TY JOUR TI Analysis of shaft coupling failures on marine transport vessels KW Propulsive complex KW shaft couplings KW ship shaft lines KW fatigue KW visual inspection KW flange part of shaft coupling KW grating KW wavy cracks KW point corrosion KW micro structure of shaft coupling JO Operation of Maritime Transport AU Koperchak, O.P. AU Ogurtsov, D.V. AU Khalilov, N.A. PY 2021 IS PB Budget Educational Institution of Higher Education “Admiral Ushakov State Maritime University”