5. Phocea. Dating back to 1976, Phocea was conceived as a racing yacht, built at Toulon Naval Dockyard. She was soon converted into a charter yacht. Coming in at 75.1 meters (246 feet), Phocea was acquired for private use in the late 1990s by Mouna Ayoub, a Lebanese businesswoman alternately referred to as a socialite and a super-shopper, with a huge haute couture collection. She’s one of the few women to own a megayacht (a woman now also owns Maltese Falcon). Ayoub took the yacht to Lürssen for a thorough refit, including making the interior look much like that of a fine home. Exquisite inlays can be found on soles and doorways. Phocea charters for €280,000 (about $245,000) per week.