Excellent book that's a must-have for anyone with a serious interest in the U-boat war, naval history or WWII really.

However I have to say that from a British perspective the author's more and more strident pro-US, pro-Canadian and anti-British text became more and more grating over this second 700-pages of the 2-part book. He may be correct in his analysis, who am I to say, but it seemed that 2/3rds of the North Atlantic alliance were always right and the other third continually erroneous, even when doing the same thing (the RAF v. USAAF bomber campaigns being perhaps the most egregious example, although "horrendous" losses of personnel in US ships seems somehow less worthy of comment when it was the Royal Navy on the receiving end, which jarred somewhat).

However, the scholarship, depth of research and the sheer volume of well presented facts means that one must overlook the author's peccadillos and revere the holistic achievement. ( )

Unfortunately I didn't do a review immediately after reading this book as I had just joined Goodreads at that time. So now after almost a year, I don't remember the tiny but interesting points that I would have liked to share here otherwise.

But I do remember that this is an exhaustive book. Perhaps the best researched book about the U-boats. ( )