Help "About Trawlers"

[okoyunlu]

I'm an undergraduate student from Istanbul-Turkey.
I'm going to design a trawler cruise boat (steel) as my graduation project so I need data about the trawlers.
If some who could advise some sites (the web-sites I searched generally require username and password) or send usefull stuff ,will do me a unforgettable favour.

And I attach my previous school project...

thanks at once....