Nistar-class diving support vessel

Nistar personnel performing Yoga
Class overview
BuildersHindustan Shipyard (HSL)
Operators Indian Navy
Cost
  • 2,392.94 crore (equivalent to 32 billion or US$380 million in 2023)
  • 1,196.47 crore (equivalent to 16 billion or US$190 million in 2023) per unit (FY 2018)
Planned2
Completed2
Active1
General characteristics
TypeDiving support vessel
Displacement9,350 t (9,202 long tons)
Length118.4 m (388 ft 5 in)
Beam22.8 m (74 ft 10 in)
Propulsion2 × diesel engine
Complement1 × Deep-submergence rescue vehicle
Sensors &
processing systems
Electronic warfare
& decoys
1 × EW Suite
Armament2 × 30 mm/65 AK-630 CIWS
Aircraft carried1 × 15 t (15 long tons) helicopter.

The Nistar class is a series of two diving support vessels being built by Hindustan Shipyard (HSL) for the Indian Navy. The deal was signed on 20 September 2018 with the delivery of the ships is scheduled to commence from July 2023. The primary role of the vessels to support the Indian Navy's submarine fleet and meet various operational requirements such as submarine rescue, deep sea diving operations, sustained patrolling, non combatant evacuation operations and search and rescue (SAR). The induction of the vessels helps the Indian Navy to prioritize submarine operations in the Indo-Pacific.