| R-29RMU2.1 Laynar | |
|---|---|
| Type | SLBM |
| Place of origin | Russia |
| Service history | |
| In service | 2014–present |
| Used by | Russian Navy |
| Production history | |
| Designer | Makeyev Rocket Design Bureau |
| Manufacturer | Krasnoyarsk Machine-Building Plant |
| Specifications | |
| Mass | 40 tons |
| Length | 15 m |
| Diameter | 1.9 m |
| Warhead | 4 × 500kt or 12 × 100kt multiple thermonuclear warheads[1] |
| Engine | Three-stage liquid-propellant rocket |
Operational range | 8,300-11,000 km[citation needed] |
Guidance system | Astroinertial with GLONASS |
| Accuracy | 250 m |
The R-29RMU2.1 Layner[2] (Russian: Р-29РМУ2.1 "Лайнер" meaning Liner) is a Russian liquid-fuelled submarine-launched ballistic missile (SLBM) and the newest member of the R-29 missile family, developed by the Makeyev Rocket Design Bureau and produced by the Krasnoyarsk Machine-Building Plant. Derived from the R-29RMU2 Sineva SLBM, the Layner can carry twelve nuclear warheads, three times as many as Sineva. It was expected to enter service with the Russian Navy's Delta IV-class submarines after a successful test programme that spanned from May to September 2011. The Russian Navy confirmed in 2014 that the system was now in use.