Biofouling, microorganisms adhering to ship hulls during navigation, has become a major issue in the shipping industry significantly reducing vessel stability and fuel efficiency. While various hull coating techniques have been devised to replace inefficient underwater physical treatments, most use biocides that damage marine ecosystems. ZIF-8, a type of MOF, demonstrates excellent performance as an eco-friendly coating material due to its water stability, biocompatibility, and ease of synthesis and decomposition control. We propose a novel mechanism where ZIF-8 is coated on the hull surface in an aqueous solution before a voyage, decomposes with biofouling after the voyage, and re-synthesizes for reuse. Experiments with ship prototypes verified the stability of ZIF-8 coating and successfully demonstrated its processes. Commercializing this technology could lead to the sustainable development of the shipping industry through eco-friendly biofouling removal and reduced economic losses.