What are the tubes on I-95?
A couple weeks ago the Mystery Economic Image of the Day was this: 
What is it? I quote from the Maryland Port Administration Press release:
'The Maryland Port Administration announced today that the Helen Delich Bentley Port of Baltimore will begin receiving the first shipment of a series of wind turbine parts on Dec. 12 [2006] at the North Locust Point Terminal. The eventual number of turbines to be imported from various locations around the world over the next five to six months will be 32...
'The elements for these giant wind-power turbines once completed at their final destination, in Pennsylvania, will weigh 290 tons each, will span a diameter of 300 feet from blade tip to blade tip and reach a height of 250 feet.
' "The extreme dimensions of this cargo require planning equal in size. Our logistics team has worked hard in preparation of our first vessel to Baltimore and we look forward to a safe and efficient discharge," said Kris Helling, logistics manager for Suzlon Wind Energy Corp.'
