The etak star compass, or paafu, is the navigational memory of the Caroline Islands — a mental instrument that divides the horizon into 32 points marked by the rising and setting positions of key stars. Carolinian palu (master navigators) held this system without instruments or charts, steering by starlines, swell patterns, and the imagined motion of a reference island sliding past the canoe.

Master navigator Mau Piailug made the system teachable by laying white cowrie shells in a ring on sand — a physical paafu — alongside coconut-rib lattices strung with shell markers to model ocean swells. This design system channels that teaching compass: a deep ocean-and-night ground, precise white star points, thin sightlines, and warm sand ribs standing in for the woven wave chart.