Aerospace & Defense Russia’s ‘Black Hole’ Kilo-Class Submarine Is Now Being Replaced: New Lada-Class Submarine Is Being Built The first submarine of this class, the Sankt-Peterburg, was laid down in December 1997 and launched in 2004. Complications from its propulsion system arose during testing, forcing the Russian Navy to delay that first submarine’s entrance into service until 2010. BrahMos missiles ...