Wave power system

A wave power system for extracting energy from water waves, the wave power system comprising:

• a basic structure comprising at least one straight track section;
• at least one effector movably engaged with said basic structure and configured for being moved by water waves along said straight track section in a travelling length between two stop locations;
• and
• an energy harvesting arrangement configured to harvest energy from relative movements between said at least one effector and said basic structure along said straight track section,
• wherein said at least one effector comprises:
• a backbone structure comprising at least one support shaft having a support shaft axis;
• and
• at least one winglet with a root, a remote edge farthest from the root, a length perpendicular to the support shaft and between the root and the remote edge, and two opposite winglet faces,
• wherein the winglet is rooted to and protrudes from said support shaft,
• wherein said winglet is turnable between operation modes comprising an acceleration mode, an intermediate mode, and a deceleration mode, relative to the support shaft axis, and
• wherein said winglet, at least in a compliant portion, is more compliant than the support shaft.