38M Explorer By Rosetti Yachts Update In May, 2019 YF alerted you to the construction of a Rosetti 38-meter Explorer-type yacht. Construction has continued along and it is time for an update with some interior renderings. Back then the keel was laid with the coin being welded into a section of the keel. Since then the hull has progressed and is nearing completion. The superstructure is expected to be joined to the hull in February, 2020.