V Racing Day, Passage to Zadar (27 nautical miles). The central square of Zadar is an open-air museum. Sea organ – a series of steps leading to the sea – a musical instrument. Beneath the marble steps are hollow pipes that create music as waves pass through them, creating a harmonica effect. Hail to the Sun – A disk of 300 solar panels embedded in the floor absorbs the sun’s rays during the day, then, at dark times, reproduces an intricate pattern of multi-colored lights on the floor. Quest “Physics and lyrics.”