Arihant-class submarine

	INS Arihant, lead vessel of the class
Class overview
Name	Arihant
Builders	Navy Shipbuilding Centre, Visakhapatnam
Operators	Indian Navy
Succeeded by	S5-class submarine
Cost	₹40 billion (US$500 million) per submarine
In commission	2016–present
Planned	4
Building	2
Completed	2
Active	2
General characteristics
Type	Nuclear powered ballistic missile submarine
Displacement	Arihant & Arighat: 6,000 t (5,900 long tons; 6,600 short tons) surfaced; S4 & S4*: 7,000 t (6,900 long tons; 7,700 short tons);
Length	Arihant & Arighat: 111 m (364 ft); S-4: 130 m (430 ft)
Beam	11 m (36 ft)
Draft	15 m (49 ft)
Propulsion	1 x CLWR-B1 pressurized water reactor (83 MW); 1 × shaft;
Speed	Surfaced: 12–15 kn (22–28 km/h); Submerged: 24 kn (44 km/h);
Range	Unlimited except by food supplies
Test depth	300 m (980 ft)
Complement	95
Sensors and ; processing systems	USHUS sonar
Armament	Arihant & Arighat: 12 × K15 SLBM (1,500 km or 930 mi range) or 4 × K-4 SLBM (3,500 km or 2,200 mi range); S4 & S4*: 24 × K15 SLBM (750 km or 470 mi range) or 8 × K-4 SLBM (3,500 km or 2,200 mi range) or 8 × K-5 SLBM (5,000–6,000 km or 3,100–3,700 mi range); 6 × 21" (533 mm) torpedo tubes – est 30 charges (torpedoes, cruise missiles or mines);

The Arihant-class (transl. 'Slayer of Enemies' in Sanskrit) is a class of Indian nuclear-powered ballistic missile submarines being built for the Indian Navy. They were developed under the ₹900 billion (US$11 billion) Advanced Technology Vessel (ATV) project to design and build nuclear-powered submarines. These vessels are classified as 'strategic strike nuclear submarines' by India.

The lead vessel of the class, INS Arihant was laid down in 2004, launched in 2009 and after extensive sea trials was confirmed to be commissioned in August 2016. Arihant holds the distinction of being the first ballistic missile submarine to have been built by a country other than one of the five permanent members of the United Nations Security Council.

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