Mamiya Rinzo

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Mamiya Rinzō ( Japanese 間 宮 林 蔵 ; * around 1775 in Kamihirayanagi, Tsukuba-gun , Hitachi Province (today: Kamihirayanagi, Tsukubamirai , Ibaraki Prefecture ); †  April 13, 1844 ) was a Japanese navigator and cartographer of the Edo period .

Mamiya is known for researching and mapping Sakhalin . He recognized the island character and was able to prove that Sakhalin has no connection to the Asian mainland due to the Tatar Sound .

In his later life, Mamiya lived underground as an agent of the Tokugawa shogunate .

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