| phoenix_aim54
USN losses were also bad. 152 US Subs never returned. Germanys high losses was not due a failure of the Kreigmarine, but of the steady Allied advances in ASW, which eventually out paced German U-boat technology.
The Japanese on the other hand were far behind in ASW warfare.
I decided to leave off the XXI and XXIII as they never reached operational status. Just like the P-80 shooting star never reached the European Air War in time. Had the war gone on a few more months, then yes, you probably could include them.
LeeEnfield
The Milch Cows (Type XIV and some early Type VII) only refueled the earlier boats such as the type VII B/C/D2 as well as the IXB/C. The type IX/40 was a specially designed Long range with extra saddle tanks that could reach the Indian Ocean without resupply. Fortunatly only 87 were built, and most were sunk. |