I have come across a very nice model of the paddlesteamer RIGI as a free download. It is 1/72 scale and 580mm long. It can be found on:
      www.dolfmeister.com  click on paper models.   certainly worth looking at and easily enlarged as a working model. Regards, Walter.

Thank you Walter. Very interesting. I've downloaded the details for future reference.   

Always worth collecting data. 

cheers

Ken

Thanks Walter. Interesting link and a nice card model.

Andy

The horse may be out of the barn at this point, but there are some links

http://www.vaporama.ch/index.php?page=416
in dorfmeister's site that go to museums of collections of steam engines, and 3 to ships including the Blumlisalp and Lotschberg. Thanks for pointing the way Walter.
dave