Digital Twin (DT) is a technology that creates a digital replica of a physical object or system, enabling virtual monitoring, simulation, and testing. DT technology integrates historical and real-time data to predict future situations, proving advantageous in areas with high-value assets. In the maritime industry, DT plays a crucial role in the development of autonomous vessels, predictive maintenance, energy management, and port operations. DT facilitates the simulation of maritime environmental conditions and the monitoring of vessel health, hence improving operating efficiency and mitigating hazards. The main challenges in DT implementation encompass sufficient information technology infrastructure, data integrity, security, and interoperability. By tackling these difficulties, DT possesses significant potential to transform the marine sector, enhancing data-driven decision-making and promoting more efficient and environmentally sustainable vessel management.