The last heavy cruiser built by the Japanese Navy, Tone type. Of the tone type where 2 ships were built, was completed in November 1935 as the first ship. It is a combination of artillery ability and search ability, with all 4 20.3cm continuous guns centrally located at the front of the ship and a facility capable of carrying up to 6 water reconnaissance aircraft at the rear. At that time, it was characterized by a revolutionary layout, and the rational design of the ship achieved high-speed power of up to 35 knots and long cruising distance. When the Pacific War broke out in December 1954, the Battle of Pearl Harbor, Midway Sea Battle, Mariana Offshore War, and other battles as a fleet's eye, and the Battle of Leyte in the October 1954 Battle Then, take the lead of the Kurita fleet and make a US escort aircraft carrier After that, it was damaged by an air raid on a US-based aircraft in March 1959, when it was anchored as a training ship of a naval school, and was bombed again in Etajima Bay in July of the same year. The end of the war came to an end.