Kalvari class submarine

Submarine

A submarine is a watercraft capable of independent operation below the surface of the water. It differs from a submersible, which has more limited underwater capability...

s were the first submarines inducted into the Indian Navy

Indian Navy

The Indian Navy is the naval branch of the armed forces of India. The President of India serves as the Commander-in-Chief of the Navy. The Chief of Naval Staff , usually a four-star officer in the rank of Admiral, commands the Navy...

. They were variants of the early Soviet Foxtrot class submarine

Foxtrot class submarine

The Foxtrot class was the NATO reporting name of a class of diesel-electric patrol submarines that were built in the Soviet Union. The Soviet designation of this class was Project 641....

s. Four of the class served in the Indian Navy. Four additional variants of the later Foxtrot class were inducted as the Vela class

Vela class submarine

Vela class submarines of the Indian Navy were variants of the later Soviet Foxtrot class submarines. The last of her class was decommissioned from the Indian Navy in December 2010.The lead vessel, INS Vela, will be preserved as a museum in Tamil Nadu....

.

INS Kursura (S20)

INS Kursura (S20)

INS Kursura was a diesel-electric submarine of the Indian Navy.After decommissioning in 2001, it has been preserved as a museum for public access on Ramakrishna Mission Beach in Visakhapatnam....

 has been preserved as a museum on Ramakrishna Mission Beach

Ramakrishna Mission beach

The Ramakrishna Mission Beach is one of the most popular beach parks in Visakhapatnam , Andhra Pradesh. It gets its name from the Ramakrishna Mission ashrama across the Beach Road from the park...

 in Vishakhapatnam. The sail

Sail (submarine)

In naval parlance, the sail or fin of a submarine is the tower-like structure found on the dorsal surface of submarines...

 of the lead vessel, INS Kalvari

INS Kalvari (S23)

INS Kalvari was the lead vessel of the of diesel-electric submarines of the Indian Navy. The submarine was laid down on 27 December 1966 as 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. B-51...

 is also on display at the Vishakhapatnam city museum.

Ships of the class

Name	Pennant	Builder	Commissioned	Decommissioned	Status
INS Kalvari INS Kalvari (S23) INS Kalvari was the lead vessel of the of diesel-electric submarines of the Indian Navy. The submarine was laid down on 27 December 1966 as 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. B-51...	S23	Sudomekh	08 December 1967	31 May 1996	Sail on display
INS Khanderi INS Khanderi (S22) INS Khanderi was a Kalvari class diesel-electric submarine of the Indian Navy.-References:...	S22	Sudomekh	06 December 1968	18 October 1989
INS Karanj INS Karanj (S21) INS Karanj was a Kalvari class diesel-electric submarine of the Indian Navy.-References:...	S21	Sudomekh	04 September 1969	01 August 2003
INS Kursura INS Kursura (S20) INS Kursura was a diesel-electric submarine of the Indian Navy.After decommissioning in 2001, it has been preserved as a museum for public access on Ramakrishna Mission Beach in Visakhapatnam....	S20	Sudomekh	18 December 1969	27 September 2001	As a museum