Chinese Submarine Editorial Photo

The submarine or submersible boat submarine is able to run on underwater ships. A large submarine is mostly cylindrical, midship usually set up a vertical structure bridge, earlier known as `tower`, in communication, sensor, periscope and control equipment. Since the first World War, the submarine has been widely used as an important position, many countries of the Navy, its function is to attack the enemy warship or submarine, coastal protection, blockade, reconnaissance and special forces operations cover.