10/31/2009. Remarks by Johan Visschedijk: "Production of three of this flying boat was started in 1929, due to lack of orders only D-1967 was finished. Depending on the layout 22 to 30 passenger could be seated in the main cabin, while the four crew occupied the upper deck, although the two pilots were seated in the open. Fitted with four 640 hp Hispao-Suiza 12 Lbr twelve-cylinder liquid-cooled V-engines the aircraft was first flown on March 29, 1930.

Subsequently the aircraft was used in the testing of hydrofoils to reduce the shockload force during take off and landing. In 1933 the aircraft was obtained by the DVS at List on the isle of Sylt, however, the Do S Has was written off in 1935 after an accident in the Baltic."

Span: 23 ft 7.5 in (31.00 m)
Length: 20 ft 4.1 in (25.75 m)
Height: 7 ft 7.7 in (7.85 m)
Wing area: 150.7 sq.ft (186.0 sq.m)
Weight empty: 794 lb (9,100 kg)
Max T/O weight: 1,261 lb (15,000 kg)
Max speed: 90 mph (205 kmh)
Landing speed: 37 mph (90 kmh)
Service ceiling: 9,843 ft (2,700 m)
Range: 224 mls (1,000 km)