TY JOUR TI Assessment of navigation safety using systems based on fuzzy logic in conditions of insufficient navigation information KW safety of navigation KW the state vector KW control vector KW assessment of position accuracy KW the figure of the accessories of the vessel KW the matrix of control JO Operation of Maritime Transport AU Javuktsyan, M.L. AU Studenikin, D.E. AU Popov, V.V. PY 2020 IS PB Budget Educational Institution of Higher Education “Admiral Ushakov State Maritime University”