The first of the Scorpene class submarines, Kalvari, was delivered to the Indian Navy by Mazagon Dock Shipbuilders Limited (MDL) in September 2017. It is a class of dieselelectric attack submarines, designed by French naval defence and energy company DCN S (Direction des Constructions Navales) and manufactured by Mazagon Dock Ltd in Mumbai, Maharashtra, to be commissioned in December 2017. Named after the Tiger Shark, it is equipped with superior stealth features such as advanced acoustic silencing techniques and low radiated noise as well as precision guided weapons.