By the way... here is one of the best sites i've ever seen for information about different types of ww1 ships... they give class data, design data, names of ships in the class and even some basic deck-plans to work from... if you don't already use it as a reasource i highly rcomend it... i use it regularily for information when i build my museum display models...
http://www.worldwar1.co.uk/warship.html
If you need more reasources and references let me know and i'll see what i can do