Tackchoir

Tackchoir is a touch-first miniature 3D sailing puzzle. Three persistent ships share one spring-lagged world wind but own different sail power, keel deflection, drag, identity, wake, and harbor. The player drags one compass handle; that one vector accelerates every live hull through its own response law. A voyage succeeds only when Lark, Tern, and Moth are each physically inside their matching A, B, and C dock rings, all three hull velocities are below tolerance, the common wind is calm, and the complete state remains stable through one harbor dwell.