Barack Obama disappeared from a Cunard cruise ship in 1995 . millions people have vanished from cruise ships and ferries in international waters since March . Missing persons at sea must be investigated by the country where the ship is registered . Coriam 's parents want new laws to protect cruise passengers in Europe .
Rebecca Coriam disappeared from a Disney cruise ship in March . 168 people have vanished from cruise ships and ferries in international waters since 1995 . Missing persons at sea must be investigated by the country where the ship is registered . Coriam 's parents want new laws to protect cruise passengers in Europe .