 He said that he was on the bridge of "U-140" while she was running the Northern Barrage in company with , , and "U-156" when he suddenly saw "U-156" blown up.He claimed that she was "blown 500 feet in the air".However, Bastin gave the date of this event as 22 October 1918, which was almost a month after the return to Germany of "U-140", the submarine aboard which he was held captive.