MOSCOW (AP) — The Russian navy says its submarines have increased combat patrols to the level last seen during the Cold War.

An view of a Russian Navy Northern Fleet DELTA IV class nuclear-powered ballistic-missile submarine, supposedly the K-18 "Karelia," January 1, 1994. Wiki Commons

MOSCOW (AP) — The Russian navy says its submarines have increased combat patrols to the level last seen during the Cold War.

The navy chief, Adm. Vladimir Korolyov, said Friday in remarks carried by state RIA Novosti news agency that Russian submarine crews spent more than 3,000 days on patrol last year, matching the Soviet-era operational tempo.

Korolyov spoke after attending the launch of a new Yasen-class nuclear-powered attack submarine called the Kazan.

The Russian military had fallen on hard times after the 1991 Soviet collapse when it was forced to scrap many relatively new ships and keep most others at harbor for lack of funds. The military has revived its strength thanks to a sweeping arms modernization program amid tensions with the West over Ukraine.