In mid-October of 2013 Capt. Mark Duthu of Montgeut, Louisiana was proudly showing his family around his new command. The 72 by 30-foot pushboat MV Gunner was about to leave the New Generation Marine Shipbuilding on the Intracoastal Waterway near Houma, Louisiana. With the Louisiana Marine Operators logo proudly displayed on her stack she would join the company’s diverse feel of workboats, tug and utility vessels. The yard, started last year by Joe Gregory, is well laid out with…