A luxury superyacht carrying foreign tourists capsized and sank off Sicily in bad weather. Authorities said Monday that one body was found, six people remain missing and 15 people were rescued. The vessel had overturned around 5 a.m. off the port of Porticello. The Italian coast guard said that the superyacht had a crew of 10 people and 12 passengers. They included British, American and Canadian nationalities. Local media said a sudden fierce storm that included tornados over water known as waterspouts had battered the area overnight. But skies were clear and seas calm by Monday morning. Eight of the people initially rescued were hospitalized. The British-flagged Bayesian was known for its single 246-foot mast.