Abstract: Objectives This review paper aims to systematically organize the latest progress of acoustic metamaterials in the field of naval architecture and ocean engineering, focusing on the transition from fundamental research to engineering applications, and to outline a future development blueprint, thereby providing a clear reference for researchers and engineers.. Methods By reviewing the two-decade development of the field and focusing on breakthrough directions in the past five years, the article systematically elaborates on the developmental pathways of key technologies, including intelligently tunable acoustic metamaterials, deep learning-assisted inverse design, high-performance underwater anechoic coatings, and novel vibration-isolating metastructures.. Results The analysis indicates that acoustic metamaterials have demonstrated systematic potential in addressing the full-chain vibration and noise challenges of ships. Designs based on new mechanisms such as local resonance and wavefront manipulation have achieved a series of advances in low-frequency vibration control of equipment, highly efficient noise reduction in cabins with ultra-thin structures, and broadband acoustic stealth underwater, signifying the technology's transition from laboratory settings to marine environments..Conclusions Despite existing challenges in environmental adaptability, engineering robustness, and mass production, the inherent advantages of acoustic metamaterials—such as high efficiency at low frequencies, compactness, and designable functionality—position them as a potentially transformative solution. Their deep integration with intelligent design and multi-physics coupling will propel ship vibration and noise control towards dynamic adaptability and systematic intelligence.