The Perini Navi Group has recently published a video showing the mast stepping of their PERSEUS³ yacht. Luxury sailing yacht PERSEUS³ (P3, hull C.2218) is a majestic 60-metre sloop, boasting one of the tallest masts in the world, measuring 75,80 meters in length. It was delivered by the spar maker Future Fibres, and assembled at the Perini Navi facility in La Spezia, Italy.