Increasing emphasis is being placed on young officers for deeper knowledge and mastery of the theory for ship seaworthiness through special training with simulators. The practical need to assess specific ship manoeuvring qualities in operational conditions due to the increasing strict requirements of shipping safety creates a need to enhance the reliability and accuracy of real-time ship simulators for training maritime personnel. A key element in the mathematical model is the algorithm for predicting ship maneuvers, and one of the main implementation problems is to determine the unknown hydrodynamic derivatives. The unknown values for a given study situation in the simulators can be achieved by computer tools and libraries from CFD programs. Calculating the hydro and aerodynamic forces and moments gives the necessary coefficients used to predict or evaluate the taken ship trajectory. Results obtained for a 1:1 ship scale in viscous fluid conditions of 4.0d deep water, 1.8d medium deep water, 1.5d shallow water, and 1.2d very shallow water while moving at low speeds at 2.0, 3.2, 4.0, and 5.2 m/s on undisturbed water with free surface effect will contribute significantly to the accuracy of the total resistance. Knowledge of ship behaviour in areas with shallow water in the presence of wind is critical for reducing dangerous situations and enhancing the qualities and peace of mind to marine officers. Visual examples and a thorough understanding of theory combined with practice would raise the living standard for all in the maritime industry by lowering the number of critical moments.