Tasnim |Hossein Zohrvand: Iranian naval forces on Fri. started massive three-day naval drills, codenamed ‘Velayat 97’, in the Sea of Oman and the Indian Ocean with the participation of home-grown, recently unveiled ‘Fateh’ submarine and ‘Sahand’ destroyer. The following photos show part of the large-scale exercises in Makran coastal areas on the Persian Gulf and Sea of Oman.