Kalvari class Submarines

In News: Indian Navy’s fifth Kalvari-class Diesel Electric attack submarine INS Vagir was launched at Mazgaon Dock in Mumbai

Kalvari-class background

The other vessels of the Kalvari class are INS Kalvari, INS Khanderi, INS Karanj, INS Vela and INS Vagsheer.
Kalvari and Khanderi have been commissioned in 2017 and 2019, Vela and Karanj and undergoing sea trials, Vagir has now been launched and Vagsheer is under construction.
The submarines in the current Kalvari-class take their names from erstwhile decommissioned classes of submarines named Kalvari which included Kalvari, Khanderi, Karanj and Vela class — which included Vela, Vagir, Vagshir.
The now-decommissioned Kalvari and Vela classes were one of the earliest of the submarines in the post-independence Indian Navy, which belonged to Soviet origin Foxtrot class of vessels.

Important Facts About Kalvari Class Submarines

These submarines are built under Project 75 and their design is based on the Scorpene class of the submarines.
Constructed by the public sector shipbuilder Mazagon Dock Ltd (MDL) in Mumbai.
Used in anti-warship and anti-submarine operations, intelligence gathering and surveillance and naval mine laying.
Design is based on Scorpene class of submarines designed and developed by French defence major Naval Group formerly DCNS and Spanish state owned entity Navantia.

India’s Current submarine fleet

India operates one submarine each in nuclear powered Classes of Chakra and Arihant
In addition to 14 submarines belonging to three classes of Diesel Electric category — Kalvari, Shishumar and Sindhughosh.