But there was not enough time before the port propeller of Olympic sliced through the submarine's pressure hull just aft of its conning tower. The crew of U-103 blew ballast tanks before scuttling their sinking submarine.
Unfortunately, there wasn't enough time for the port propeller of Olympic to cut through the submarine's pressure hull just aft of its conning tower. The crew of U-103 had to act quickly, releasing ballast tanks before intentionally sinking their submarine.