Max Surf Hull Design

[Zeus]

Hi, i'm trying to design a high speed ferry, but i have had numerous problems modeling the hull in maxsurf, but keeping within the constraints.
It must be 100m long, have a maximum length/beam ratio of 6:1, a displacement of 1300tonnes (which is proving a be difficult for me!), and a draguht of 3 metres. The ferry will be required to carry 600 passengers, 20 crew and 160 cars. Any advice or help on this matter would be greatly appreciated. Thanks.
chris

[Andrew Mason]

If it going to be 16.67m wide and 3 metres draft, I assume it is going to be a catamaran and not a monohull. So what is the specific problem you are having?

[Zeus]

It did need to be a mono hull, and I have now managed to produce a design which conforms to the specs given (after a lot of messing about). Its not quite the shape i had in mind, but it works with reasonable success. If i have time i might try and produce another more pleasing design. I just now have to get to grips with the analysis programes related to maxsurf.cheers anyway.
CE

[Andrew Mason]

How are you planning on getting a block coefficient of 0.26? I would have thought this length beam and draft combination is just about impossible at this displacement.

[Zeus]

to be honest, as u might of guessed I'm new to Maxsurf, but have managed it in the end, all though it did take a lot of trial and error. It wasnt exactly the hull shape i had in mind though. The design i ended up with had a block coeffiecient of 0.54

thanks everbody for your help,

CE