The Arado Ar 233 was a 1940s German design for a civil twin-engined amphibian flying boat developed by Dewoitine in France under the control of Arado Flugzeugwerke.
Arado Ar 233 Wikipedia
The Ar 233 was a twin-engined flying-boat with room for ten passengers, it would have been powered by either two BMW 323 or BMW 801 engines. A retractable tricycle landing gear would allow amphibious operation. A mock-up was completed by Dewoitine in German-occupied France but the project was abandoned due to the Liberation of France in 1944.
Data from Jane's Fighting Aircraft of World War II
General characteristicsCapacity: 10 passengers
Powerplant: 2 × BMW 323 or BMW 801 piston engines, not known kW (not known hp) each
PerformanceCruising speed: 304 km/h (190 mph)
Range: 1200 km (750 miles)