You’ve never seen a masthead anemometer like this before. This innovative new design has a digital compass and all electronics in the wind direction arrow itself. The arrow knows which way it is pointing; no calibration with the bow of the boat is necessary. Solar panels are used as the tail of the wind direction arrow, inside a hermetically-sealed shell to make the entire unit submersible. The shell is clear, to allow the sun to charge the solar panels inside.
Miniature ceramic ball bearings that can never corrode, and move the wind cups and wind direction arrow in even the lightest breeze. The battery is the counter-balance in the nose cone. An engineering achievement that is waterproof, has moving parts, works outside year-round in hot UV rays and cold temperatures, and generates its own renewable energy.