TY JOUR TI Some aspects of vessel’s movement in congested waters analysis for preliminary route planning KW preliminary route planning KW data mining KW decision support system KW clustering JO Operation of Maritime Transport AU Studenikin, D.E. AU Kondratev, S.I. AU Javuktsyan, M.L. PY 2019 IS PB Budget Educational Institution of Higher Education “Admiral Ushakov State Maritime University”