|Function||Maritime reconnaissance, Ice monitoring|
|Type||Lorraine - Dietrich||BMW - VI||M-17F|
|Takeoff Power (hp)||?||730|
|Cruise Power (hp)||450||500|
|Wing area (m2)||94.5||96.59|
|Weights and loads|
|Wing Load (kg/m2)||67||74||73|
|Power load (kg/hp)||7.0||5.4||5.4|
|Maximum at 0m||180||186||210|
|Cruising at m||140||155||160|
|Position||Bow & dorsal|
|Bombs||4*50kg on underwing racks|
The "Wal" was designed as a passenger flying boat for oceanic use and later found use as a military flying boat for patrol and search-and rescue duties. It featured a very rugged metal construction which made it ideal for long distance pioneering flights. Even the Norwegian polar explorer Roald Amundsen made use of this flying boat's great reliability and range during his expedition to the North Pole. Aircraft strong flat hull allowed reliable takeoff from ice and snow. Safe landing to the unprepared ground also was a possibility.
First aircraft of "Wal" family took of on November 6, 1922 at Italy. Trial outcome was so impressive, that company immediately invested large capital into mass production. Actually, the Spanish Air Force ordered six boats even before a single Dornier Wal had been constructed. No more than a look at the blueprints was enough to convince customers!
Until 1931 most of the production took place in Italy (Pisa) because all aviation activity in Germany was prohibited by the Treaty of Versailles after World War I. Special company (Costruzioni Meccaniche Aeronautiche S.A.) had been founded especially for the purpose. Later "Wal" was built by CASA in Spain, Kawasaki in Japan, Aviolanda in the Netherlands. In 1929 production started at the Dornier Company of America in the USA.
Small scale production was undertaken in the USSR, where Sevastopol Aircraft Repair shops assembled 6 aircraft in 1931 - 1933. Production totaled over 300 aircraft. Wal boats were flying in the USSR until the late 30s as reconnaissance and bombing aircraft, on a large scale also for civil purposes.
Batch of 20 Dornier Wal was ordered by USSR in 1926. Delivery started in April-May 1928. First 3 were test-flown by pilot Romashkin. R.L.Bartini participated in the acceptance trials as engineer of 60th Black Sea ESCADRILIA. Black Sea Fleet in May 22 - August 11 1928 received 11 planes equipped with bomb sight V-200 (Hertz-Boykov).
July 16 - August 15 1928 A.A.Volynskij team tested Dornier Wal at Soviet North. Wal was flown from Vladivostok to Dezhnev peninsula following the shoreline. First three aircraft of Polar Aviation were Wal, later joined by YuG-1 (Ju-24). In 1933 Levanevskij flew Dornier Wal (N-8 designation) during reconnaissance flight along future course of his ill-fated effort to reach America over the Pole.