Caterpillar Marine and Power Systems was one of the most active companies at the 2013 International Workboat Show in New Orleans, debuting several new products that are compliant with EPA Tier 3 and 4 regulations, and finalizing the acquisition of propulsion equipment manufacturer Johan Walter Berg AB. Caterpillar Inc., which is one of the biggest names in industrial equipment, engines and turbines, recorded 2012 sales revenues of $65.9 billion. Contributing to that sum is Cat’s globally-operating subsidiary…