" Hall loved the surprise of intelligence work and loved knowing the real stories behind events reported in the news, which often were censored. For example, Room 40 learned the real fate of a German submarine, U-28, that attacked a ship carrying trucks on its main deck. One shell fired by the U-boat's gun crew blew up a load of high explosives stored in the ship, and suddenly "the air was full of motor-lorries describing unusual parabolas," Hall wrote. Officially, the U-boat was lost because of explosion. But Hall and Room 40 knew the truth: one of the flying trucks had landed on the submarine's foredeck, penetrating its hull and sinking it instantly. "In point of actual fact," wrote Hall, "U-28 was sunk by a motor-lorry! "

― Erik Larson , Dead Wake: The Last Crossing of the Lusitania