Following the announcement of bbw's Wilhelmshaven mod (that he's working on like crazy at the moment) I've received permission to use his base campaign files and create a new version of the VonDos' ships mod.
The new version will be compatible with bbw's Wilhelmshaven mod, so you will be able to enjoy sailing through the locks of Wilhelmshaven and sinking VonDos' ships.
There are a number of tweaks from previous versions, chief among them being the change in ship type for VonDos' liners meaning that you are far less likely to come across them. They should appear primarily on their historic routes with the occasional appearance in convoy, but it will definitely be the exception rather than the norm. If you want to sink them, research their historic routes and hope for a little luck!
Once he has released, this mod will follow around a week later.