The Kara-Winter-2014 Ice Expedition organized by the Arctic Research and Design Center (a joint venture of Rosneft and ExxonMobil) with expert support from the Arctic and Antarctic Research Institute Federal State Budget Institution was successfully finished. It has become the largest expedition in the Arctic Ocean since the USSR collapse. Within 63 days scientists have been studying least developed areas of three northern seas: the Laptev, Kara, and East-Siberian Seas on board the Yamal Ice-Breaker. The works have been also carried out off the coast of Novaya Zemlya, Severnaya Zemlya archipelagoes, and De Long Islands. There have been carried out ice and meteorological measurements at 35 stations.