- Family: Diamant
- Length: 21.6 m
- Diameter: 1.34 m
- Launch Mass: 18 T
- Low Earth Orbit Capacity: 160 kg
The Diamant BP4 was manufactured by Société d’étude et de réalisation d’engins balistiques with the first launch on 1975-02-06. Diamant BP4 has 3 successful launches and 0 failed launches with a total of 3 launches. The Diamant rocket (Diamant is French for “diamond”) was the first exclusively French expendable launch system and at the same time the first satellite launcher not built by either the United States or USSR. As such, it has been referred to as being a key predecessor for all subsequent European launcher projects.