The Soviet Union built massive submarines specifically to hunt down NATO carrier battle groups.

Cultures · Published 10 October 2026 · Updated 25 October 2026 Swipe more like this →

In short: Designed to neutralize Western naval dominance, the Oscar-class submarine remains a formidable piece of Cold War engineering. These nuclear-powered giants, once the largest cruise-missile vessels in service, were built to strike from long range. Today, they are undergoing extensive modernizations to remain relevant in a new era of maritime warfare.

The Oscar class, comprising Project 949 Granit and the improved Project 949A Antey, was conceived in the 1970s as a specialized weapon against NATO carrier battle groups. To track these targets, the submarines relied on the EORSAT satellite system, receiving data via a specialized Punch Bowl antenna. Armed with 24 long-range P-700 Granit anti-ship missiles, they were built for a singular, high-stakes mission. Their design features a double-hull construction and a distinct bulge on the fin, which likely houses an emergency escape capsule capable of accommodating 110 people.

Following the collapse of the Soviet Union, the Russian Navy prioritized the Oscar class even as other vessels were retired. While the original Project 949 boats were decommissioned by 1996, the 949A variant remains active. Modernization efforts, initiated around 2011, aim to upgrade these vessels to the technological standard of newer Yasen-class submarines. This includes replacing the original P-700 missiles with up to 72 modern 3M-54 Kalibr or P-800 Oniks cruise missiles, alongside significant overhauls to sonar, radar, and fire-control systems.

Beyond standard combat roles, the hull of the Oscar class has been adapted for unique purposes. The Belgorod, a special-purpose vessel based on an incomplete 949A hull, was delivered to the Russian Navy in 2022. At an estimated 184 metres, it is considered the longest submarine in the world. It is designed to carry unmanned underwater vehicles, including the rumored Poseidon nuclear-powered device, potentially replacing traditional missile launchers with a massive thermonuclear payload. These adaptations highlight the enduring versatility of the original Soviet design, which continues to evolve decades after its inception.

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