The Sh-1 remained a prototype, being developed into the slightly larger and refined Sh-2, whose first test flight, made from land, was on 11 November 1930. The type later met severe requirements both for operation from water and land and was built in quantity, production being quoted from 300 to 700 according to source. The Sh-2 served throughout the Soviet Union as a utility transport, for liaison, and as a trainer, and for many years was used on fishery protection duties and frontier patrol work. They supported Arctic operations and 16 were built under the designation Sh-2S as air ambulances carrying one or two stretcher patients. In 1939 Aeroflot built additional Sh-2s from available spares and later the type was reinstated in production. As well as use for the civil roles indicated, the Sh-2 was flown by the V-VS as a general-purpose aircraft. A number of later machines had a glazed crew cabin and other refinements, becoming redesignated Sh-2bis most had improved M-11L engines.

3-View

A three-view drawing (900 x 595)