A sea chart of the unknown north east Asia

One of the first sea charts of north-east Asia, illustrating how little was known of the region. It shows from Novaya Zemlya in northern Russia, along the coast of Siberia (with few promontories and one large island) past the mythical 'Land of Ezo' and 'Companies Land' to Japan, Korea and Zhoushan in China. There are no signs of Hokkaido, Sakhalin, Kamchatka or the Bering Strait, as the chart predates the explorations of Vitus Bering by nearly fifty years and James Cook by nearly a century.