Strong Japanese force in the Bay of Bengal according to the U.S. Joint Intelligence Committee. Daily summary dated 9 April 1942

An item reported that the Japanese navy operated in the Bay of Bengal with probably 3-4 battleships, 4 aircraft carriers, 6 converted aircraft carriers, 8 heavy and 2 light cruisers and 28 destroyers presumable divided over two or more task forces. The J.I.C. commented that these figures were more correct than the ones mentioned in Summary No. 219.

Source

Map Room Papers (Roosevelt Administration), 1942 - 1945. U.S. Joint Intelligence Committee. Daily summary No. 120 dated 9 April 1942