This 18th-century French hydrographic map depicts the southern peninsula of India, Ceylon (Sri Lanka), and the surrounding waters of the Bay of Bengal ('Golfe de Bengale') and the Indian Ocean ('Mer des Indes'). Designed by Rigobert Bonne, Hydrographer to the King of France, the chart delineates the Malabar Coast to the west and the Coromandel Coast to the east, alongside the island groups of the Maldives, Laccadives, and the Andaman and Nicobar Islands. Of distinct navigational significance are the seasonal monsoon sailing tracks plotted with directional arrows labeled by month across the ocean routes, providing critical information for merchant and naval navigation during the Age of Sail. Key historical ports and colonial trading centers such as Goa, Pondicherry, Madras, Cochin, Colombo, and Trincomalee are prominently featured with fine coastal details.