It's my first game, playing the confederacy, and until now, according to the log messages when my ships were placed in the "shipping lanes" box, I interrupted northern supply and in the "blockade" boxes, they were giving me some extra supply. I was letting them in the blockade box.
Recently, I got those steam frigates build in the UK, that were blocked for several turns in the shipping lanes, so I moved all my other ships there because of the admiral with an evasion bonus (just noticed in fact that the bonus doesn't apply when the fleet isn't moving, but doesn't matter).
And this time, instead of being told that I had blocked federal supply, I got this new message : "transport ships transported 20 supply points oversea". What does this mean? It seems to mean that this fleet could ship supply somewhere if for some obscure reason I had ended up with units somewhere off-map, say in Cuba or wherever. Maybe on the West Coast (California, for example) if I had troops there (I don't)? Maybe in some part of the main map that would have ended up isolated?
Anyway, at the moment, I've no units anywhere that could require "oversea supply", so I assume this is useless for me. And I'm wondering why this fleet doesn't interupt federal shipments anymore instead. The only difference I can see with the beginning of the game when it did is that I now have these two "steam frigates" in the box instead of only brigs. Do different types of ships do different things in the box?
Thanks in advance for your help.
Edit because I just thought of it : my fleet fought the previous turn, so maybe that's why I didn't interrupt any shipping, and besides I just took Fort Monroe last turn, so removing the blockade in Virginia, so maybe *this*, rather than fleet and boxes, has made the "transport ships transported 20 supply points oversea" message appear?