The multi-region matching approach is employed for moonpool hydrodynamic analysis. The moonpool hull surface, inside mean free surface and matching surface are represented by triangular and/or quadrilateral panels.

The relevant nodes of the moonpool panels are defined in the Node Number and Coordinates (Data Category 1) in the same manner of the other Aqwa node definition.

Multiple moonpools associated with a structure can be configurated. Each moonpool definition in the Element Topology - ELM* (Data Category 2) starts with The MOON Data Record—Moonpool Definition Sub-Header and finishes with The MFIN Card—Moonpool Separator.

The LHFR–Calculate Low and High Frequency Hydrodynamic Properties option is switched on if a moonpool is defined.