Japanese submarine I-9 was a Japanese A1 type submarine. On 11 December 1941 shells and sinks US steamer Lahaina 700 miles northeast of Oahu. On 19 June 1942 shelled and damaged US Army Transport General W. C. Gorgas () . On 25 August 1942 she was depth charged and damaged by USS Grayson , USS Monssen , and USS Patterson (all ()). She made supply runs to Guadalcanal November 1942- January, 1943. She was sunk off Kiska() 13 June 1943 by USS Frazier .