navyreco
Senior Member
According to a French Navy statement, the exit of the missile from the submarine went smoothly and safely for the submarine and its crew.
During the first phase of the flight, an incident occurred and resulted in the destruction of the missile. At this stage the French Navy confirms the debris fell into the expected zone that was closed to sea and air traffic.
The French Navy implements the necessary means to ensure the safety of navigation. The debris will be recovered.
This incident marks the first failure in the six tests of the M51 so far which tests begun in 2006.
[...]
The explosion of the missile startled many people around the area in Britanny. Several witnesses explained they felt the ground vibrate while hearing a "loud noise".
This was the first test launch from Le Vigilant. The two previous submerged launches occured with Le Terrible SSBN in January and July 2010. The three other launches occured in 2006, 2007 and 2008 from a land based test center.
Le Vigilant is the third submarine of the Le Triomphant class SSBN. It was commissioned in November 2004.
Le Terrible is the fourth and last submarine of the Le Triomphant class SSBN. It was commissioned in September 2010.
As someone rightly points out over at mp.net, not a smart idea to declare such a complex missile after just 5 launches...
5 test launches before deployment is kind of low, Trident II had 20 launches with several failures before initial deployment followed by 138 successful tests subsequently. Shorting a test program is a false economy.