The third state-of-art scorpene class submarines INS Karanj was launched by the Indian Navy in Mumbai. INS Karanj the third state-of-art scorpene class submarine was launched by Mrs Reena Lamba, President Navy Wives Welfare Association on 31st January 2018. The submarine was launched amongst the recitation of Sanskrit shlokas from the Atharva Veda. Mrs Lamba named the submarine as ‘Karanj’ after the earlier Kalvari class INS Karanj (S21) which was decommissioned in 2003 after serving the nation for 34 years from 1969 to 2003. Old INS Karanj (S21) served in the 1971 war.

The third state-of-art scorpene class submarine is built by the Mazagon Dock Shipbuilders Limited (MDSL). The third submarine of the first batch of six Kalvari class submarines is designed by French naval defence and energy group DCNS in collaboration with Mazagon Dock Shipbuilders Limited (MDSL). A total of six submarines are to be built in collaboration with the two groups under the Project 75. The Scorpene class submarines are built at an estimated cost of $ 3.75 billion. Before being commissioned into the Indian Navy, INS Karanj will undergo rigorous tests both in the harbour and the sea. 

INS Kalvari the first Scorpene class submarine was commissioned into the Indian Navy on 14th December 2017. The submarine was commissioned into the Indian Navy by Prime Minister Narendra Modi. The second state-of-art scorpene class submarine INS Khanderi was launched on 12th January 2017. INS Khanderi weighing 1870 tonnes is undergoing sea trials since June 2017. The length of INS Khanderi is 68 meters with a test depth of 350 meters. The second state-of-art scorpene class submarine INS Khanderi is expected to be commissioned soon. The third state-of-art scorpene class submarine INS Karanj also weighs 1870 tonnes and the length of this submarine is 68 meters with a test depth of 350 meters. The submarine is undergoing sea trials.