Citing his first U-boat, after more than 500 hours of flying with RAF coastal command, F/O WB Tilley, of Melbourne, Victoria, and the captain A RAAF F "H for Harry" Sunderland, dropped his depth charges with such accuracy, that the U-boat dived to its death 26 minutes later. Photo shows: The entry splash of the dropped depth charges. A trace of machine gun fire from the flying boats rear turret can be seen leading across the water to the U-boat. This fire killed the U-boat's captaining and coxswain