Hi nihil

I know you are a deeper thinker then that:
But who gives a damn about the City of Coventry and its citizens?...................Churchill is to blame for that one
If Churchill had of evacuated Coventry, the Nazi's would have known that their precious codes were broken and would have changed them, which would probably have prolonged the war...not good, I don't want to make light of the citizens of Coventry and their sacrifice, but I believe London was not spared much of what Hitler was throwing at England during the blitz, so everyone wether they liked it or not, made sacrifices, right?

As for ASDIC and RADAR, these didn't come about until later in the game, what really stopped the U-Boats were the fact that they developed the "Snorkel" too late, if they had of had that at the start, then they would be able to stay submerged when doing their attacks and also avoid the corvettes which protect the convoys.Also Hitler and Canaris had a falling out, and like every other mistake Hitler made, the production of U-Boats fell off, and so the convoys improved their record of getting through the wolf packs.

Do you know how hard it is to see a periscope at sea, even in 5ft swells, or the North Atlantic, also all the ASDIC did was report back that there was an object at a certain depth, could be a whale, when a Diesel Sub goes Ultra quiet and slips under a thermal layer, no sonar on this planet is going to find it. Radar was only good if the sub was on the surface, so being a sub, they were submerged a lot....

The fact that we knew the codes during the war, probably saved more lives then lost??