Wear performance in the marine environment always limits the application of coatings in critical components. Hence, a kind of wave-like nano-layered coating is developed and investigated. Synergy degrees of coatings in the tribocorrosion system are quantified and the corrosion mechanism of coating containing Ag in seawater under friction condition is clarified. Results indicated that the wave-like nano-layered coating exhibits the maximum hardness (37.8 GPa), exceptional toughness with the maximum micro-hardness dissipation parameter value (0.79) and the greatest synergy ratio. Excellent tribocorrosion performance attributed to the formation of reaction film, which acts as a barrier to block the penetration of corrosive media in seawater into coating to some extent.