I just recently finished rereading a favorite book of mine - 73 North, b Dudley Pope. It recounts the Battle of the Barents Sea at the end of 1942, when four RN destroyers successfully defended a convoy above the Arctic Circle from an attack by the Hipper, Lutzow, and six German destroyers. The failure to sink a single convoy ship in this attack was the trigger for Hitler's disbanding the German Navy.
The book also discusses, at length, the ideological differences between the German Naval staff and your run of the mill Nazi - Hitler in particular viewed the Navy as old school and aristocratic, a throwback to pre-WWI Germany. He had felt it was necessary to retain this element in the regime in order to appeal to more Germans as the Nazis attempted to gain power, and that aristocratic air remained until Raeder was replaced by Donitz. Hitler at the same time distrusted the Navy, as did many Germans, feeling that they had their own agenda apart from that of the Nazi party - the scuttling of the German High Seas Fleet at the end of WWI was the primary cause of that distrust. So the Navy was never a part of Hitler's inner circle - no naval officer ever went to jail with Hitler, threw rocks through the windows of Jewish shops, participated in the Night of the Long Knives, or engaged in beer hall brawls in his name in the early days.
The German Navy was indeed a throwback to earlier days - the days of 'gentlemanly' warfare, the Emden and the Goeben, and when U-boat commanders gave a ship's crew time to man their lifeboats before their ship was torpedoed. Unfortunately for them, they were handcuffed by Hitler's diametrically opposed demands, that they attack the enemy while at the same time not taking any risks.