From top/port side:
Oyodo was unique light cruiser intended as a command vessel for submarines. Later, she became the flagship for the Combined Fleet, and participated in the Battle of Leyte Gulf. Work was done to modify the aft aircraft handling equipments in 1944.
Class-lead ship of the Imperial Japanese Navy converted to accommodate extra reconnaissance planes in 1943
The class (Tone and Chikuma) were the last heavy cruisers built for the Imperial Japanese Navy, with all guns forward, and aft dedicated for aircraft handling.