I have just received this game, which covers the Trafalgar Campaign, and it appears to be a possible scenario generator as well as a most interesting game in its own right. I have also just received the book The Trafalgar Campaign, hopefully that will help.

The 1805 rules need some serious attention as does the game itself. I'd be interested in comments of any other group members who have the game. I did post on the FB Naval Wargaming page but no replies yet.