From my files,and a part of it was from this site,
in 1943 - after the interruption of the construction work on the large
eight-engine flying boat Do.214- the Dornier works developed another
project of a slightly smaller, lighter and simpler flying boat, designated
by the factory as
P.174 , and by the Reichsluftfahrtministerium as
Do 216 .
The aircraft was modelled on its predecessor, but a less complex, single-
deck fuselage design was envisaged. The three-section wing was to have
a rectangular centre wing and trapezoidal outer sections. As in the Do 214,
Dornier designers dispensed with the stabilising floats under the wings,
and their role was to be fulfilled by long protrusions on the fuselage
waterline, stabilising the huge aircraft on the water while swimming.
Regardless of this, the wingtips were bent downwards and formed into
floats to additionally stabilise the aircraft during large rolls in rough seas.
The aircraft was to be powered by either four Junkers Jumo 222 diesel
engines with a take-off power of 2,500 hp each (in the version designated
P.174/I or
Do 216/1 ), placed in pairs in two gondolas on each wing in
an arrangement of two pulling and two pushing engines, or six Daimler-
Benz DB 603C petrol engines (in the
P.174/II version - otherwise
Do 216/2 )
with a power of 1,750 hp each, with these additional two engines to be
mounted in a pulling arrangement in gondolas outside the previous pair
of engines. The aircraft was to serve as a multi-purpose long-range combat
aircraft for patrol, reconnaissance and combating sea targets, and therefore
it was intended to be equipped with eight gunnery positions and bomb
launchers under the outer parts of the wings.
The Do 216 flying boat - like its predecessor - did not progress beyond
the design stage, as the RLM soon lost interest in this type of design as
it was completely useless from the point of view of the needs of the
Reich's defence.