[irish1958]

Does anyone if there is a map in which all the sinkings of Japan's ships are located? And broken down to merchant shipping and warships?
I haven't played the game anywhere as much as most, but I have felt that the amount of merchant shipping in the routes between Japan and the South China Sea ports and the Sea of Japan is grossly inadequate.
Japan had no oil and had to import 100% so there must have been a huge amount of tanker traffic; this is also true for other strategic materials.
Why is there not much more traffic in these areas?
In SHIII there is a mod called SH3Contacts which allows one to increase traffic by writing to the campaign files.
Nichols has made (a private) mod for SH4 but never released it.
Perhaps if you PM him, he might reconsider. This would solve you problem with the campaign files.
I am looking forward to this strategic mod; It will add to the game in a big way. But to improve game play, especially if your orders are to sink a certain type of ships, it is necessary to have the ships in the game in sufficient quantities to make the game interesting.