Mystery behind Bayesian yacht tragedy as black swan waterspout is 'only half the story' - Bayesian yacht disaster: Unanswered questions remain including why PS30m ship sank - Watch terrifying moment waterspouts batter Italian coast on same day Bayesian yacht was sunk by 'Black Swan' sea twister - Horror CCTV shows doomed Bayesian yacht engulfed by storm as air pockets could keep missing alive