Japanese forces sinking or disabling British warships at Hong Kong according to the U.S. Joint Intelligence Committee. Daily summary dated 27 December 1941

An item referred to the Japanese press which rapported that Japanese forces sank or disabled at Hong Kong 1 British destroyer, 1 submarine, 1 gunboat and 6 torpedo boats and captured 21 merchant ships.

Source

Map Room Papers (Roosevelt Administration), 1942 - 1945. U.S. Joint Intelligence Committee. Daily summary No. 17 dated 27 December 1941.