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A series of four maps of the Indian Ocean—one for each quarter of the calendar year—showing the direction and intensity of the winds, including around the seas of Southeast Asia. There are extensive explanatory notes.

Colonial possessions of the Dutch, Spanish and Portuguese, as well as lands of ‘indigenous princes’ are marked with coloured borders on this map of maritime Southeast Asia. Hot springs and mineral water springs in Java are also listed.

The arrows on this map show the direction of the seasonal monsoons of Southeast Asia during the late 18th century. Each arrow has a label in French, indicating the month. The hatched sea areas are where the winds always blow in the same direction.

Map marking the routes through maritime Southeast Asia of two delegations: a French delegation from Brest, France to Siam in 1685; and a Siamese delegation from Siam to Brest in 1686. A note next to Aceh records a sea battle against Portugal in 1616.