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 Fresnel French submarine Fresnel French submarine "Fresnel" (Q65) was a Laubeuf type submarine of the , built for the French Navy prior to World War I. "Fresnel" was ordered by the French Navy as part of its 1905 programme and was laid down at the Rochefort Naval Yard in October of that year. She was launched on 16 June 1908 and commissioned 22 February 1911. "Fresnel" was equipped with Du Temple boilers and reciprocating steam engines for surface propulsion, and CGE Nancy electric motors for power while submerged. She carried eight torpedoes, two internally and six externally. "Fresnel" was named for