Complex sentence: The ship had a standard crew of nineteen officers and 464 enlisted men, though while serving on cadet training cruises, her crew numbered twenty-nine officers and 445 enlisted, with 162 cadets.
Split into simpler sentences: The ship had a standard crew of nineteen officers and 464 enlisted men. While serving on cadet training cruises, her crew numbered twenty-nine officers and 445 enlisted, with 162 cadets.