great photos Tawhiri, thanks for sharing,
came across this picture which is was same time of s23 centaurus , for those who like a good read there is a great book about c class flying boat "Corsair" by Graham Coster
https://www.flickr.com/photos/27862259@N02/6187728239
(there are also a few more pictures of Centaurus on that flicker page if you arrow forward)