8 September 2015, 06:09 GMT
MOSCOW (Sputnik) — The first single-missile launch will be carried out from the Vladimir Monomakh strategic submarine, while the second will be a two-missile salvo from the Alexander Nevsky and the Vladimir Monomakh subs, the source told RIA Novosti on condition of anonymity.
Both vessels are the Borei-class nuclear-powered ballistic missile submarines in service with the Russian navy.
"The launches are scheduled for October-November," the source said.
