Kashima[1942] - Katori-class light cruiser
The Katori-class cruisers were originally ordered by the Imperial Japanese Navy to serve as training ships in the 1937 and 1939 Supplementary Naval budgets. During the Pacific War, they were used as administrative flagships for various fleets, such as submarine command and control, and to command escort squadrons. The ships were upgraded as the war progressed with additional anti-aircraft guns and depth charges. (Wikipedia)
http://en.wikipedia.org/wiki/Japanese_cruiser_Kashima
http://en.wikipedia.org/wiki/Katori-class_cruiser