Social, cultural, geographical, and ethical values are component parts of port heritage, but they are difficult to quantify and to encapsulate into the market system. To evaluate the economic value of ports, port heritage has to be regarded as an economic driver. This article suggests that tourist and historical patterns are one of the approaches that can encourage developers or investors to explore the potential business opportunities of port heritage. Because port heritage has a strong link to local character, the development of port heritage will, in turn, strengthen the local economy. Marketing and managing port heritage is a way to ensure the success of a tourist–historic scheme. Port heritage is a record of the human use of the sea in all its diversity over a range of timescales. Furthermore, the “maritime heritage image” itself has become a major economic resource, not only in what remains and continues to develop in specialist maritime communities but also in the museums, archives, restoration works, and elsewhere for educational and recreational purposes.