Pressures and motion effects of a rigid body modeled by hydrodynamic analysis can be imported for further analysis using ocean commands. For this type of analysis, the wave type in the ocean wave OCDATA command should be set to diffracted wave (KWAVE = 8). The hydrodynamic data is read in via the OCREAD command.

This topic does not describe wave-theory-derived ocean loading (implemented via KWAVE = 0 through 7 on the OCDATA command).