Aviatsionnaya Ispitatelnaya Stantsiya, Morskaya Vedomstva, naval air test station, founded late 1916 at Petrograd Poly Inst., with seaplane base at Krestovsky Island. Engineers P.A. Shishkov and Sushenkov planned many aircraft, 2 being built. Shishkov produced torpedo carrier of Farman pusher-biplane type, 130-hp Clerget, made several flights of over 1 hour August 1917. Aist (t added to give word meaning stork) 2-seat seaplane, with 150-hp Sunbeam and 1 fixed and 1 pivoted machine-gun, complete autumn 1917.