Japanese Heavy cruiser Mogami (1934) Country: Japan Type: Heavy cruiser Service: 1935 - 1944 Ordered: 1931 Fiscal Year Laid down: 27 October 1931 Launched: 14 March 1934 Commissioned: 28 July 1935 Struck: 20 December 1944 Fate: Scuttled 25 October 1944

The Mogami class ships were constructed as light cruisers (per the Washington Naval Treaty) with 5 triple 6.1 inch DP guns. They were exceptionally large for light cruisers, and the barbettes for the main battery were designed for quick refitting with twin 8 inch guns. In 1937 all four ships were converted to heavy cruisers in this fashion.

Mogami was the lead ship in the Mogami class of heavy cruisers in the Imperial Japanese Navy. Mogami was completed at Kure Naval Arsenal on 28 July 1935. She was engaged in various Pacific Theater campaigns during World War II. Mogami was severely damaged during the Battle of the Surigao Strait in 1944 and scuttled.