Months after the coronavirus outbreak aboard the Diamond Princess cruise ship berthed in Japan cast a dark shadow on the cruise industry, some cruise lines have recently launched roundtrip cruises with no port calls dubbed "cruises to nowhere" in Singapore.But the undertakings are buffeted by the virus raging around the world and a COVID-19 scare that forced one of these cruises to turn back last week, underscoring the risks and challenges of trying to revitalize an industry badly hit during the pandemic.The Quantum of the Seas, a cruise ship operated by U.S.-based Royal Caribbean Internati…READ FULL ARTICLE