The USS Seawolf was one of the greatest submarine raiders of all time. Having narrowly avoided the attack on Pearl Harbor the Seawolf set out for the seas of the Pacific to wreak havoc on Japanese shipping. Joseph Melvin Eckberg was on the Seawolf from her maiden voyage and remained with her until January 1943. As chief radioman he was instrumental in assisting Captain Frederick Warder to find and destroy enemy targets. From the claustrophobia of being trapped under water and the overwhelming fear of depth charges to the joys of aiding the war-effort and the camaraderie on the ship, Eckberg's account, told to the authors Gerold Frank and James Horan, gives remarkable insight into submarine warfare of the Second World War.