Complex sentence: The author "Sea Lion" (the Pseudonym of Geoffrey Bennett, a career naval officer), based his 1950 novel "The Diamond Rock" on the 1804 event, as did Dudley Pope in his 1976 novel "Ramage's Diamond".
Split into simpler sentences: The author "Sea Lion" (the Pseudonym of Geoffrey Bennett, a career naval officer), based his 1950 novel "The Diamond Rock" on the 1804 event. So did Dudley Pope in his 1976 novel "Ramage's Diamond".