Kalvari-class submarine (1967)

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

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.

Kalvari-class (Foxtrot-class) submarine of the Indian Navy
Class overview
Name	Kalvari class
Builders	Sudomekh, Admiralty Shipyard
Operators	Indian Navy
Succeeded by	Vela class
In commission	1967–2003
Completed	4
Retired	4
Preserved	1
General characteristics
Type	Submarine
Displacement	1,950 t (1,919 long tons) surfaced 2,475 t (2,436 long tons) submerged
Length	91.3 m (299 ft 6 in)
Beam	7.5 m (24 ft 7 in)
Draught	6 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 depth	250 m (820 ft)
Complement	75 (incl 8 officers)
Sensors and processing systems	Panchendriya sonar
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.

Ships

Name	Pennant	Builder	Commissioned	Decommissioned	Status
INS Kalvari	S23	Sudomekh	8 December 1967	31 May 1996	Sail on display
INS Khanderi	S22	Sudomekh	6 December 1968	18 October 1989	Sail on display
INS Karanj	S21	Sudomekh	4 September 1969	1 August 2003
INS Kursura	S20	Sudomekh	18 December 1969	27 September 2001	As a museum

INS Kursura in dry dock