When we moved over from the date-based to the cfg-based method of implementing the random tonnage mod, the tonnages in the mod were strictly defined by Observer, based on his investigations into wartime tonnage. He gave me specific upper and lower limits for each ship in his mod. As I recall, nothng was changed from what he gave me. In fact he was VERY determined that nothing should be changed, and I was very sure to stick to his requirements.
As for specifics, I have no idea what C3 tonnages were in real life or in the standard game. I'm a big picture kind of guy when it comes to peripheral stuff like this, so I leave that stuff to others who know better.
