Theseus survived a submarine attack while zigzagging, unlike Hawke when U-9 struck her. Across their service histories, Edgar-class ships faced roughly twenty German and Austro-Hungarian submarine attacks, with Hawke the only loss. Submarines remained powerful weapons, but U-9's exceptional success did not represent the broader operational odds. Theseus later served at Gallipoli and as an armed depot ship in the uncertain Black Sea environment.
Notable Point · 56:29-57:57
Edgar-class survival complicates the U-boat narrative
Across roughly twenty German and Austro-Hungarian submarine attacks, only Hawke was lost, cautioning against treating submarine success as automatic.