"blueness"), code RSM-54, is a Russian liquid-fueled submarine-launched ballistic missile with GRAU index 3M27, designation SS-N-23A Skiff.

[citation needed] It can carry four warheads and is designed to be launched from Delta IV-class submarines, which are armed with 16 missiles each.

[9] The development of the Sineva is part of a program tasked with "preventing the weakening of Russia's nuclear deterrent.

March 1, 2004 saw then Russian president Vladimir Putin instructing the acting defence minister to carry out an investigation in order to determine the reason of the launch failures of the three RSM-54 missiles in mid-February.

President Vladimir Putin and Defense Minister Sergei Ivanov observed a successful test launch of the Sineva missile from K-84 Yekaterinburg.

[12] On 5 November 2014, Tula hit targets at the Kura Test Range firing from the Barents Sea.