Simulation of ship turning circle test for ballast and full load conditions

The data show the results of the turning circle spiral test for the simplified ship model, taking into account two states of loading: ballast and full load. During the circulation test, the manoeuvrability of the vessel is tested. The test consists of left (L) and right (R) manoeuvring at the maximum permissible rudder angle for a given vessel speed. The manoeuvre lasts until the vessel makes two or more full rotations. The result of the circulation test shall be shown on the vessel path diagram in the plane, as shown in the figure. The indicators determining the manoeuvrability of the vessel for the circulation test are: transfer at 90 (deg) heading (x090), tactical diameter (y0180), circulation diameter (fixed) (Dc), maneuverability (Dc/L). The criteria for deciding whether the maneuverability of the ship is satisfactory are set out in the rules of Classification Societies, such as the Polish Register of Shipping (PRS). The data set contains the results of time simulation for sea state 40on the Beaufort scale: changes in rudder angle delta_tab(deg); angular velocity r_tab(deg/s); surge velocity u_tab(m/s); sway velocity v_tab (m/s); surge position x_tab(m); sway position y_tab(m); course kurs_tab(deg); propeller revolution ns_tab (in revolution per second). Circulation test inputs: set rudder angle: delta_z_tab(deg), Time of starting rudder execute: t_rudderexecute 200(sec), No. Beaufort scale: No_B=4(0B), wind angle:gamma_w =90 (deg), set propeller revolution: ns_tab=1.78 (in revolution per second).本数据集收录简化船模回转螺旋试验（turning circle spiral test）的试验结果，试验覆盖压载（ballast）与满载（full load）两种装载工况。试验过程中，将对船舶操纵性开展测试：以给定航速下的最大允许舵角分别实施左舷（L）与右舷（R）操舵，直至船舶完成两圈及以上的全旋回。旋回试验的结果需绘制于平面船舶轨迹图中，如附图所示。用于表征该旋回试验船舶操纵性的指标包括：航向偏转90°时的纵移量x090、战术直径y0180、固定旋回直径Dc、操纵性指数Dc/L。船舶操纵性是否合格的判定标准详见各船级社（Classification Societies）规范，例如波兰船级社（Polish Register of Shipping, PRS）。本数据集包含蒲福风级（Beaufort scale）4级海况下的时域仿真结果，具体参数包括：舵角δ_tab(°)、角速度r_tab(°/s)、纵速u_tab(m/s)、横速v_tab(m/s)、纵位移x_tab(m)、横位移y_tab(m)、航向kurs_tab(°)、螺旋桨转速ns_tab(转/秒)。旋回试验的输入参数如下：设定舵角δ_z_tab(°)；舵机启动时刻t_rudderexecute=200秒；蒲福风级编号No_B=4（0B）；风舷角γ_w=90°；设定螺旋桨转速ns_tab=1.78转/秒。