Key Points – Russia’s Poseidon (Status-6) is a nuclear-powered, nuclear-armed autonomous underwater vehicle (AUV) or torpedo, designed to overcome US missile defense systems.
-Unveiled by President Putin in 2018, it reportedly can travel at high speeds (54 knots) and great depths (1,000m).
-Poseidon is intended to deliver a massive nuclear warhead, potentially a cobalt bomb, capable of causing widespread radioactive contamination or a “nuclear tsunami” against coastal cities.
-While some analysts view it primarily as a psychological weapon for nuclear signaling, its deployment on submarines like the Belgorod signifies a serious Russian strategic capability, developed partly in response to the US withdrawal from the ABM Treaty.
Russia’s Poseidon, A Nuclear-Armed Port Killer
Russia’s Poseidon torpedo, officially named the Status-6 Oceanic Multipurpose System, is a nuclear-powered, autonomous underwater vehicle (AUV) capable of delivering a nuclear warhead.
It’s designed to operate in the ocean and is believed to be capable of high speeds (54 knots) and deep dives, with a maximum depth of 1,000 meters (3,300 ft).
The Poseidon, previously known by the Russian codename Status-6, is a nuclear-powered and nuclear-armed unmanned underwater vehicle under development by Rubin Design Bureau, capable of delivering both conventional and nuclear payloads. The Poseidon is one of the six new Russian strategic weapons unveiled by Russian President Vladimir Putin on March 1, 2018.
The Poseidon is designed as an asymmetric counter to US missile defense systems, including anti-ballistic missiles, railguns, and laser weapons, thereby ensuring Russia’s capability to overcome such systems.
The Poseidon warhead can contaminate a large area with radiation. According to NukeMap simulations, the size of the radioactive area will be approximately 1700 × 300 kilometers.
For this purpose, Poseidon is believed to be equipped with a toxic cobalt bomb containing cobalt-60.
Usage Was Built Into Poseidon’s Design
Nuclear scientists speculated that the Poseidon was developed in response to advances in US ballistic missile defense capabilities. In March 2018, Russian President Putin stated that Poseidon and other advanced weapons were developed in response to the demise of the 1972 US-Soviet Anti-Ballistic Missile Treaty, which Putin described as “the cornerstone of the international security system.”
After the United States pulled out of the treaty in 2002 to build its new national missile defense system, Russia started working on improving its military equipment and weapons to maintain a strong nuclear deterrent capability against US assets.
After the Cold War, the US moved its defenses away from nuclear weapons, and Russia took the opposite track. Russia continued to rely on nuclear weapons greatly and even adopted a nuclear doctrine of “escalate to de-escalate,” which consists of using nuclear coercion and messaging tactics to achieve strategic goals.
The development and deployment of new nuclear weapons like the Poseidon are considered to contribute to Russia’s broader strategy of nuclear coercion.
However, in the early 1960s, during the height of the Cold War and around the time of the Cuban Missile Crisis, the United States had a very similar outlook.
“We may seek to terminate a war on favorable terms using our [remaining] forces as a bargaining weapon—by threatening further attack … our large reserve of … firepower would give an enemy an incentive to avoid our cities and to stop a war.”
This quote was from US Secretary of Defense Robert McNamara in 1962, explaining the US strategy to use limited nuclear strikes to de-escalate a conflict through “deliberate escalation,” specifically in situations where NATO non-nuclear forces could not successfully defend against a Soviet attack.
Retaliatory or First Strike Weapon?
While both US and Russian officials have described Poseidon as a new category of retaliatory weapon, capable of triggering radioactive ocean swells to render coastal cities uninhabitable under what could be a nuclear tsunami, but is it truly retaliatory, or could this be part of a first strike?
“The first set of Poseidons have been manufactured, and the Belgorod submarine will receive them in the near future,” TASS, a state news agency, quoted the source as saying.
TASS reported that the main components of Poseidon, including a nuclear reactor to provide the torpedo with its power source, had been completed. The crew of the Belgorod nuclear submarine has also completed tests with models of the torpedo, TASS said.
Putin’s Fixation With Nuking The West: Truth or BS?
According to TASS, the Russian Navy intends to purchase at least 30 Poseidon torpedoes and deploy them on four submarines.
Reuben F. Johnson noted: “The Kremlin today retains an even more pronounced and seemingly psychotic fixation with destroying American cities by showering them with radiation. It is an obsession that remains on the Russian leadership’s list of priorities even to this day.
“Since Moscow’s invasion of Ukraine in February 2022, either Russian President Vladimir Putin (or one of his surrogates) has surfaced at regular intervals to warn the West of how he plans to use nuclear weapons against the West if he somehow feels appropriately “threatened.”
“In the past few years, these threats have escalated as the development of platforms that could carry out this doomsday mission – once the preserve of the November subs – has been steadily feeding Putin’s diatribes about annihilating the West.”
Still, many nuclear scientists see Poseidon primarily as a psychological weapon intended for nuclear signaling rather than for its actual use.
Some even believe that the Poseidon will remain at the prototype stage and serve mainly political objectives, such as renewed talks with the United States on ballistic missile defense systems. The weapon’s primary intent may be in the uncertainty, speculation, and fear it can provoke.
The US can’t take that approach and plan accordingly.
About the Author:
Steve Balestrieri is a National Security Columnist. He served as a US Army Special Forces NCO and Warrant Officer. In addition to writing on defense, he covers the NFL for PatsFans.com and is a member of the Pro Football Writers of America (PFWA). His work was regularly featured in many military publications.
Russia’s Submarines
securocrat
June 4, 2025 at 10:08 am
Poseidon is a good weapin system. Especially for other countries that are ranked high at the top of the hitlist.
The weapon can be transferred to the required place, or chokepoint weeks or months prior, and as soon as the target, for example, the queen elizabeth II aircraft carrier passes by, boom !
The way the weapon works provides ground for claiming plausible deniablity.