The coast of India from Pulo Timon to Pulo Cambir comprehending the Malayan coast, the Gulf of Siam, the coasts of Tsiampa and Cochinchina, with the adjacent islands and part of the isle of Borneo
Thailand, Malaysia, Cambodia, Indonesia, Brunei, Vietnam
Nautical charts like this are detailed around the coasts and on the seas (e.g. river mouths, islands, shoals and reefs) while the interiors are blank. The web of lines is a rhumbline network, while the numbers indicate sea depth (bathymetry).