Russia is expected to build four vessels to deliver oil and gas under the Sakhalin II energy project being implemented on Russia's Far Eastern island, RIA Novosti reported. The shipyard based in St. Petersburg, Russia's second biggest city, will build two ice-breaking tankers, and a shipbuilding plant in Primorye Territory in the Far East two more vessels under a 15-year contract between Sakhalin Energy and a Russian-operating affiliate of A.P. Moller-Maersk group. Sakhalin Energy, a Dutch-British-Japanese venture that is developing two vast fields with estimated recoverable reserves of 150 million metric tons of oil and 500 billion cubic meters of gas on Sakhalin, is expected to receive six vessels from the group in 2007.