As part of the InfraQuest research into the sustainability of immersed tunnels in the Netherlands, a study was carried out at Delft University of Technology to analyze the up and down movements of the Vlaketunnel. InfraQuest is a joint research program of the Ministry of Infrastructure, Delft University of Technology and Delft TNO. The research was done by N. Benhaddou as a final MSc. project.