TY JOUR TI Analysis parameters for vessel’s prohulsive coefficient calculation. role in environmental protection KW Propulsion unit KW vessel hull KW main engine KW shaft line KW propulsion KW ship design KW greenhouse gases KW economic and environmental factors KW power system KW environment KW propulsion efficiency JO Operation of Maritime Transport AU Koperchak, O.P. AU Ogurtsov, D.V. AU Khalilov, N.A. PY 2020 IS PB Budget Educational Institution of Higher Education “Admiral Ushakov State Maritime University”