I DO like to be as historically accurate as possible,and I also remember getting quite frequent radio messages about not sinking this or that (prize regulations etc),this is where some of the confusion stems from.I also remember a recent message forbidding attacks against capital ships...ahem,we are at war?

When would it be safe for open warfare against the French then?towards the end of '39?
This is going to be SO hard,letting them schweinhunds through!