligence and capabilities of everyone involved in the project.

I think Sigma should be applauded for the commitment that the yard, owner and designer had to produce something different for a change. Of course they could have done something conventional, well proven, conservative and considerably cheaper if they had wanted, but those things already exist.

I also think it looks fantastic - there are plenty of "retro" designs around; why not have at least one yacht that looks as if it was built 100 years in the future rather than 100 years in the past?

If you don't like it there are thousands of other yachts out there to capture your interest.

And if the hull doesn't work, or if the design is too radical to re-sell; it isn't your money, you don't have to live aboard, so why fret about it?

[Brian]

So, Sigma has been launched a while ago now, does anyone know how she does perform?
For that matter how about the other big name reverse bow yacht "Predator"?

[NYCAP123]

I believe Sigma has not had any real world experience yet, only sea trials. Predator recently moved into the real world. I'm anxious to hear if she's encountered any seas and how she handled them but it's probably too early.
Dskira, I've seen a lot of poor spelling and grammer on this forum. It's mostly because english is a second language to many here. (Unfortunately I don't have that excuse ) Some just type too fast and don't proofread. You don't sound as if you're from down east though.??? Add to that the statements you made blasting into this forum and my nose starts to twitch. What's the story here? You say you don't need himility. Those who take that stance are usually very insecure. You might want to give that a little thought. You might also want to read the posts from some of the people you're dealing with here so you understand who is who. To save you a little time on that, I'm just a dumb old small boat captain who enjoys learning from very good minds.

[Ken Bracewell]

Originally Posted by Kevin

perhaps dskira would like to share his latest yacht design or build with us...

I'll give him credit for drawing some pretty boats (if not for spelling and grammar).
A simple Google search will land you on D Skira's website. Pretty boats, but no completed photos.??

Anyhow, spelling aside, pretty typical Maine-iac. We hav to put up with the down-east attitude when we are visitors in that lovely part of the world, but not here on the internet!

[YachtNews]

She could have the most simple and non-complicated name for a yacht. A revolutionary yacht with new and striking design as well as thinking in naval architecture. Yet her name in simple. The offical name of the SF-99 is nothing more than A name. That's right, her name is A.

[PEB]

Originally Posted by YachtNews

She could have the most simple and non-complicated name for a yacht. A revolutionary yacht with new and striking design as well as thinking in naval architecture. Yet her name in simple. The offical name of the SF-99 is nothing more than A name. That's right, her name is A.

It is an amazing boat design very forward thinking. In regards to questions about its design I would imagine that they have likely invented many new concepts in the yachts design that allow it to move through the water that is not seen in the photos I would think. With advances in software modeling they likely discovered many new techniques to make this design very usable.


http://www.youtube.com/watch?v=i7__7...be.com/169.htm

[PFJW]

Originally Posted by PEB

With advances in software modeling they likely discovered many new techniques to make this design very usable.

IIRC, according to an article looking into the spate of reverse, plumb and Axe bows in a magazine that I saw recently; Martin Francis' team build a large-ish, self propelled scale model of the hull and towed it around the Isle of Wight, including through the wakes of ferries, to asses the characteristics of the hull, as well as conventional tank testing.

Sound's like much more fun than fiddling with software.

[PEB]

Originally Posted by PFJW

IIRC, according to an article looking into the spate of reverse, plumb and Axe bows in a magazine that I saw recently; Martin Francis' team build a large-ish, self propelled scale model of the hull and towed it around the Isle of Wight, including through the wakes of ferries, to asses the characteristics of the hull, as well as conventional tank testing.

Sound's like much more fun than fiddling with software.

Interesting well that is one way of looking at a problem. I was just thinking in the day of advance software tools that allow for complex mathematical models and accelerated prototyping for testing designs. Somewhere early in the design phase they may have done some preliminary modeling and testing of a design. Some very exciting advances that are now out there for designers. If they did their testing in the water with a large scale model and towed it around to test designs interesting approach even if someone used software tools it still does not rule out the use of traditional testing methods in the designing of a hull.

I just brought this up because of some who commented about the design of the ax bow. I just thought of this because there are so many new methods of designing things today that a lot of traditional designing concepts get thrown out the window. Just in case if some have not seen this in my running around looking up information about the ax bow design there is a short article in the current Yachts International that talks about the ax bow design and some of the possible reasoning behind it's use and also talks about the Predator as well as A SF99. Looks at past ax bow designs as well as a number of new ships coming up that incorporates the ax bow design.

It seems one of the changes seems to be where the designer places the accommodations of the Yacht. The ax bow encourages the designer to place these midpoint an area of minimal motion because this design tendency to pitch less then the conventional hull.

I thought this was funny and interesting in my research I found this photo of Raytheon DD(X) Stealth Destroyer. I found the design to be oddly similar to the Martin Francis' and Philippe Starck design of the SF99.

http://peos.crane.navy.mil/DDG1000/i...0_1_larger.jpg

Here is more information about the DD(X) and there is a nice photo of the model being tested.

http://www.raytheon.com/capabilities...pth/index.html

http://www.raytheon.com/broadcast/hull_form.asx

http://peoships.crane.navy.mil/ddx/

The Wave Piercing Tumblehome Hull is the responsibility of Northrop Grumman.

http://www.irconnect.com/noc/pages/n...=79338&print=1


http://www.ddxnationalteam.com/

http://en.wikipedia.org/wiki/Zumwalt_class_destroyer

[YachtNews]

The beautiful A pulled into Gibraltar today. Two pics are available on the Gibport website!

http://www.gibraltarport.com/html_fi...otolibrary.cfm

And if ever you wanted detailed specifications on "A".
http://www.l-xxxlyachts.com/anhaenge...or_yacht_a.pdf

[NYCAP123]

Amazed by the amount of info that was put out. Although the name is out there I won't repeat it here, but just want to say congratulations. She's my new screen saver.
So let me ask the crass question. Anybody know the rough cost?

[Seafarer]

Originally Posted by NYCAP123

Amazed by the amount of info that was put out. Although the name is out there I won't repeat it here, but just want to say congratulations. She's my new screen saver.
So let me ask the crass question. Anybody know the rough cost?

No, but at 757 cubic meters of fuel oil, ~200k gallons, i wouldn't want to fill it up at my local fuel dock... at $5.09/gallon that's over a million bucks just in fuel to run her for a week or two!