France recently tested the M51. Le Triomphant class submarines are armed with the M45 or, starting from 2010, with the new M51.
But that's a coincidence ofcourse...The missile was followed throughout its flight phase by DGA Essais de Missiles. The fallout zone was located in the North Atlantic. This test was carried out without a military nuclear warhead and in strict compliance with France’s international commitments.
Also noteworthy, a United States Air Force RC-135S Cobra Ball was in the air during the missile test. The aircraft is a measurement and signature intelligence (MASINT) collector equipped with special electro-optical instruments designed to observe ballistic missile flights at long range
The French ministry of armed forces announced that the procurement agency DGA this morning successfully tested an M51 submarine launched ballistic missile (SLBM).