The Maritime Culture Festival (목포해양문화축제) is coming to Mokpo's Hadang from the 31st through August 4th.
It will be held at and around the Peace Park (평화공원). You can view the program, in Korean, here. Highlights include the multimedia fireworks show on the 31st from 10:30 to 11:00. It should be noted the website directs you to the "Logo Song" (here as .mp3). It's a rap.
There will be a shuttle bus from Peace Park from 1 p.m., with two courses: one to the port, one toward the Culture Center. All in all, looks pretty neat. Those living in or visiting Mokpo might be interested in "Museum Road," or might like to wander around the city, which Robert Koehler of The Marmot's Hole called "an outdoor museum of colonial Korea" in this excellent post. Also take a look at his piece in Seoul Selection, starting at page 77.