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What were the contributions of Fedor I. Soimonov to Caspian Sea exploration?

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Fedor I. Soimonov made significant contributions to the scientific exploration of the Caspian Sea during the 18th century. His primary achievements include:

  • Navigational Guidance: He authored a comprehensive description of the sea that provided the first formal navigational instructions for the region.1
  • Cartography: He produced an atlas of the Caspian Sea, which was published in 1731.1

These works were part of the broader initiative for scientific study of the sea launched under the direction of Peter I the Great.1