LONDON, Sept 30 (Reuters) - Two more Arc7-classed liquefied natural gas (LNG) tankers are heading to Yamal LNG in the Russian Arctic having completed their sea trials around the South Korean shipyard that built them, Refinitiv Eikon shipping data showed on Monday.
   The Nikolay Urvantsev and Georgiy Ushakov have left the Daewoo Shipbuilding and Marine Engineering (DSME)  Okpo shipyard in South Korea and are indicating Sabetta Seaport (Yamal LNG) as their destination, the data showed.
   They are approaching the Bering Strait and will reach Yamal LNG via the Northern Sea Route, which is sufficiently cleared of heavy ice during the summer to allow the tankers through.
   One more tanker, the Yakov Gakkel, is undergoing sea trials around Okpo. Yakov Gakkel is the final Arc7 tanker from a 15-strong order by LNG shipping companies for Yamal, which operated by independent Russian gas producer Novatek .
   Yamal began operations in December 2017 and has contributed to a boom in LNG supplies in the past 18 months.
     Vessel Status Operator  Chris. de Margerie In operation Sovcomflot  Boris Vilkitsky In operation Dynagas  Vladimir Rusanov In operation MOL  Fedor Litke In operation Dynagas  Eduard Toll In operation Teekay  Rudolf Samoylovich In operation Teekay  Vladimir Vize In operation MOL  Georgiy Brusilov In operation Dynagas  Boris Davydov In operation Dynagas  Nikolay Zubkov In operation Dynagas  Nikolay Yevgenov In operation Teekay  Vladimir Voronin in operation Teekay  Nikolay Urvantsev(DSME 2432) En route to Sabetta MOL  Georgiy Ushakov (DSME 2433) En route to Sabetta Teekay  Yakov Gakkel (DSME 2434) Sea trials Teekay    (Reporting by Sabina Zawadzki, editing by Louise Heavens)  ((sabina.zawadzki@thomsonreuters.com; +44 207 542 4051;)