New Delhi, Jan. 5 -- The fourth and last of the Arihant class nuclear powered and long range ballistic missile equipped submarine S4*, launched by Defence Minister Rajnath Singh on October 16 last year, is likely to be named INS Arisudan with Arihant (destroyer of enemies) being the common name for all the nuclear submarines of India.

HT learns that the formal name of S4* will be proposed by the ship-naming committee of the Indian Navy, then cleared by the Defence Ministry and finally the President of India will give the approval with Arisudan expected to be commissioned in 2027.

While INS Arisudan's predecessor INS Aridhaman is expected to be commissioned in the first half of 2026, work has also gained momentum for design and construct...