Local Buckling and Collapse of Thick-Walled pipe

Heerema Marine Contractors is an offshore contractor who specializes in the installation and removal of a range of offshore facilities. This includes the installation of submarine pipelines in excess of 1500 [m] water depth. Higher water depths drive the pipeline designs to increase wall thickness. Another motive to apply a low D/t ratio is to...

Motion analysis of a Semi-Submersible Crane Vessel at Inconvenient Draft: A flooding Tank approach

Conventional computer programs based on radiation-diffraction theory are not able to predict the motions of a semi-submersible crane vessel in case the pontoons are only slightly submerged. Cause of the erroneous results are non-linearities like breaking waves on top of the pontoons and emergence of the pontoons itself. Objective of this thesis...

Modeling of hydrodynamics around in-line structures in installation analysis

Thesis on hydrodynamic forcing descriptions on complex shaped in-line structures during the installation phase and their impact on the dynamic behaviour of the catenary.