sentences:  Between 1974 and 1979, he worked in the Western sector of the Arctic as head of the Amderma Administration of hydrometeorology and environmental control.Under his direction, new forms of Arctic operative navigation support were implemented; for the first time, experimental work on cargo transfers to fast ice during wintertime were carried out in the Yamal Peninsula.Chilingarov summarized his experience in navigation support on the Northern Sea Route in his dissertation for the scientific degree of a kandidat of geographical sciences.