Kalvari-class submarine (1967)

Kalvari-class submarines were the first submarines inducted into the Indian Navy. They were variants of the early Soviet Foxtrot-class submarines. Four of the class served in the Indian Navy. Four additional variants of the later Foxtrot class were inducted as the Vela class.

For the Scorpène-class submarine, see Kalvari-class submarine (2015).

Kalvari-class (Foxtrot-class) submarine of the Indian Navy
Class overview
NameKalvari class
BuildersSudomekh, Admiralty Shipyard
Operators Indian Navy
Succeeded byVela class
In commission1967–2003
Completed4
Retired4
Preserved1
General characteristics
TypeSubmarine
Displacement
  • 1,950 t (1,919 long tons) surfaced
  • 2,475 t (2,436 long tons) submerged
Length91.3 m (299 ft 6 in)
Beam7.5 m (24 ft 7 in)
Draught6 m (19 ft 8 in)
Speed
  • 16 knots (30 km/h; 18 mph) surfaced
  • 15 knots (28 km/h; 17 mph) submerged
Range
  • 20,000 mi (32,000 km) at 8 knots (15 km/h; 9.2 mph) surfaced
  • 380 mi (610 km) at 10 knots (19 km/h; 12 mph) submerged
Test depth250 m (820 ft)
Complement75 (incl 8 officers)
Armament
  • 10 533mm torpedo tubes with 22 SET-65E/SAET-60 torpedoes
  • 44 mines in lieu of torpedoes

INS Kursura has been preserved as a museum on Ramakrishna Mission Beach in Visakhapatnam. The sail of the lead vessel, INS Kalvari is also on display at the Visakhapatnam city museum.

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