Abstract: Embodiments of the invention generally relate to computational systems and methods for managing maintenance of a complex structure. A model of the structure is created and stored, which may be a 3D model of the structure including a 3D map, the model defined with reference to components of the complex structure. Maintenance parameters associated with the components are also stored. Examples of possible maintenance parameters include condition rating, criticality rating, access method and cost. Inspection data is input and received by the computational system. A maintenance plan is generated dependent on the maintenance parameters and the inspection data. The model is displayable as part of a 3D map provides a visual representation of information relating to the structure, which may include aspects of the inspection data, the maintenance parameters and the maintenance plan. Embodiments of the invention also relate to a computational system and method for managing maintenance of a painted or coated structure.