The Commerce and Navigation of the Erythræan Sea, an anonymous treatise from the Roman imperial era, outlines the hazardous maritime routes and trade networks of the Red Sea and surrounding regions. Concentrating on the difficulties of traversing perilous coasts, gulf currents, and foreign territories, the text recounts the journeys of fleets, the strategic significance of ports such as Burnt Island, and the intricate relationship between commerce and geography.
Drawing on historical records and personal observations, it maps the routes from Arabia to the East Indies, highlighting the risks posed by reefs, fierce tides, and unfriendly inland areas. The work continues to serve as a crucial source for understanding ancient trade patterns, providing precise descriptions of distances, headlands, and the socio-economic environments of the Erythræan Sea. Its worth stems from its thorough, though stylized, documentation of a world where navigation and survival relied on accurate knowledge of the sea’s unpredictable character.