Tsar Bomba C), north of the Arctic Circle over the Novaya Zemlya archipelago in the Arctic Ocean. The bomb was dropped from an altitude of ; it was designed to detonate at a height of over the land surface ( above sea level) by barometric sensors. The original, November 1961, United States Atomic Energy Commission estimate of the yield was 55–60 megatons, but since 1992, all Russian sources have stated its yield as 58.6 megatons. First secretary Khrushchev warned in a filmed speech to the Supreme Soviet of the existence of a 100-megaton bomb (technically the design was capable of this yield.)
Vladimir Rusanov Ocean via the Northern Sea Route. Their ship "Gerkules" was too small for the kind of expedition Rusanov had in mind. The last to be heard of Rusanov's expedition was a telegram left at Matochkin Shar on Novaya Zemlya, which reached St. Petersburg on 27 September 1912. In it, Rusanov indicated that he intended rounding the northern tip of Novaya Zemlya, and heading east across the Kara Sea but nothing was heard from the "Gerkules" thereafter. He and his 11-man team, including Alexander Kuchin, disappeared without trace a year later in the Kara Sea, off the northern coast of Siberia.