Dornier DO 11 and Dornier DO 15

Dornier DO 11 and Dornier DO 15

Photo 1 is a port side view of a flying DO 11 heavy bomber.
Photo 2 is a starboard side view of a DO 15 on a ship' launch ramp.

Two b/w photographs on an album page

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PThomasAF20060031

[Photograph]

Dornier DO 11.
The existence of the previously clandestine Luftwaffe was officially proclaimed on March 1st 1935. To overcome the restrictions of the Treaty of Versailles Germany had set up manufacturing facilities for aircraft in Italy & Switzerland, the Swiss branch at Altenrhein, established in 1927, being involved in heavy bomber development, producing a DO P powered by Bristol Jupiter engines. The DO P was followed by the DO Y & the DO F, the DO F being re-classified as the DO 11 during 1933. By the end of 1934 a total of 77 DO 11’s were in service, although the flying characteristics of the bomber left much to be desired. In 1935 the DO 23 began to replace the DO 11 & they were relegated to training duties & a small number were supplied to the Bulgarian Air Force.

[Photograph]

Dornier DO 15 Wal.
Deutscher Lufthansa used the DO 15 Wal over its airlines South Atlantic Mail Service. Some 30 of the military version of the Wal had been supplied to the Luftwaffe before production was phased out in favour of the DO 18. The DO 15 remained in service until 1938, them [sic] being used as training machines & for test purposes. Powered by two BMW V1 12 cylinder liquid cooled engines. Maximum speed 137 mph.