Alloy 43 By ISA Has Been Sold The already in-build Alloy 43 by ISA Yachts has been sold in a recent confirmation by the yard. General Manager at ISA Yachts, Francesco Carbone is happy with the sale and says it has gone to a customer who is experienced having owned several yachts in the past. The yacht is called the Alloy 43 because of its all-aluminium construction. As for the design the exterior and interior were done by Italian designer Luca Dini. Naval Architecture was in-house by the yard.