Class overview
Name:	Arihant
Builders:	Navy Shipbuilding Centre, Visakhapatnam[1]
Operators:	Indian Navy
Cost:	₹4,000 crore (US$580 million) per submarine[2]
In commission:	2016
Planned:	4
Building:	3[3]
Active:	1[4]
General characteristics
Type:	Nuclear powered ballistic missile submarine
Displacement:	6,000 tonnes (5,900 long tons; 6,600 short tons) surfaced[5]
Length:	112 m (367 ft)[5]
Beam:	11 m (36 ft)
Draft:	10 m (33 ft)
Installed power:	1 × pressurised water reactor[6] 83 MW (111,000 hp)
Propulsion:	1 × propeller shaft Nuclear
Speed:	Surfaced: 12–15 knots (22–28 km/h) Submerged: 24 knots (44 km/h)
Range:	unlimited except by food supplies
Test depth:	300 m (980 ft)
Complement:	95
Sensors and processing systems:	USHUS sonar
Armament:	12 × K15 SLBM (750 km or 470 mi range) or 4 × K-4 SLBM (3,500 km or 2,200 mi range)[6] 6 × 21" (533 mm) torpedo tubes – est 30 charges (torpedoes, cruise missiles or mines)[7]

The Arihant class (Sanskrit, for Slayer of Enemies) is a class of nuclear-powered ballistic missile submarines being built for the Indian Navy. They were developed under the ₹90,000 crore (US$13 billion) Advanced Technology Vessel (ATV) project to design and build nuclear-powered submarines.^[2]

The lead vessel of the class, INS Arihant was launched in 2009 and after extensive sea trials, was confirmed to be commissioned in August 2016.^[8][9][10] Arihant is 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.^[11]