An oil tanker that was set ablaze by a blast near the Strait of Hormuz in June will be back in service in the fourth quarter after repairs, vessel owner Frontline said on Tuesday. Images of the product tanker Front Altair taken on June 13 showed flames and thick black smoke billowing from a hole in the side of the vessel following the explosion, which the United States has blamed on Iran. Iran has denied any involvement in the blasts on the Front Altair or the Japanese-owned Kokuka Courageous vessel on the same day, or the attacks on four other vessels in the Gulf region in May.