The first Komets (Do C III Komet I) utilised the wing, tail, and even upper fuselage of the early Delphin versions, but replaced the lower fuselage and sponsons with a simple sheet-metal bottom that incorporated fixed tailskid undercarriage. The engine installation was also relocated from its peculiar position above the Delphin's nose to a conventional location in the Komet's fuselage nose. Accommodation was provided for a single pilot and four passengers. An improved version, the Do Komet II, was first flown on 9 October 1922 and was widely exported to countries including Colombia, Spain, Switzerland, and the Soviet Union.
Type Prototype1 + 4 seat transport 1 + 4 seat transport
Engine 1 BMW III 1 BMW IIIa
Dimensions Length 9.10 m, height 2.50 m, span 17.0 m, wing area 47.0 m2,   cabin : length  2.0 m, height 1.6 m, width 1.2 m Length 9.50 m, height 2.75 m, span 17.0 m, wing area 50.0 m2,  cabin : length  2.0 m, height 1.6 m, width 1.2 m
Weights Empty 1100 kg, fuel 144 kg, oil 20 kg, crew 80 kg, pay load 486 kg, flying weight 1830 kg Empty 1450 kg, fuel 220 kg (285 l + 20 l emergency tank), oil 20 kg, crew 80 kg, pay load 350 kg, flying weight 2120 kg
Performance Max. speed at sea level 170 km/h, cruising speed at sea level 130 km/h, climb 2.0 m/sec. at altitude 2000 m, service ceiling 5000 m, range 520 km, landing speed 80 km/h Max. speed at sea level 160 km/h, cruising speed at sea level 130 km/h, climb 1.3 m/sec. at altitude 2000 m, service ceiling 4000 m, range 800 km, landing speed 80 km/h
Type Werk.Nr Registration History
3 (24) CH 49 First flight summer 1921, tested by the Swiss company Ad Astra in 1921 for a short period. Later rebuilt to Komet II standard
5  (30) CH 50 Leased by Ad Astra from Dornier --- 1921 - June 1922.. Rebuilt to Komet II standard
8  (45) Rebuilt to Komet II standard
Kennzeichen D-528,
Steel spar knot, both of which  are in D,  connected by uprights oblique U-shaped, forming a Warren beam.