Kotaka(小鷹?) was a river gunboat of the Imperial Japanese Navy, part of the 11th Gunboat Sentai, that operated on the Yangtze River in China during the 1930s, and during the Second Sino-Japanese War. Participated in the Battle of Wuhan, June-Sept., 1938. Participated in Battle of Madang and Battle of Jiujiang, June, 1938. Nanchang Campaign: February–May, 1939. 1942: In service as passenger ship. Sunk May 31, 1944 on the Yangtze River while serving as a communications ship. The IJN official designation was 60-ton traffic ship (Motored river exclusive-Special type)(六拾瓲交通船 (内火式河用特型),,60-ton kōtsūsen (Uchibishiki kawayou-Tokugata)?).