Allied aircraft sighted lagre number of ships in the harbour of Rabaul according to the U.S. Joint Intelligence Committee. Daily summary dated 11 August 1942

An item reported that Allied aircraft sighted on 9 August 28 large ships in the harbour of Rabaul probably including 2 cruisers.

Source

Map Room Papers (Roosevelt Administration), 1942 - 1945. U.S. Joint Intelligence Committee. Daily summary No. 244 dated 11 August 1942.