One thing, but are you interested to add Brazilian Navy's ships? (on wikipedia, I read that one german submarine was sunk by brazilian destroyers).
Remember that Brazil entered in the war on October 26th 1917.
these are the brazilian ships that partecipated in ww1:
Bahia class light cruiser:
http://www.mediafire.com/download/5t...ma9w/bahia.png
http://www.mediafire.com/download/9s...ne_drawing.png
Parà class destroyer (based on the british E or River class DD)
http://www.mediafire.com/download/6z...ro_de_1923.jpg
http://www.mediafire.com/download/7x...a/br_dd_13.gif