new project guidence

[yacht picasso]

hi guys,

i am starting on a new design, with no previous experience. what key factors are there to consider in the design of a 62meter yacht? do i need to keep draft low to improve on efficiency?

any help would be much appreciated.

many thanks to all!

[Gilbert]

Most of us with experience designing boats think designing a 62 FOOT boat is a pretty big deal.
For efficiency you should concentrate on keeping the weight down. But a 62 meter boat is going to weigh a lot no matter how you do it. Most of the megayachts that are being built nowadays don't have a lot of draft for their size. A friend of mine who worked doing interior layouts on large yachts described them as "just a big sled". I wouldn't argue with him on that statement.
Most owners want to go rather fast and so keeping the weight down so it can go fast AND having all the luxury they want too is THE big problem.

[alan white]

Originally Posted by yacht picasso

hi guys,

i am starting on a new design, with no previous experience. what key factors are there to consider in the design of a 62meter yacht? do i need to keep draft low to improve on efficiency?

any help would be much appreciated.

many thanks to all!

I am going to assume you mean 6.2 meter yacht. I would suggest you read some books that explain the fundamental key elements of boat design.
A lot of people here could go into detail explaining how efficiency is measured in a yacht and how draft factors into measuring efficiency, but your question is so general that any response will be full of qualifications, beginning with, "That depends on...", or, "If you mean a sailboat..."
Reading a primer will help you to form questions that are more useful to you.
Discussing efficiency is an interesting topic, because it means so many different things to so many people.
What efficiency is being improved? What is "overall efficiency"? It is not efficient to buy and then sail a yacht in the first place. Air travel is more efficient if time and effort are factors. Then, if the stated goal is to get efficiency once one already has a yacht, as if measured against other similar yachts, it must be admitted that the yacht designed to travel at the slowest speed wastes the least amount of wind.
You can see how this could go on forever. Qualification after qualification.

Alan

[yacht picasso]

Any good literature you can advise me on, or perhaps resources on the net?

However, as much as I can agree to your reply (which I thank), I disagree with the emptiness that you feel in the reply relative to the question.

I am sure a good designer or NA, is able to list some key variables to watch out for. Like draft depth relative to size, or to desired cruising speed and so how efficient it will be on fuel. Forgive my ignorance, but I can't see any other efficiency issue in hull formation rather than fuel consumption or wave dampening relative to displacement and speed.

[Cleetus]

Originally Posted by yacht picasso

I can't see any other efficiency issue in hull formation rather than fuel consumption or wave dampening relative to displacement and speed.

Perhaps that right there is the exact reason you should look into at least consulting a professional on this.

[yacht picasso]

Couldn't you reason out of the box and your linear thinking.... And list what you feel is best to look out for?

I'd much appreciate it!

[alan white]

Originally Posted by yacht picasso

Any good literature you can advise me on, or perhaps resources on the net?

However, as much as I can agree to your reply (which I thank), I disagree with the emptiness that you feel in the reply relative to the question.

I am sure a good designer or NA, is able to list some key variables to watch out for. Like draft depth relative to size, or to desired cruising speed and so how efficient it will be on fuel. Forgive my ignorance, but I can't see any other efficiency issue in hull formation rather than fuel consumption or wave dampening relative to displacement and speed.

Of course there are key variables to look out for. But isn't it true that you asked about how draft effected efficiency? There is not enough information in your question to respond without emptiness, I'm afraid.
If I asked you what was the most efficient implement to excavate my front yard to reach my water line, my guess is you'd be just about as empty as me.
Dave Gerrs "The Nature of Boats" is a great primer. Well worth buying. I cannot recommend a better book for introducing oneself to the whys and wherefores of boat design.
A.

[yacht picasso]

)

Yes, come to think of it... you are right. I guess it's my ignorance on subject that renders my questions so vague.
I will try and restructure my question on a new post.

Thanks for your time!

[alan white]

Originally Posted by yacht picasso

)

Yes, come to think of it... you are right. I guess it's my ignorance on subject that renders my questions so vague.
I will try and restructure my question on a new post.

Thanks for your time!

It would be a pleasure to answer any questions that happen to fall on subjects I'm familiar with.

A.

[Trevlyns]

Hi yacht picasso
Here's a good FREE guide to get you going...
Good luck!

[Guillermo]

Wow! A 62 m yacht is a huge design project indeed, involving dozens of highly skilled people, among them several Naval Architects.
Regarding the NA part of it, you may be interested in reading this, from the web pages of a well known designing office: http://www.international-yacht-desig...chitecture.htm
See also our Forum fellowmember Eric Sponberg's page: http://sponbergyachtdesign.com/Adventure.htm Scroll down for "The Design Spiral" and other most interesting information.
You may read also: http://www.kastenmarine.com/design_calcs.htm and the very complete: http://www.newavesys.com/spiral.htm
First of all, before going any further, what you need is to define the Design Brief for your project.
Cheers.

[yacht picasso]

Thanks guys!