Portuguese, Dutch, and English Possessions in the East, 1650
A map of eastern Africa, southern Asia, and Indonesia showing the possessions of the Portuguese, Dutch, and English in the region around 1650. The map is color–coded to show territorial possessions at the time of the Portuguese in green, Dutch ...

Winter Indian Ocean Winds, 1896
Winds of the Indian Ocean in January and February....

Summer Indian Ocean Winds, 1896
Winds of the Indian Ocean in July and August....

Indian Ocean Seasonal Currents, 1915
A map of the Indian Ocean from 1915 showing the seasonal direction of currents of the Indian Ocean in January and July. "In the Indian Ocean, the circulation is complete only in the southern half. As before, there is a South Equatorial current w...

Winds and Rainfall of Southern Asia in July, 1916
A map of Southern Asia from 1916 showing the prevailing wind directions and currents in the region in July. This map illustrates the summer monsoon conditions, when moist winds blow from the Indian Ocean northward over the land, giving the region its...

Winds and Rainfall of Southern Asia in January, 1916
A map of Southern Asia from 1916 showing the prevailing wind directions and currents in the region in January. This map illustrates the winter monsoon conditions, when the winds blow from the dry interior of the Asian continent southward, giving the ...

Indian Ocean, 1920
The Indian Ocean, Africa, Asia, and Australia....