[mookiemookie]

Of course it's worth reading...it's from Onkel Karl himself! But don't make it your first book on the U-boat war (for that, I would go to Blair obviously or really anything by Lawrence Paterson). He is of course very slanted and writing at a time when all of the details of the war were not known (a lot of the codebreaking ULTRA info was still classified when he wrote this), but for an insight from someone who was actually there...any historian will tell you primary sources are very valuable. Just take it in context of everything else.