originally, cruiser division 7 was composed of the heavy cruiser class Mogami (Mogami, Mikuma, Suzuya, and Kumano). however, after the loss of Mogami and Mikuma, Tone and Chikuma transfered in to make up the latter period cruiser division 7. this new cruiser division 7 was made up of cutting edge heavy cruisers, but shortly after they were all lost in the battle of Leyte Gulf the exception of Tone.