The Arrhenius gas carrier was supposed to to be loaded and then head to the Turkish port of Samsun MOSCOW, May 25. /TASS/. Russian security services have thwarted a terrorist attack aboard an explosives-rigged vessel that arrived at the Russian port of Ust-Luga from Belgium and was supposed to head to Turkey, the Federal Security Service (FSB) said in a statement. "The Federal Security Service, acting together with the Investigative Committee, the Defense Ministry and the National Guard,