Tater makes a great post here:
http://forums.ubi.com/eve/forums/a/t...6581072435/p/2 and backs his assertions up with references.
What I gather from that:
- Merchants WERE unescorted for the most part until late war.
- The IJN gave ASW a very low priority. IJN escorts were unprepared for ASW.
And that doesn't mean you can just go "ravishing" convoys without a care in the world, keep in mind that 22% of USN submariners did not come home. Sure, that's nothing compared to KM loss rates; but you still should have to be careful. But I can still certainly see why people wouldn't like this from a gameplay POV, but I guess that's why modders exist.
PD