5 E2Es

Formats: BQM, CQP, DXF, HQF, HQV, IQP, PAT, PLT, QCC, QLI, SSD, and TXT.

Also pronounced seikaiha. A wave design made of the arches of concentric circles superimposed upon one another so that only the upper portion of each set of circles is visible. It was used in China to depict the sea on ancient maps.