Submarine Day

Submarine Day is celebrated by the Indian Navy on the 8^th of December. It marks the day on which the Indian Naval Ensign was unfurled on India’s first submarine, INS Kalvari at Riga, Latvia in 1967. The name ‘Kalvari’ is a Malayalam term for ‘Tiger Shark’- a predatory species occurring in the Indian Ocean. It is a diesel-electric submarine from the Foxtrot Class, from the erstwhile USSR. The submarine was decommissioned in 1996.