INS ''Arighaat'' (SSBN 81) () is the second of the

Indian Navy The Indian Navy (IN) (ISO 15919, ISO: ) is the Navy, maritime and Amphibious warfare, amphibious branch of the Indian Armed Forces. The President of India is the Supreme Commander of the Indian Navy. The Chief of the Naval Staff (India), Chief ...

's . It is designated S3 Strategic Strike Nuclear Submarine. The 6,000 tonne vessel was built under the Advanced Technology Vessel (ATV) project at the Ship Building Centre in the port city of

Visakhapatnam Visakhapatnam (; List of renamed places in India, formerly known as Vizagapatam, and also referred to as Vizag, Visakha, and Waltair) is the largest and most populous metropolitan city in the States and union territories of India, Indian stat ...

. The submarine was quietly launched in 2017 and little has been publicly announced about its capabilities and current status. The submarine was originally known as INS ''Aridhaman'' but was renamed INS ''Arighaat'' upon its launch. ''Arighaat'' was commissioned on 29 August 2024.

Description

The boat will have one seven-blade propeller powered by a Compact Light water reactor (CLWR). 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 INS ''Arihant'' (SSBN 80) (), is the lead ship of India's of nuclear-powered ballistic missile submarines. It is designated S2 Strategic Strike Nuclear Submarine. The 6,000 tonne vessel was built under the Advanced Technology Vessel (ATV) ...

. The CLWR has exceptionally lower

acoustic signature The term acoustic signature is used to describe a combination of acoustic emissions of sound emitters, such as those of ships and submarines. In addition, aircraft, machinery, and living animals can be described as having their own characteristic ...

than the previous generation making it harder to detect by enemy vessels along with longer endurance. The submarine has four launch tubes in its hump, just like her predecessor. She can carry up to 12

K-15 Sagarika Sagarika (pronounced: sɑːgərikɑː) (), also known by the code names K-15 or B-05 or PJ-08, is an Indian submarine-launched ballistic missile (SLBM) with a range of that was designed for retaliatory nuclear strikes. It belongs to the K Mis ...

missiles (each with a range of ), or four K-4 missiles (with a range of ).

Status

INS Arighaat was launched in November 2017. ''INS Arighaat'' was expected to be commissioned in 2021. However the commissioning was pushed to 2024 as per a report in the

Hindustan Times ''Hindustan Times'' is an Indian English language, English-language daily newspaper based in Delhi. It is the flagship publication of HT Media Limited, an entity controlled by the Birla family, and is owned by Shobhana Bhartia, the daughter o ...

. INS Arighaat has been commissioned on 29 August 2024 after extensive trials and upgrades. The commissioning ceremony was held in the presence of

Defence Minister A ministry of defence or defense (see spelling differences), also known as a department of defence or defense, is the part of a government responsible for matters of defence and military forces, found in states where the government is divid ...

Rajnath Singh Rajnath Singh (; born 10 July 1951) is an Indian politician and lecturer who is serving the Defence Minister of India since 20 May 2019. He was also the Deputy Leader of the House, Lok Sabha since 2014. He also served the Home Minister in th ...

in Naval Dockyard at

. INS Arighaat is significantly more advanced than the INS Arihant with an increased indigenous content of 70%. In contrast to its predecessor which is equipped with only 750-km range missiles, Arighaat is equipped with both K-15 ''Sagarika'' and K-4 missiles.

Service history

On 27 November 2024, a nuclear-capable K-4

SLBM A submarine-launched ballistic missile (SLBM) is a ballistic missile capable of being launched from submarines. Modern variants usually deliver multiple independently targetable reentry vehicles (MIRVs), each of which carries a nuclear warhead ...

with a range of was tested from INS Arighaat in

Bay of Bengal The Bay of Bengal is the northeastern part of the Indian Ocean. Geographically it is positioned between the Indian subcontinent and the Mainland Southeast Asia, Indochinese peninsula, located below the Bengal region. Many South Asian and Southe ...

. The missile was tested without a warhead and this was the first submarine launch of the long range missile system. While the missile launch was a success, the other parameters for the missile test is being examined as of 2 December.

Description

Status

Service history

References

See also