The Indian Navy (IN) is undertaking a Passage Exercise (PASSEX) with Russian Federation Navy (RuFN) in the Eastern Indian Ocean Region (IOR) from 4 to 5 December 2020. The exercise involves participation of RuFN guided missile cruiser Varyag, large anti-submarine ship Admiral Panteleyev and medium ocean tanker Pechenga. Indian Navy is being represented by indigenously constructed guided missile frigate Shivalik and anti-submarine corvetteKadmatt along with integral helicopters. The exercise is aimed at enhancing interoperability, improving understanding and imbibing best practices between both the friendly navies, and would involve advanced surface and anti-submarine warfare exercises, weapon firings, seamanship exercises and helicopter operations.