Russia Launches Khabarovsk Submarine, Carrier for Poseidon Drone

Russia on 1–2 November 2025 launched the nuclear-powered submarine Khabarovsk from the Sevmash shipyard in Severodvinsk. Officials described the class as a carrier for advanced underwater weapons and robotic systems, and Russian media and defence sources say these submarines are intended to carry the nuclear‑powered unmanned underwater vehicle known as Poseidon.

Key technical and program points

• Platform and yard: Khabarovsk was launched at Sevmash (the Russian shipyard known for major submarine programmes) and designed by the Rubin Central Design Bureau.
• Intended payload: Russian statements and media reporting identify the submarine as meant to carry Poseidon unmanned underwater vehicles and other robotic underwater systems.
• Poseidon claims: Russian briefings describe Poseidon as nuclear‑powered, able to operate at great depths and high speed, with intercontinental range and very large destructive potential when armed—claims that Western analysts treat with scepticism and concern.

Why analysts and governments are concerned

• Poseidon is framed by some Russian officials and commentators as a strategic, asymmetric weapon with the potential to deny access to coastlines and to threaten port cities with massive radioactive damage.
• Such a capability, if operational as described, would represent a novel and destabilising addition to strategic arsenals and raise serious arms‑control, humanitarian and environmental issues.
• Independent verification of the full technical capabilities of Poseidon remains limited and contested.

Static facts

• Submarine launched: Khabarovsk (launched early November 2025)
• Shipyard: Sevmash, Severodvinsk (Russia)
• Designer: Rubin Central Design Bureau of Marine Engineering
• Intended payload: Underwater weapons and robotic systems; reported primary carrier for Poseidon UUV
• Poseidon characteristics (Russian claims): Nuclear‑powered UUV, high speed, deep‑diving, intercontinental range; tested successfully (October 2025 claimed).
• Context: Launch follows publicised Russian tests of the Poseidon system and other strategic systems earlier in 2025.