I have already thought about using his ships. However I found out that, with one exception, do not fit both the right time and place.
I'm making new ones at the moment working on b/w images I got from Stefan Härtel. The colors I take from a single color image I found on the net. Unfortunatly it does depict the Battle of Lepanto in 1570. That is about a 120 years after my scenario ends.
But it's the best I've got.
I still appreciate your suggestion.
Hendrik the Great