HMS Vanguard and Le Triomphant submarine collision 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 to the UK Ministry of Defence, moving "at very low speed"; both are equipped with active and passive sonar, although only the latter is used on an operational patrol. HMS "Vanguard" was on a routine patrol in the Eastern
French submarine Naïade (1904) She was single-hulled, with dual propulsion, and constructed of Roma-bronze, a copper alloy of Romazotti's devising. "Naïade" was named for the Naiads, the water spirits of Greek mythology, and was the latest of a line of French warships of that name. "Naïade" entered service in early 1907, and was employed on coastal duties, guarding ports and harbours. She and her sisters were outdated by the next decade and she was stricken in May 1914. French submarine Naïade (1904) French submarine "Naïade" (Q15) was an early submarine built for the French Navy at the beginning of the 20th century. She was