After graduating from Dartmouth College in 1969, Mr. du Moulin served in the US Navy from 1969 to 1972. In 1974, he graduated with an MBA from Harvard Business School and began his career at OMI Corporation. During his 15 years with OMI, he served as Executive Vice President, Chief Operating Officer, and as a member of the company's Board of Directors. He left OMI in 1989 to start his own company, known as, Intrepid Shipping. That same year, he led a group of partners in a buy out of Marine Transport Lines (MTL), the oldest transportation company in America, after which Intrepid took on the name of MTL. The company later went public and became Marine Transport Corporation (MTC) where du Moulin served as Chairman and Chief Executive Officer. After the acquisition of several competitors, Mr. du Moulin and partners sold MTC to Crowley Maritime in 2000, paving the way for him to re-establish Intrepid Shipping in 2002. Intrepid's fleet includes two tankers and four bulk carriers.

Mr. du Moulin also serves as Chairman of the American Bureau of Shipping North American Committee. He has been awarded commendations such as the US Coast Guard Distinguished Service Medal, the Commodore Award from Connecticut Maritime Association and the Admiral of the Ocean Sea Award (AOTOS) from United Seafarer's Service. He also sits on the Board of Trustees for the Seaman’s Church Institute and serves as Commodore of the Storm Trysail Club, an ocean racing organization. Mr. du Moulin has been a member of Tidewater’s Board of Directors since 2003.