GRP passenger cat OR AL passenger cat?

[hashem_1064]

hi all.
I decided to build a small catamaran passenger ship, about 40- 45 pax.but i exactly don know what kind of material should be choose? and more over i found only a few samples have built ever! to extract optimum dimensions. i 'd be obliged to help me somebody about it.

[daiquiri]

Are you perhaps in business with this guy:
http://www.boatdesign.net/forums/showthread.php?p=232677#post232677
?

[hashem_1064]

first: NO.

seccond: did i register in detectives forum?

i just asked a technical question.