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Event Brief

Typhoon-class SSBN could stay under Arctic ice 120 days

The Soviet Union’s Typhoon-class ballistic missile submarine (Project 941/Akula) displaced about 48,000 tons submerged and was about 175 meters long. It carried 20 R-39 missiles with up to 10 warheads each and was designed to remain under Arctic ice for 120 days without surfacing, with internal space including a heated seawater pool, sauna, gym, and solarium. Six were built; the last was decommissioned on 6 February 2023.
WHO: Soviet Navy; Sevmash yard (Severodvinsk)
WHAT: Typhoon-class SSBN design details: 120-day Arctic-ice endurance and internal facilities
WHEN: Reported Sep 11, 2026 at 7:40 AM ET
WHERE: Severodvinsk, Russia
WHY: The article describes the submarine’s design and operational endurance, culminating in the decommissioning of the last vessel.

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