The submarine was launched on 15 April 1967 and competed on 26 September 1967.[4][5] 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.[2][3] The submarine was decommissioned in 1992.[4]
Kalvari is the Malayalam word for tiger shark, a deep-sea predator in the Indian Ocean. The name symbolizes agility, strength and predatory power.[6][7] The tiger shark (Galeocerdo Cuvier) is a species of requiem shark which are found in tropical and temperate waters.[citation needed]