Riva 50-meter Superyacht Under Construction Veteran Italian yacht builder Riva Yachts is presently working on their first 50-meter superyacht. The yacht is under construction at their yard in Ancona. Remember back in 2014 the yard launched its first true superyacht standard vessel with the 37-meter "Sol". When this 50-meter build is completed it will assume the new flagship status for the yard. The design is by the usual suspects in collaboration with Officina Italiana Design.