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.)
Novaya Zemlya all haste for Novaya Zemlya, hoping that no German ships had arrived there before us. If they had, and it was thought that escape by sea was impossible, then the three trawlers would be run ashore on one of these God-forsaken islands. We could then salvage what we could from them and try to make our way overland and the sea ice, until we found a settlement, or until we reach the Russian mainland…not a very charming or happy prospect to look forward to. When the "Northern Gem" approached Novaya Zemlya and neared the entrance to Matochkin Strait, it quickly