Complex sentence: The Port established in September 1976, whereupon it started developing Jeddah Port and its facilities were expanded from modest 10 operational berths in 1976 to the 58 berths of international status in service today.
Split into simpler sentences: The Port established in September 1976, whereupon it started developing its facilities. The port has expanded from a modest 10 operational berths in 1976 to the 58 berths of international standard in service today.