Adler Suprema X Starts Build The largest yacht for Adler leaves the design boards and starts construction. The Adler Suprema X when launched will become the yard's flagship vessel. It has started build on a speculation basis with hope to get it sold soon. The design is the fruit of Nuvolari & Lenard who have continued their partnership with Adler Yachts. The 83-foot (25.2-meter) yacht is being built from carbon which is one of the strongest composite materials outside of steel construction in the yacht business.