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
Triomphant-class submarine Royal Navy's s), of which two are expected to be on patrol at any given time. On 3 February or 4 February 2009, "Le Triomphant" collided with the Royal Navy submarine ; the Royal Navy boat suffered minor scrapes and scratches. "Le Triomphant" was reported to have proceeded to Brest under her own power, submerged, but with extensive damage to her sonar dome. Triomphant-class submarine The "Triomphant" class of ballistic missile submarines of the French Navy is the active lead boat class of four boats that entered service in 1997, 1999, 2004, and 2010. These four superseded the older ,