Business Insider:

Since Russia’s first Yasen-class nuclear-powered guided-missile submarine, Severodvinsk, entered service in late 2013, two decades after its construction began, other subs of the class have followed at quicker intervals, and Russian leaders are now considering adding even more of these subs to a fleet that has already impressed and worried NATO commanders with its ability to avoid detection and strike at valuable targets.

The second sub of the class, Kazan, was laid down in July 2009 and commissioned in May 2021. It was followed by Novosibirsk, laid down in July 2013 and commissioned in December 2021, and Krasnoyarsk, which was laid down in July 2014 and is reportedly set for delivery in late 2022.

More Yasen-class keels may be laid later this year, a person in Russia’s defense industry told state media this month, adding that Moscow is considering adding two subs to the nine already built or planned.

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