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 due south. Anticipating the breakout, the German Task Force commander Rear Admiral Hubert Schmundt (Fig. 40) pre-positioned several U-boats near the strait’s western entrance. Six of the seventeen Allied ships exiting the strait were subsequently sunk. The badly-damaged American freighter "Alcoa Ranger" was beached on Novaya Zemlya’s west coast. Its crew found temporary shelter and were eventually rescued by a Russian vessel which took them to Belushya Bay. The Germans also damaged the Soviet tankers "Donbass" and "Azerbaijan," both of which reached the sanctuary of Archangel. Of the thirty-four merchant ships in PQ-17, twenty-four were destroyed. The American contingent alone