Strength of the Japanese naval force which attacked Pearl Harbor according to the U.S. Joint Intelligence Committee. Daily summary dated 12 December 1941

Akagi. ©Warshipsresearch.blogspot.com

Kaga (1921). ©Warshipsresearch.blogspot.com

Soryu. ©Warshipsresearch.blogspot.com

An item reported that the attack on Pearl Harbor, Hawaii [on 7 December 1941] and other American islands was executed by striking force numbering 6 aircraft carriers  [Akagi, Kaga, Sory, Hiryu, Shokaku, Zuikaku], supported by a covering force of 2 battleships [Hiei, Kirishima] and a screening force of 2 heavy cruisers [Chikuma, Tone] and a destroyer squadron. It was believed that at the present the aircraft carriers were widely scattered.

Source

Map Room Papers (Roosevelt Administration) mr0422a. U.S. Joint Intelligence Committee. Daily summary No. 2 Dated 12 December 1941.