I think the worst Admiral by far was Raeder, leader of the German Navy, and here is why. 1.He did not understand why Carriers would become decisive even when the Jappenese and British were making extensive use of them. He was the only one not to get at least a few. Even Admiral Darlan of the french navy understood that some carriers were needed. 2.His biggest interest was gigantic ships at a time when Admiral Yamamato of Japan said the Battleship would be as useful in modern warfare as the Samurai Sword. 3.He lost many big ships in the Norweigh Campaign that should not have been lost and would have lost the entire surface fleet if the British didn't have too much caution. 4.He wanted to go to war with the US so his submarines could sink their merchant shipping ignoring the fact that the US had the industrial power to build plenty of destroyers to cover the Atlantic while fighting in Pacific, a fact Admiral Yamamato himself acknowledged. 5.He didn't even try to seize the French Fleet, and the only attempt at doing so was by Von Rundstedt during operation Anton, and it should be remembered that there were enough French Ships to scare Churchill. Who would you say was the worst and why?