[TorpX]

Originally Posted by Dread Knot

To make matters worse, not only did the Japanese not register with us. They often didn't register with themselves.
...

I had suspected something of this nature might be the case. There is a very large discrepancy between claimed tonnage and JANAC tonnage.

If I were to attempt to construct a SH4 traffic campaign, I think it would be better to use the overall number of Japanese ships/tonnage and lay down patterns accordingly, than to try to recreate every convoy the Imperial Japan formed (or recorded).