The Bayesian had a retractable keel – the fin-like structure under the hull that helps stabilise boats and acts as a counterweight to the mast. Andrea Ratti, a nautical design professor at Milan ...

The sinking has left naval experts baffled, as they believe a yacht of Bayesian's calibre ... The keel is a large, fin-like part of the boat that protrudes from its base. "That would have ...