The U.S. commander responsible for North America and the Navy’s top officer warned lawmakers this month about Russia’s increasingly capable and active submarines, which they say are operating closer to U.S. shores.

Air Force Gen. Glen VanHerck and Navy Adm. Michael Gilday are the latest officials to express concern about Russia’s submarine fleet, which is smaller than its Soviet predecessor but has improved considerably in recent years.

Asked about threats “below the nuclear threshold” at a June 15 House Armed Services subcommittee hearing, VanHerck — who leads U.S. Northern Command and NORAD — said Russia and China are “developing capabilities” below that threshold “to hold the homeland at risk.”

“Those capabilities would include very quiet submarines,” VanHerck said. “Russia just fielded their second Sev-class submarine, which is on par with ours.”

Russia submarine Arctic
Russian Yasen-class submarine K-560 Severodvinsk. (Russian Ministry of Defense)

VanHerck appeared to be referring to Russia’s Yasen-class nuclear-powered attack submarines, which NATO calls the Severodvinsk class. The second Yasen-class boat, Kazan, was commissioned on May 7.

Kazan is also the first sub of the Yasen-M sub-class, which has upgrades such as new quieting technology and a quieter reactor. Russia plans to add five more Yasen-Ms to its fleet by the end of the decade.

“Within a five-year period or so, they’ll have eight to nine of those submarines, which will be a persistent, proximate threat off of our East and West coast that we haven’t had ever in the past,” VanHerck said.

At a House Armed Services Committee hearing on June 17, Gilday, who is chief of naval operations, defended the Navy’s request for only eight new ships in 2022 by citing Russian submarine activity.