FIELD: shipbuilding.;SUBSTANCE: invention relates to production of underwater vehicles and can be used for prediction of trajectories of underwater vehicles performing complex maneuvering. Inner computational grid around three-dimensional electronic model of underwater object is shaped to spherical shape with center of sphere coinciding with point of rotation. Aft horizontal sternplanes (SP), upper vertical rudder (UVR), lower vertical rudder (LVR), bow diving planes (BDP) or fairwater diving planes (FDP) forming local deformable computational grids with the possibility of shifting SP by an angle δSP, UVR at angle δUVR, LVR at angle δLVR, BDP per angle δBDP or FDP at angle δFDP. Submarine angular movements are sequentially set by angles of attack α, drift β and bank θ at different angles of rudders of rudders δSP, δUVR, δLVR, δBDP or δFDP. As a result, stationary hydrodynamic effects on underwater object are determined with consideration of rudders at different values of angles of attack α, drift β and bank θ, and analyzed. Positional hydrodynamic characteristics of the underwater facility are determined with account of rudders.;EFFECT: higher safety and accuracy of underwater object control.;1 cl, 8 dwg
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