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Maritime map of the Philippines, with inset maps of bays showing bathymetry (sea depth), shoals, reefs and anchor points. There is also an inset map of Taal Volcano, and elevations (side views of terrestrial landmarks like mountains and islands).

Maritime map of the Philippines, with inset maps of bays showing bathymetry (sea depth), shoals, reefs and anchor points. There is also an inset map of Taal Volcano, and elevations (side views of terrestrial landmarks like mountains and islands).

A hand-drawn map designed to aid navigation around the southern coast of Luzon and the islands of the central Philippines. It features side views of coastal hills and mountains (‘elevations’) to use as landmarks, as well as towns, shoals and reefs.