Aircraft sighted nothing during flights Rabaul-Moresby according to the C.O.I.C. Daily Summary of Operational-Intelligence dated 1 August 1941

An item reported a transit flight by a Catalina between Rabaul-Moresby, New Guinea and by an Empire Flying Boat between Moresby-Rabaul without sighting something.

Source

Royal Australian Navy Website. The Combined Operational Intelligence Centre (COIC) supplied so-called 'hot' intelligence to the Central War Room (CWR), New Zealand and Singapore. Website https://seapower.navy.gov.au/publications