Civil Structural Health Monitoring Workshop. Berlin. Germany. 2012. Report. The experience with regard to the design and execution of Grouted Joints for OWC's is primarily based on small- and large-scale experimental tests as well as calibrated numerical models. Now, the German offshore wind park "alpha ventus" enables measurements of structural behaviour in full-scale wind energy turbines. A prototype measurement system was installed on a Tripod support structure in order to monitor the displacements of a Grouted Joint. This article deals with the conception, application and analysis of the measurement data from this prototype.