INS Karanj (S21)

INS Karanj was a diesel-electric submarine of the Indian Navy.
The ship was named after the Karanja island, also known as Uran island, located in the Raigad district of Maharashtra.

1970 Accident

In 1970, Karanj was badly damaged after a collision with the destroyer Ranjit when she surfaced directly below the ship. As no drawings of the damaged portions of the boat were available with the Bombay Dockyard or the Indian Navy, it was decided to use Karanj's sister ship INS Kursura, which was already docked at Bombay, as the design template for the metal work, and Karanj was repaired within months, in time to join the Indo-Pakistani War of 1971.

Popular culture

The 2017 film Ghazi, features the story of men aboard S21 who managed to survive underwater for 18 days.