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 Aigrette scrap at Toulon on 14 April 1920. French submarine Aigrette Aigrette was the lead ship of the s built for the French Navy between 1902 and 1905. Laid down in May 1902, she was launched in February 1904 and commissioned in 1908. She was essentially an experimental submarine, and although in service during World War I, saw no action. The class was designed by Maxime Laubeuf and used Drzewiecki drop collar launchers and external cradles to launch torpedoes. "Aigrette" had a surfaced displacement of and a submerged displacement of . Her dimensions were long, with a beam of and a