Australian Coastwatcher, LEUT P. E. Mason, RANVR, signalled from Buin:- ‘At least 61 ships this area viz 2 Nati, 1 Aoba, 1 Mogambi, 1 Kis, 1 Tatsuta, 2 sloops, 33 destroyers, 17 cargo, 2 tankers, and 1 passenger liner of 8000 tons’. Mason identified the cruisers by their class names from a page of Jane’s Fighting Ships.