The concept of Digital Twins provides a conceptual way of improving the through life support of Marine platforms. The collation of machinery information through connected smart sensors and connectivity ashore enables advanced data analytics providing insights into the causes and trends for platform or fleet performance. The opportunities are vast however, the challenges are also considerable. Increased sensor connectivity similar to the Internet of Things can lead to considerable cyber security concerns, and the amount of information available will need to be presented to the user in a suitable but succinct manner possibly using visualisation technology. How this vision is brought together alongside legacy processes, tools and data centres is non-trivial but modern solutions and approaches make a Digital Twin possible.