First four prototypes of the machine were took aloft in March, 1935, but civil boats has been constructed only 6, the others 148 machines with production deliveries to "Luftwaffe" since 1938 .
The basic military modifications - Do-18D with diesel engines "Jumo-205D" (600 hp), (75 machines in three versions), improved version Do-18G and six-seater educational boat Do-18H (71 machine of both types).
Subsequently most part Do-18G has been reconstructed under project Do-18N in a saving airplane.
|Wing span, m
|2 × PE Jumo-205D, hp
|Weight, kg: |
|Maximum takeoff weight
|Maximum speed, km/h
|Time to level 2000m, min
|Service ceiling, m
|Service range, km
|20-mm cannon, 13-mm machine gun in the nose, external bomb load, kg