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Hand-drawn map of islands in the Riau Archipelago, with bathymetry (sea depth) marked. It features side views of hills (‘elevations’) to use as landmarks, including ‘Jehore hill’, probably in Johor at the southern tip of the Malay Peninsula.

There is a port at the south of this map of the Côn Đảo archipelago (Vietnam), and notes giving details such as a suitable location to careen ships (turning a ship on its side for cleaning or repair). A ruined English fort is also marked.

Two coastal navigation maps: one of the Mergui Archipelago off the west coast of Myanmar; and one of Phuket (‘Isle Junkseilon’) and the surrounding islands off the west coast of Thailand. Both feature bathymetry (sea depth), shoals and reefs.

Navigation map of the coast of the ancient kingdom of Pégou and near the town of Martaban (Mottama), Myanmar. Bathymetry (sea depth), anchor points, notes on currents and obstructions are marked, and there are drawings of side views of coastal hills.

Two coastal navigation maps: one of the Mergui Archipelago off the west coast of Myanmar; and one of Phuket (‘Isle Junkseilon’) and the surrounding islands off the west coast of Thailand. Both feature bathymetry (sea depth), shoals and reefs.

Navigation map of the coast of the ancient kingdom of Pégou and near the town of Martaban (Mottama), Myanmar. Bathymetry (sea depth), anchor points, notes on currents and obstructions are marked, and there are drawings of side views of coastal hills.