The F.III-W was not designed as seaplane, but merely a trial version with an existing F.III land based airplane.

F.III cn 1600, which was shipped to the USA as a land based plane, had the landing gear removed and after a re-calculation of the center of gravity, appropriate floats were mounted underneath.

The rudder was enlarged and a dorsal fin was added to the back of the fuselage.

It remained a as a test and never went into production, probably due to lack of interest.

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