Operation K was a Japanese naval operation in World War II, intended as reconnaissance of Pearl Harbor and disruption of repair and salvage operations following the surprise attack on 7 December 1941. It culminated on 4 March 1942, with an unsuccessful attack carried out by two Kawanishi H8K "Emily" flying boats. This was the longest distance ever undertaken by a two-plane bombing mission, and one of the longest bombing sorties ever planned without fighter escort.
President Theodore Roosevelt High School in Honolulu was damaged by bombs dropped nearby from Operation K.
The Kawanishi H8K is a flying boat used by the Imperial Japanese Navy Air Service during World War II for maritime patrol duties. The Allied reporting name for the type was "Emily".
Kawanishi H8K
Tail gunner position (without gun)
A Kawanishi H8K2 Type 2 Flying Boat ashore.
An H8K2 51-085 of the 851st Kōkutai in flight, immediately before being shot down by the U.S. Navy PB4Y-1 from which the photograph was taken, 2 July 1944.