2nd Nagara-class light cruiser (Total 6), named after the Isuzu River in the Chūbu region, Japan.
Battle of Hong Kong (8 December 1941 ~ April 1942)
The Solomon Islands campaigns (16 September 1942 ~ 13 November 1942)
repair & refit at the Mitsubishi Yokohama (14 December 1942) - a Type 21 air-search radar was installed. The No. 7 14 cm gun was replaced by an unshielded twin 12.7 cm/40 Type 89 gun. The No. 5 gun was removed. 2 x triple mount 25-mm guns were added (Total 10 x 25-mm AA guns) & 1 x quadruple Type 93 13.2 mm machine gun was added in front of bridge.
converting to an anti-aircraft cruiser at Mitsubishi Yokohama (17 January 1944 ~ 14 September 1944) - All of her remaining 14 cm guns were removed & 2 x twin 12.7 cm/40 Type 89 guns were installed. Type 96 25 mm AA guns was increased to 50 barrels. The catapult and seaplane equipment were removed. Type 13 air-search, Type 21 air-search and Type 22 surface-search radars were fitted or modified. Sonar and depth charge rails were added.
Battle of Leyte Gulf (20 October 1944) - Isuzu rescued 480 survivors from the sunken aircraft carrier Chitose. Isuzu was damaged while rescuing survivors from the sunken aircraft carrier Chiyoda (千代田).
Isuzu was sunk by USN submarines off Sumbawa, Java Sea 7 April 1945 (on same date as battleship Yamato was sunk)