The frigate ‘Admiral Grigorovich’ and the guard ship ‘Pytlivy’ have completed their missions as part of Russia’s Mediterranean permanent task force and have set off for Sevastopol, according to Black Sea Fleet spokesman Captain 1st-Class Vyacheslav Trukhachyov. “Currently, the warships are passing though the Straits of the Dardanelles and the Bosporus, heading for the Black Sea,” the spokesman said on Thursday. The warships’ crews earlier held various drills, solely and as part of a naval group, performing artillery fire against practice surface and air targets, and also sharpened the skills of anti-submarine warfare, TASS reports. The Mediterranean task force comprises about 15 warships and support vessels, Trukhachyov said.