The War With Hitler's Navy, Adrian Stewart

As this well researched work reveals, Hitler's handling the German Navy during the Second World War was full of contradictions. The seriousness of the U-boat threat was never in doubt and in the dark days of 1940 - 1942, the Donitz's daring strategy coupled with the courage and determined actions of the captains and crews became perilously close to starving Britain into submission. But, despite having built and nurtured a surface fleet with capital ships of formidable power, Hitler was uncharacteristically cautious of employing them aggressively.