The SS Davock capsized during a storm on November 11 , 1940 . It sank 210 feet below the surface of Lake Michigan , landing upside down . Its landing and the murkiness of the water made investigations difficult . Divers were able to get the wreck last fall and take footage . They determined the rudder broke in the storm and snapped the propeller . With no power or steering , the ship succumbed to 30-foot waves .
The SS William B. Davock capsized during a storm on November 11 , 1940 . It sank 210 feet below the surface of Lake Michigan , landing upside down . Its landing and the murkiness of the water made investigations difficult . Divers were able to get the wreck last fall and take footage . They determined the rudder broke in the storm and snapped the propeller . With no power or steering , the ship succumbed to 30-foot waves .