INS Kalvari (S21)

INS Kalvari (S21) at sea
History
India
NameKalvari
NamesakeKalvari (S23)
Ordered2005
BuilderMazagon Dock Limited, Mumbai
Launched27 October 2015
Acquired2 December 2017
Commissioned14 December 2017
IdentificationS21
MottoEver Onward
Statusin active service
Badge
General characteristics
Class & typeKalvari-class submarine
Displacement
  • Surfaced: 1,615 tonnes (1,780 short tons)
  • Submerged: 1,775 tonnes (1,957 short tons)
Length67.5 m (221 ft)
Beam6.2 m (20 ft)
Height12.3 m (40 ft)
Draught5.8 m (19 ft)
Propulsion
  • 4 x MTU 12V 396 SE84 diesel engines
  • 360 x battery cells
  • DRDO PAFC Fuel Cell AIP (To be added in mid-life refit)
Speed
  • Surfaced: 11 kn (20 km/h)
  • Submerged: 20 kn (37 km/h)
Range
  • 6,500 nmi (12,000 km) at 8 kn (15 km/h) (surfaced)
  • 550 nmi (1,020 km) at 4 kn (7.4 km/h) (submerged)
Endurance50 days
Test depth350 metres (1,150 ft)
Complement
  • 8 officers
  • 35 sailors
Electronic warfare
& decoys		C303/S anti-torpedo countermeasure system
Armament

INS Kalvari (S21) (lit. 'Tiger shark') is the first of the six indigenous Kalvari-class submarines currently in service with the Indian Navy. It is a diesel-electric attack submarine which is designed by DCNS (French naval defence and energy company) and was manufactured at Mazagon Dock Limited in Mumbai.

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