Horizon Lines said Tuesday that it had large losses in 2011, but turned a proft in the fourth quarter. The line said the profitable last quarter reflects its decision to shed its transpacific container service and logistics business. The domestic container carrier, which serves Alaska, Hawaii and Puerto Rico, announced its 2011 results on the same day that it said it had completed a restructuring to deleverage its balance sheet and return five ships to a charterer. &n...