ROME — Rescue teams and divers were searching Tuesday for six missing people, including a British tech magnate and a Morgan Stanley boss, after a luxury superyacht sank in a storm off Sicily.

The identity of those still missing emerged after an initial search of the 184-foot sailboat, named the Bayesian, was unsuccessful Monday. The British-flagged tourist vessel had 22 people aboard when it sank because of “a violent storm” off Sicily’s main city, Palermo, around 5 a.m. local time…