A former high-level shipping executive was sentenced today to serve 48 months in jail and to pay a $20,000 criminal fine for his role in an antitrust conspiracy involving the transportation of goods to and from the continental United States and Puerto Rico by ocean vessel, the Department of Justice announced on Jan. 30. This is the longest jail sentence ever imposed for a single antitrust charge. Peter Baci of Jacksonville, Fla., pleaded guilty on Oct. 20, 2008, in the U.S. District Court in Jacksonville for his role in the conspiracy, which began at least as early as May 2002 and continued until as late as April 2008. Baci was charged…