During World War I, the British and Americans faced a serious threat from German U-boats, which were sinking allied shipping at a dangerous rate. All attempts to camouflage ships at sea had failed, as the appearance of the sea and sky are always changing. Any color scheme that was concealing in one situation was conspicuous in others. A British artist and naval officer, Norman Wilkinson, promoted a new camouflage scheme. Instead of trying to conceal the ship, it simply broke up its lines and made it more difficult for the U-boat captain to determine the ship's course. The British called this camouflage scheme "Dazzle Painting." The Americans called it "Razzle Dazzle."U-boats did not aim their torpedos directly at a ship to sink it. Because the target was moving, it was necessary to aim ahead of its path in order for the torpedo to arrive in the correct spot at the same time as the ship. If the torpedo is too early or too late, it will miss. The primary goal of dazzle painting was to confuse the U-boat commander who was trying to observe the course and speed of his target. As you can see in the photo of the French Cruiser "Gloire" on the left, contrasting diagonal stripes can make it hard to see just which direction the ship's bow is pointing. The American merchant ship "Mahomet" is another example. How many bows can one ship have?