 When Bargsten observed the maneuvers of "PC-565" and saw the patrol craft bearing down on him, he realized the U-boat's position was hopeless and gave the order to flood and abandon ship.It was not until he saw his Engineer Officer coming through the conning tower hatchway, that Bargsten realised the former had become panicky, since the Engineer's station was in the control room.His last view of his boat was of water pouring down the conning tower hatch as she went under.