Complex sentence: Fincantieri successfully completed the acquisition of Manitowoc Marine Group from its parent company The Manitowoc Company, Inc. on Jan 1,2009, which consisted of two shipyards in Wisconsin, including Marinette Marine who built the LCS-1.
Split into simpler sentences: Fincantieri successfully completed the acquisition of Manitowoc Marine Group from its parent company The Manitowoc Company, Inc. on Jan 1,2009. Comprised of two shipyards in Wisconsin, including Marinette Marine who built the LCS-1.