AeroQuiz

43rd Quiz - maximum points to earn were 6.
I think that I've found really difficult plane to recognize - soviet amphibian Michelson MU-4. Only one of all participants sent correct answer. Congratulations to Emilio!
Average mark of difficulty according to your valuation was XXX (maximum 5 - very difficult).

de Havilland Canada DHC-6 Twin Otter - a 20-passenger STOL (Short Takeoff and Landing) utility aircraft. Maiden flight 20 May 1965

Martin P6M Seamaster - was a strategic bomber flying boat for the United States Navy. Four Pratt & Whitney J75-P-2 turbojets provided 17,500 lb. (7,938 kg). Seamaster made its first test flight on July 14, 1955.

Shavrov Sh-5 - Soviet high-wing amphibian, intended for reconnaissance and patrol missions. Aeroplane was powered by two 360kW M-22 engines. The first prototype flew on 19 March 1934. Project was cancelled by the end of the year with only one prototype built.

Michelson MU-4 - Soviet two-seat wooden amphibious flying boat, intended as a trainer for Navy pilots (MU = "Morskoj Uchebnij" - Navy trainer). First MU-4 was built in 1936.

Table of Winners:

Name	Country	Points
Emilio Lafuente		6
Bill Lines		3
Peter Butt		3
Hans Høgh		3
Jean Pierre Schell		3
Emmanuel Capart		3
Neil Evans		3
Stefko		2
Juraj Andel		2
Anonymous		2