Russia's initial Borei-class ballistic missile submarine has been placed on active duty, Naval Technology reported on Tuesday.
Russia spent $713 million to build the Yuri Dolgoruky, which can be loaded with as many as 16 nuclear-tipped missiles. The vessel is to carry the Russian navy's new Bulava ballistic missile.
The Borei-class submarine Alexander Nevsky is being tried out at sea and could begin active operations next year in the navy's Pacific Fleet, according to RIA Novosti. The Vladimir Monomakh, meanwhile, has been placed in the water while construction continues.
A total of eight Borei and Borei A-class submarines are to be constructed before 2021.