The strategies of the World War II have been the key to complete missions. In the eyes of many people, the airplanes were one of the essential equipment of the battles in World War II. Also, it was a secret service under the water line of the ocean working like a shadow with targets like Japan supply and combat ships, which were submarines. Submarines were used first to block ships suspecting to have prohibited cargo throughout the British line by the Germans. In addition, they announce to the people aboard to abandon the ship and the submarine sunk the cargo ships. In 1916, the German Kaiser order for sunken ships suspecting to have prohibited cargo without letting people know aboard. One of the serious attacks was the British ocean liner