INS Aridhaman
INS Aridhaman is a nuclear-powered ballistic missile submarine, and the third of the Indian Navy's. It is designated S4 Strategic Strike Nuclear Submarine. The 7,000-tonne vessel was built under the Advanced Technology Vessel project at the Ship Building Centre in the port city of Visakhapatnam. It is an upgraded variant of the.
The submarine was quietly launched in 2021 and little has been publicly announced about its capabilities and current status.
Description
The boat will have one seven-blade propeller powered by a Compact Light Water Reactor. It can achieve a maximum speed of when on surface and when submerged. The CLWR is an upgraded form of the one that powers INS Arihant. The CLWR has exceptionally lower acoustic signature than the previous generation making it harder to detect by enemy vessels along with longer endurance.The submarine has eight VLS tubes in its hump, as compared to four on her predecessors—, the lead ship of the class, and. She can carry up to 24 K-15 Sagarika missiles, eight K-4 missiles or K-5 missiles.
INS Aridhaman was launched in November 2021 and is currently undergoing sea trials
As of 2 December 2025, the submarine has entered the final stages of trials and is expected to be commissioned soon, as announced by Navy chief, Admiral Dinesh K Tripathi.