Can you span a Cat?

Hi everyone. I am trying to use the Maxsurf v11 package to produce a 17m Catamaran and have come up against problems when producing the polars in Span.

It tells me that the results aren't converging. I understand convergence but have no idea where the difference is lying.

I have used Span before but only with monohulls and haven't yet had this problem.

The manual mentions nothing about not being able to predict catamaran's behavior. Has anyone experienced similar? Will Span model a catamaran?

I need help.

 

Wrong thread for this question. Try the software forum. Sometimes Andy drops in there so he should be able to help.

cheers

Phil

 

Thanks Phil

 

Let's continue this discussion at http://www.boatdesign.net/forums/design-software/maxsurf-v11-can-you-span-cat-37045.html