HMS Vanguard and Le Triomphant submarine collision across the seabed". However, a government spokesman said that there "was no compromise to nuclear safety". Hervé Morin, France's Minister of Defence, said that they "face an extremely simple technological problem, which is that these submarines are not detectable". HMS Vanguard and Le Triomphant submarine collision The submarines HMS "Vanguard" and "Triomphant" collided in the Atlantic Ocean in the night between 3–4 February 2009. Both are nuclear-powered ballistic missile submarines. The Royal Navy's and the French Navy's both sustained damage, but no injuries or radioactivity releases were reported. At the time of the collision, both vessels were submerged and, according
French submarine Mariotte French submarine Mariotte The French submarine "Mariotte" (Q74) was a submarine built for the French Navy prior to World War I. Intended to accompany the fleet, she was designed for high speed on the surface. Although the navy was unsatisfied with her performance on the surface, the boat had a higher underwater speed than any French submarine before or during the following 35 years. "Mariotte" was plagued with engine problems during her construction and the navy spent years fixing the various issues before finally commissioning her five years after beginning construction. During the war, she participated in the Dardanelles Campaign,