INS Kalvari (S23)

INS Kalvari (S23) was the lead vessel of the Kalvari class of diesel-electric submarines of the Indian Navy.[1] It was the first ever submarine inducted into service by the Indian Navy.[2][3] The submarine was laid down on 27 December 1966 as Foxtrot-class submarine B-51 of the Soviet Navy by Novo-Admiralty at Galerniy Island, Leningrad. The submarine was launched on 15 April 1967 and competed on 26 September 1967.[4][5] The submarine was commissioned by the Indian Navy on 8 December 1967 at Riga, Soviet Union. The Navy celebrates Submarine Day annually on December 8 to commemorate this occasion.[2][3] The submarine was decommissioned in 1992.[4]

INS Kalvari submarine fin at RK Beach
For other ships with the same name, see INS Kalvari.

History
India
Name: INS Kalvari
Namesake: "Kalvari" a deep sea tiger shark.
Launched: 15 April 1967
Commissioned: 8 December 1967
Decommissioned: 31 May 1996
Identification: S23
Fate: Decommissioned
Status: Hull scrapped, fin preserved
General characteristics
Class and type: Kalvari-class 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 kn (15 km/h; 9.2 mph) surfaced
  • 380 mi (610 km) at 10 kn (19 km/h; 12 mph) submerged
Test depth: 250 m (820 ft)
Complement: 75 (incl 8 officers)
Armament:
  • 10 533 mm (21 in) torpedo tubes with 22 SET-65E/SAET-60 torpedoes
  • 44 mines in lieu of torpedoes

Kalvari is the Malayalam word for tiger shark, a deep-sea predator in the Indian Ocean. The name symbolizes agility, strength and predatory power.[6][7] The tiger shark (Galeocerdo Cuvier) is a species of requiem shark which are found in tropical and temperate waters.

References
  1. Kalvari Class (Foxtrot Class) – Bharat Rakshak :: Indian Navy. Bharat Rakshak. Retrieved on 2018-12-25.
  2. "Submarine Day: Its INS Kalvari connection and everything you want to know". The Financial Express. 11 December 2020. Retrieved 27 December 2020.
  3. "Explained: What is Submarine Day that celebrates INS Kalvari?". The Indian Express. 11 December 2020. Retrieved 27 December 2020.
  4. "B-51 (6125986)". Miramar Ship Index. Retrieved 10 September 2009.
  5. Polmar, Norman; Noot, Jurrien (1991). Submarines of the Russian and Soviet Navies, 1718–1990. Annapolis, Maryland: Naval Institute Press. p. 342. ISBN 978-0-87021-570-4. OCLC 21195060.
  6. "What Is INS Kalvari? All You Need To Know". NDTV.com. Retrieved 31 January 2018.
  7. Banerjee, Ajay (6 April 2015). "Parrikar undocks Scorpene sub". The Tribune. Retrieved 8 April 2015.



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