Ocean loading analysis does not allow input of forward speed explicitly. To account for forward speed, it is necessary to specify an opposite current. If forward speed and a current are required, the specified current must represent the resultant of the two effects. This current is used only for the calculation of Morison loads following the diffraction calculation.
If the panel pressures and motions are obtained from AQWA, it is also possible to define a forward speed in the diffraction calculation, causing the hydrodynamic coefficients to be corrected for the effect of forward speed. The following restrictions apply:
Forward speed can be along the global X axis only.
Only one wave direction can be specified in a diffraction calculation with forward speed.
It is your responsibility to ensure that forward speed in the diffraction calculation and current in the load transfer are consistent.