exported variant with Vietnam being its first and only operator. Gepard 5.1: configured as a ocean-going patrol ship. Intended for patrolling territorial waters, helping in distress on the sea, environment protection, support to marine missions and flag demonstration in areas being of state interest. Can be featured with "heavier" weapons if necessary. Powered entirely by diesel engines with a two-shaft CODAD propulsion plant. Gepard 5.3: designed to search, track and fight against surface, underwater and air enemy independently and within task force, carry out convoy missions and patrol duty, guard maritime state border and economic zone. Featured with four quadruple launchers for sixteen Kh-35 anti-ship missiles. Powered by a two-shaft CODAD propulsion plant. Vietnam In March and August of 2011, the Vietnam People's Navy received two Gepard 3.9-class frigates ordered in 2006, built in Russia at Tatarstan's Gorky Shipbuilding Plant. In late 2011, Vietnam signed a contract for an additional batch of two ships in an anti-submarine configuration. A further two ships are being considered to bring the total order up to six vessels, and that potential acquisition is likely being stalled due to sanctions towards Russia as a result of the Ukrainian conflicts. Sri Lanka Sri Lanka began talks for the credit purchase of a Gepard 5.1 frigate in 2017 and the Sri Lankan cabinet approved the proposal by President Maithripala Sirisena for the purchase of the ship in September 2017. Ships See also List of ships of the Soviet Navy List of ships of Russia by project number List of naval ship classes in service References External links Project 11661 Gepard Class Frigates @ Zelenodolsk Plant named after A.M. Gorky Project 11661 Gepard-3.9 Class Frigates @ Zelenodolsk Plant named after A.M. Gorky Project 11661 Gepard Class Frigates @ Naval Technology Project 1166.1 Gepard class @ FAS 1166.1 Gepard @ Encyclopedia of Ships All Gepard Class Frigates - Complete Ship List @ RussianShips Frigate classes