Complex sentence: Under Catherine the Great Fedor Soimonov, also implemented the vision of the state by monitoring the advancement of Russian nautical schools in order to facilitate scientific exploration and geographic coverage of the new Russian territories by better preparing Russian captains and crews for shipping on the open seas.
Split into simpler sentences: Under Catherine the Great Fedor Soimonov, also implemented the vision of the state by monitoring the advancement of Russian nautical schools. His task was meant to facilitate scientific exploration and geographic coverage of the new Russian territories by better preparing Russian captains and crews for shipping on the open seas.