01. Sailing Around The Erythraean Sea.

 Of the designated harbours of Erythraean Sea and the ports of trade on it, first comes Egypt's port of Myos Harmos, and beyond it after a sail of 1800 stades to the right, Berenice.  Both the ports are bays of the Red Sea on the edge of Egypt.

Notes:-

1. A stade or stadia was an ancient Greek unit of length consisting of 600 ancient Greek feet (podes). It ranges between 150 and 210 metres

2. Myos Harmos (Greek); meaning Mussl Harbour was a prominent trading point of the ancient world. It was established by Ptolemic dynasty in the third century BCE, and it reached its zenith during 1st century CE. An estimate says 120 cargo ships departed from the Far East for every year. Mediterranean olive oil, fine glass, textiles, Italian wine and gold bullion were exchanged for pepper, silks, pearls and ivory. Cargo was offloaded here to be taken through overland caravan route. Excavations at Quseir al-Qadim by Southampton University had identified the location at Quseir al-Qadim, eight kilometres north of modern E Qoseir, Egypt. Al Wajh on the Arabian sub continent is just opposite. 

Berenice or Berenike was the sister port of Myos Harmos. It was founded by Ptolemic II Philadelphus 275 BCE. It is Berenice Troglodytica on the southern base of Horn of Africa.