The Indian Navy welcomed INS Vela, a Scorpene-class submarine built by the government-owned Mazagon Dock Shipbuilders in Mumbai.
Admiral Karambir Singh, Chief of the Naval Staff, marked the formal induction of the submarine in a ceremony on Thursday.
INS Vela is the fourth stealth Scorpene-class submarine built by MDL in collaboration with Naval Group of France.
"The submarine's motto 'Vigilant, Valiant, Victorious' epitomizes the submarine's spirit in achieving the tasks at hand," the Navy said in a statement.
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The association of numerous Indian companies in building the platform makes it a true representation of the 'Make in India' concept, it added.
The submarine's construction began in July 2009 and was designated as 'Yard 11878' during its construction. It was named INS Vela in May 2019 and was handed to the Indian Navy this month after extensive system, machinery and weapon trials.