| Is Missile: | yes |
| M1 MSBS | |
| Origin: | France |
| Type: | SLBM |
| Manufacturer: | Aérospatiale |
| Service: | 1971-75 |
| Engine: | Two-stage solid-fuel rocket |
| Engine Power: | 440kN |
| Weight: | 20005kg (44,103lb) |
| Length: | 10.67m (35.01feet) |
| Diameter: | 1.49m (04.89feet) |
| Vehicle Range: | 3000km (2,000miles) |
| Guidance: | Inertial |
| Yield: | 1 × 1000kt(TNT) |
| Launch Platform: | Redoutable-class SNLEs (SSBNs) |
The M1 MSBS was the first French submarine-launched ballistic missile.
In French, MSBS is the abbreviation for Mer-Sol Balistique Stratégique, or Sea-Ground Strategic Ballistic Missile. It has two stages. It was deployed on the Redoutable-class SNLEs (Sous-marin Nucléaire Lanceur d'Engins) (Device-launching Nuclear Submarine) or SSBNs from 1971 to 1975. It was replaced by the M2 MSBS in 1974–75.[1]