Soviet-era Development of the Northern Sea Route (1932–1991)

1. First one-season Northern Sea Route crossing

   Oct 1, 1932Labels: Aleksandr Sibiryakov, Northern Sea

   • Britannica
   • WHOI History

2. Glavsevmorput created to manage the NSR

   Dec 17, 1932Labels: Glavsevmorput, USSR Ministry

   • Glavsevmorput
   • PresLib

3. Chelyuskin sinks, highlighting NSR risks

   Feb 13, 1934Labels: Chelyuskin, Northern Sea

   • Chelyuskin
   • WHOI History

4. Litke completes one-season NSR passage east-to-west

   Jun 28, 1934Labels: Fyodor Litke, Northern Sea

   • Litke
   • WHOI History

5. First Murmansk–Vladivostok commercial voyages

   Oct 8, 1935Labels: Murmansk Vladivostok, Soviet cargo

   • Litke
   • WHOI History

6. North Pole-1 drifting station established

   May 21, 1937Labels: North Pole-1, Drifting station

   • NP 1
   • Nature 1938

7. Arctic convoys begin supplying the USSR

   May 21, 1942Labels: Arctic convoys, Allied supply

   • PQ 16
   • JW 51A

8. Nuclear icebreaker Lenin enters operation

   Jan 1, 1959Labels: Lenin icebreaker, Nuclear icebreaker

   • Lenin
   • TASS Fleet

9. Glavsevmorput dissolved as NSR governance changes

   Jan 1, 1964Labels: Glavsevmorput, Soviet administration

   • Glavsevmorput
   • AARI

10. Arktika commissioned, expanding nuclear icebreaking capacity

    Apr 25, 1975Labels: Arktika icebreaker, Nuclear fleet

    • Arktika
    • Arktika Class

11. Arktika reaches the geographic North Pole

    Aug 17, 1977Labels: Arktika icebreaker, North Pole

    • Guinness
    • Arktika

12. Sibir commissioned, strengthening Arktika-class fleet

    Dec 28, 1977Labels: Sibir icebreaker, Arktika class

    • Sibir 1977
    • Arktika Class

13. Northern Sea Route opened to international navigation

    Jan 1, 1991Labels: Northern Sea, International navigation

    • PresLib
    • NSR