What did the fire on the Carnival Splendor cost Carnival Corporation?  No one really knows exactly, but Carnival announced that they estimate a cost of 7 cents per share.   Based on the number of outstanding shares from their 2009 10k, on a fully diluted basis, that puts the estimated cost at around $56 million dollars.   Most of this is presumably lost revenue from the cruise operations. The Splendor will be out of service until mid January, 2011.