Flow‑induced noise is a critical challenge in the marine and offshore sector, where turbulent fluid motion around structures and equipment can generate unwanted vibrations and acoustic emissions. These noises not only affect crew comfort and operational safety but also influence structural integrity and environmental compliance. CFD helps to optimise in flow induced noise hull and propeller designs to reduce cavitation and wake‑induced noise, improving efficiency and passenger comfort. Simulations of flow around risers, braces, and subsea pipelines reveal vibration‑inducing vortices, guiding design modifications for quieter operations. Offshore wind turbines and wave energy devices benefit from CFD‑based acoustic analysis to minimize environmental impact on marine life.