Complex sentence: She was reclassified DMS-37,23 June, and trained in mine-sweeping exercises in Chesapeake Bay until 27 August when she sailed from Norfolk for the western Pacific, arriving at Okinawa 15 October.
Split into simpler sentences: She was reclassified DMS-37,23 June, and her crew was trained in mine-sweeping exercises in Chesapeake Bay until 27 August. She then sailed from Norfolk for the western Pacific, arriving at Okinawa on 15 October.