The second Russian Borey-class nuclear missile submarine, Alexander Nevsky has entered into service with the Russian Navy today, according to RIA Novosti.
The Russian Defense Ministry said last month the boat's acceptance would be delayed until next year following a mishap during a test-firing of a Bulava nuclear ballistic missile in September.
The missile – developed specifically for the new Borey-class – has suffered a string of failures in tests and is still not operational, a senior naval officer was quoted as saying in the report.
The Borey class, the Russian Navy's first post-Soviet ballistic missile submarine design, will form the backbone of the fleet's strategic nuclear deterrent force after older boats are retired by 2018. Russia expects eight of the boats to enter service by 2020.
The third boat in the class, the Vladimir Monomakh, is currently undergoing acceptance trials and is expected to be commissioned in 2014. A fourth boat is now under construction at Sevmash.