The Do-26
Total production: 6 machines of which only 3 were delivered with a civil scheme.
As this one comes from a german site, the tail has been censored a bit (but everyone knows that these Lufthansa tail colors came with the swastika...)

Chekcing the engines after a flight...

Landing configuration, the rear engine pair tilts up to prevent spray damage

I love my 4 diesel engines...

Amphibious Sikorsky thingie... looks fragile compared to

The Shorts Empire flying boat