Vladimir Monomakh submarine of the Project 955 Borey class returned to Severodvinsk on September 14, 2015 after four days at sea. The submarine left the port on September 10 and, according to notifications issued by Russia, was scheduled to launch a Bulava missile from the White Sea some time between 11 and 15 of September. However, since there was no report of the launch it is reasonable to assume that something did not go according to the plan.