A 1980 graduate of the U.S. Merchant Marine Academy, Hayman holds an MBA from Harvard Business School. Her career includes seagoing work for Exxon Shipping as well as railroad experience for CSX. She also served in domestic and international positions with American President Lines where she became operations vice president for Europe, area manager for Central Europe and global vice president for Port and Container Security. After being called to active duty in the United States Navy in 2002, Susan returned to APL as global vice president for Environmental Affairs.

As Vice President, Health, Safety, Quality & External Affairs, she is responsible for strategic planning, including environmental initiatives. Hayman spearheaded the development of the hybrid-powered, low-emissions tug, which entered service early in 2009.