Moscow’s state-owned shipyard Sevmash has laid the keel for the Russian Navy’s 10th Yasen-class nuclear-powered attack submarine, the Murmansk, marking the formal start of the vessel’s construction.
The platform takes its name after the country’s key strategic port in the northwest region, with the designation approved by Commander-in-Chief Alexander Moiseyev.
The initiative proceeds alongside three other Yasen-class boats under construction and ongoing sea trials for another vessel.
Including the Murmansk, Sevmash is currently completing a total of 12 hulls under the program.
Moscow commissioned the effort’s lead submarine in 2014, while the most recent platform joined the fleet in January 2025.
At the ceremony, Moiseyev said the Yasen class signifies “the most advanced achievements of Russian science and technology” and described the boats as “modern, effective naval combat systems” capable of operating globally while remaining concealed.
He added that submarine forces remain central to Russia’s naval capability and broader security posture, expressing confidence that the vessel will be completed “on time and to a high standard.”
The Yasen-Class Submarine
The Russian Navy’s Yasen system was conceptualized in the 1980s to replace the Oscar and Akula submarines developed throughout the Soviet era.
The vessel then received a major design overhaul in the 2000s to further match evolving threats, leaving the program’s first hull, the Severodvinsk, in the base configuration.
Yasan measures 130 meters (427 feet), has a beam of 13 meters (43 feet), and a capacity for over 60 personnel.
It is armed with multiple sensor systems, 533mm torpedoes, air defense missiles, naval mines, as well as hypersonic, anti-ship, and land-attack cruise missiles.
The ship is equipped with an OK-650KPM pressurized water reactor with an output of 43,000 horsepower for an unlimited range, a top speed of 35 knots (40 miles/65 kilometers per hour), and a maximum depth of 1,800 feet (549 meters).
