bonajet:
Sorry not to reply sooner, but have only just got back on the 'net. VH-ACD Clifton crashed on landing in Rose Bay on 18 November 1944 - the last of the Empire Boats to be lost. I am not sure what the cause was, it could have been a wire strike.
VH-ABB Coolengata was lost in the same place on landing on 11 October 1944 - the penultimate Boat lost.
The other Boat you show is the longest serving VH-ABA Corialanus. Registered on 1 March 1937 and taken out of service in December 1937 after having flown for 1,500 hours.