Shown here is the Type VIIC seagoing U boat U 426 receiving a final burst of fire from a Sunderland flying-boat of No.10 Sqd (RAAF) after being depth-charged west of Nantes, 8th January, 1944. She is seen filling with water and sinking stern first after being hit aft. Taken from The Longest Battle: The war at Sea 1939-1945.