A 12-m-long, 4.8-m-wide, and 4.2-m-deep rectangular pontoon has a draft of 2.8 m in seawater (sp. gr. = 1.03). Assuming the load is uniformly distributed on the bottom of the pontoon to a depth of 3.4 m, and the maximum design angle of list is 15°, determine the distance that the center of gravity can be moved from the center line toward the edge of the pontoon.