INS Kalvari (S23)
|Namesake||"Kalvari" a deep sea tiger shark.|
|Launched||15 April 1967|
|Commissioned||8 December 1967|
|Decommissioned||31 May 1996|
|Status||Hull scrapped, fin preserved|
|Class and type||Kalvari-class submarine|
|Length||91.3 m (299 ft 6 in)|
|Beam||7.5 m (24 ft 7 in)|
|Draught||6 m (19 ft 8 in)|
|Test depth||250 m (820 ft)|
|Complement||75 (incl 8 officers)|
INS Kalvari (S23) was the lead vessel of the Kalvari class of diesel-electric submarines of the Indian Navy. It was the first ever submarine inducted into service by the Indian Navy. 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. The submarine was commissioned by the Indian Navy on 8 December 1967 at Riga, Soviet Union. The Navy celebrates Submarine Day annually on 8 December to commemorate this occasion. The submarine was decommissioned in 1992.
Kalvari is the Malayalam word for tiger shark, a deep-sea predator in the Indian Ocean. The name symbolizes agility, strength and predatory power. The tiger shark (Galeocerdo Cuvier) is a species of requiem shark which are found in tropical and temperate waters.
- Kalvari Class (Foxtrot Class) – Bharat Rakshak :: Indian Navy. Bharat Rakshak. Retrieved on 2018-12-25.
- "Submarine Day: Its INS Kalvari connection and everything you want to know". The Financial Express. 11 December 2020. Retrieved 27 December 2020.
- "Explained: What is Submarine Day that celebrates INS Kalvari?". The Indian Express. 11 December 2020. Retrieved 27 December 2020.
- "B-51 (6125986)". Miramar Ship Index. Retrieved 10 September 2009.
- 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.
- "What Is INS Kalvari? All You Need To Know". NDTV.com. Retrieved 31 January 2018.
- Banerjee, Ajay (6 April 2015). "Parrikar undocks Scorpene sub". The Tribune. Retrieved 8 April 2015.