Engineering:Kalvari-class submarine (1967)

Kalvari-class (Foxtrot-class) submarine of the Indian Navy
Class overview
Name:	Kalvari class
Builders:	Sudomekh, Admiralty Shipyard
Operators:	Indian Navy
Succeeded by:
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)
Armament:	10 533mm torpedo tubes with 22 SET-65E/SAET-60 torpedoes 44 mines in lieu of torpedoes

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

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

Ships

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

INS Kursura in dry dock