[A battle-tested heavy cruiser created by the concentrated placement of its main guns] The Tone class was the last heavy cruiser built by the Japanese Navy. Of the two Tone class ships built, it was completed in November 1939 as the first. This is Tone. All four 20.3 cm twin guns, which are the main guns, are concentrated at the front of the ship, and the rear is equipped with equipment that can mount up to six water reconnaissance planes, making it capable of both gunfighting and enemy search. It was characterized by a ground-breaking layout at the time. Moreover, its rational hull design enabled it to achieve high speeds of up to 35 knots and a long cruising range. It attracted attention for its excellent enemy search ability and maneuverability, and its sister ship Chikuma It was transferred to the aircraft carrier task force.When the Pacific War broke out in December 1945, it fought hard as the eye of the fleet in the attack on Pearl Harbor, the Battle of Midway, the Battle of the Mariana Gulf, and the Battle of Leyte Gulf in October 1944. She took the lead in the Kurita fleet and contributed to the sinking of the US escort aircraft carrier Gambier Bay. Later, in March 1945, while anchored in Kure as a training ship for the Naval Academy, she was damaged by an air attack by US carrier-based aircraft. The same year. In July, the ship was bombed again in Etajima Bay, and the ship was badly damaged, ending the war.