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Dornier Komet / Merkur

The Dornier Komet, Merkur, Do C, Do D, and Do T were a family of aircraft manufactured in Germany during the 1920s, originally as small airliners, but which saw military use as well.

The earliest aircraft in the series were basically landplane versions of the Delphin flying boat, and although the Delphin and Komet / Merkur series diverged from each other, design changes and refinements from one family were often incorporated into the other.

All variants were braced high-winged single-engine monoplanes with conventional landing gear.


Do C III Komet I

First of the Komet series

Do Komet II

Do Komet III

larger, more powerful four-six passenger version.

Do B Merkur I

Do B Bal Merkur II

Do C

Military version of the Komet III

Do C-1

Two-seat fighter.

Do C-2A

Reconnaissance version.

Do C-3

Reconnaissance version.

Do C-4

Do-10, development of C-1.

Do D

A much revised floatplane torpedo bomber version for the Royal Yugoslav Air Force

Do T

An ambulance version.





Eight passengers


12.5 m (41 ft 0 in)


19.6 m (64 ft 4 in)


3.56 m (11 ft 8 in)

Wing area

62.0 m2 (667 sq ft)

Empty weight

2,100 kg (4,630 lb)

Gross weight

3,600 kg (7,937 lb)


1 × BMW VI water-cooled V-12 engine, 450 kW (600 hp)


Maximum speed

200 km/h (120 mph, 110 kn)

Cruise speed

180 km/h (110 mph, 97 kn)


750 km (466 mi, 405 nmi)

Service ceiling

5,200 m (17,100 ft)




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