Navy Command (NC) requires the delivery of fully authenticated, validated, and current Mission Critical Operational Encyclopaedic Reference Data and digital product libraries. These data sets are essential for the operation of C4ISR systems across frontline Ships, Submarines, and other Royal Navy Units. To fulfil its mission, Data and Information Support (DIS) requires specialist technical support to deliver the specialist outputs.. This includes provision of expert support in database management, modelling, and a comprehensive understanding of the Royal Navy's operational needs. Such expertise ensures the effective delivery of "Through Life Capability Management" (TLCM) services, encompassing the capture of Fleet information requirements, data management, and system application support.