WP3 Digital modelling of monitored infrastructure with real time updating is devoted to the planning of the actions necessary to test the performance of the inspection and monitoring systems developed along the WP2 in order to develop efficient models and machine-learning techniques for data fusion and population of the virtual environment. Data analysis coming from different instrumentation techniques for the short-term and long-term monitoring of the structural behaviour will be used to update the infrastructure Digital Twins (DT) forming an efficient functional system involving different complementary experimental observation techniques, respecting standardized procedures and enabling the analysis of accuracy. Two real case studies of infrastructure will be selected in each country, Italy, Slovakia and Morocco. Some of them will be maritime harbour or offshore platforms, which are strategic in terms of security for the involved countries and their relation with NATO.