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Do-24 was built by Dornier to a Dutch specification for service in the East Indies. Just as the Mustang was originally built to a RAF specification.
Everything I have read suggests the Dutch seaplane performed well. A few must have fled the East Indies and ended up in Australia after Japan invaded.
View attachment 214099
A number of NEI Do 24 Aircraft arrived at Broome, Western Australia after the fall of the Dutch East Indies.
Here are some articles on the arrivals and massacre in subsquent attack by the IJN
Air Raids - Broome
http://www.cdu.edu.au/newsroom/origins/edition1-2008/battle-of-broome.pdf
Regards
Alan
A couple of pics taken years ago of the last surviving Emily when it was at the Museum of Maritime Science in Tokyo - it's since been moved.
Very slender lady
What's so unusual about the Do-24? To me it appears a well designed medium range flying boat.