Heavy Japanese losses of aircraft and ships in Hong Kong campaign according to the U.S. Joint Intelligence Committee. Daily summary dated 8 January 1942

An item referred to German sources reporting that Japan admitted to have lost 81 aircraft and 5 ships in the Hong Kong campaign with another 16 ships damaged.

Source

Map Room Papers (Roosevelt Administration), 1942 - 1945. U.S. Joint Intelligence Committee. Daily summary No. 29 dated 8 January 1942