WASHINGTON (AP) — The massive superyacht Dilbar stretches one-and-a-half football fields in length, about as long as a World War I dreadnought. It boasts two helipads, berths for more than 130 people and a 25-meter swimming pool long enough to accommodate another...

With a steel hull and an aluminum superstructure, Project Serena blends a modern look with traditional elements. The 55-meter (180-foot) superyacht's exterior lines have been revisited by Frank Laupman of Omega Architects, while the interior...