In 1929 and 1930 icebreaker Sedov carried groups of scientists to Franz Josef Land and later to former Emperor Nicholas II Land, the last major piece of unsurveyed territory in the Soviet Arctic. In 1926 the Presidium of the Central Executive Committee of the USSR had renamed the still not fully explored land Severnaya Zemlya  (Northern Land).
In 1929 and 1930, the icebreaker Sedov transported scientists to Franz Josef Land and later to former Emperor Nicholas II Land, the last major uncharted territory in the Soviet Arctic. In 1926, the Presidium of the Central Executive Committee of the USSR renamed the land still being explored Severnaya Zemlya (Northern Land).