The Durg-class corvettes of the Indian Navy were customized variants of the Soviet Navy Nanuchka-class corvettes.

[1] Durg-class vessels take their names from famous historical forts in India.

The Durg class was primarily intended for coastal patrol and defence.

They were the first class of vessels in the Indian Navy to primarily rely on surface-to-air missiles and anti-ship missiles for defence.

Some design improvements made for the Durg class were incorporated into the Nanuchka III class, commissioned into the Soviet Navy in the 1980s.