NEW : The rescue/recovery operation on the ship could take weeks , a diving expert says . Rescue operations resume , despite concerns about the weather . Emergency personnel in the open-air part of the ship need ropes to get around , because the floor has become the wall in most cases . Comment: The Concordia is practically a skyscraper in two directions : 17 decks high and 951 feet long .
NEW : The rescue/recovery operation on the ship could take weeks , a diving expert says . Rescue operations resume , despite concerns about the weather . Comment: The Concordia is practically a skyscraper in two directions : 17 decks high and 951 feet long .