Composite materials have been more and more used in transport, to lighting it and reduce fuel consumption and pollution. Composites have high specific stiffness (Elastic modulus/specific mass) and reducing mass and increasing stiffness of a structure is likely to lead to vibro-acoustic issues and potential discomfort to transport users. This issue is commonly tackled using acoustic treatments, which in turn will add weight and make the structure more costly. The functionalisation of a structure with metamaterials is a smart approach to tackle vibro-acoustic problems. In this matter, the use of acoustic black holes (ABH) has been studied since late 80s and has been gaining momentum with an exponential increase in publications and patents for the last 10 years. This development used ABH glass fibre functionalised structure by producing 4x 1m² plates, with 3 of them using ABHs to prove that Naval composite structures can be vibro-acoustically treated without adding mass. A simulation modelling helped to design the plates with the best ABH parameters. A comprehensive state of the art was done with more than 50 high level references (including journals, thesis, congresses, etc.), and the 3 functionalised plates (metaplates) were vibro-acoustically characterised, and the results confirmed that the damping added by the ABH could reduce noise by about 4.5dB and weight by more than 15%.