A low-aspect fin (wide but not too deep) is required on this big yacht to minimize draft; otherwise the fin would project beneath the keel. High-aspect fins (narrow and deep) are more efficient, because of their longer leading edge, but not always practical.
U.S. Submarines is a company with a dream. And that dream is building underwater megayachts for clients with both the cash and the chutzpah for such a venture. Right now the company has a 118-foot project in the works. And we’ve got images of it. Click here to see them. ▶