Knew something about the German Navy during World War Two, but this was a welcome addition to knowledge of the Kriegsmarine. Was not aware of the high stakes for the surface fleet needing a victory so badly to stave off being shelved or British setting of the trap to lure Scharnhorst out into the open. Some books are better suited to audio, i.e. the constant references to navigational fixes was a bit hard to follow without benefit of a chart or map. The narrator was certainly competent but could have done more to vary his delivery for emphasis and dramatic impact.