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Smit, Dominique (author)
The subject of this thesis is the development and evaluation of a modular well intervention business concept. The concept aims to bridge the gap between surface and subsea well intervention markets, currently served by different vessel types, using a platform vessel and equipment modules. The regional scope is South-East Asia, due to its low...
master thesis 2019
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Slingerland, Pieter (author)
More offshore wind projects are being developed. Shallow locations are more occupied and a tendency to deeper water and to larger wind turbines is seen. These create more bending moment which can be more easily resisted by jacket substructures. The state of the art installation process of a jacket is as follows. The foundation piles are driven...
master thesis 2019
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Schothorst, Quinten (author)
In this thesis a model is set up to assess the economic viability of early stage buoyancy design concepts. The main research question is to find out if a versatile design approach to the buoyancy lifting concept, i.e. being able to take on multiple projects, can result in an economical viable solution for decommissioning offshore platform...
master thesis 2018
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Bijleveld, Floriaan (author)
In the past decades the understanding of fracture of ductile material has increased substantially. Research has shown that the onset of fracture highly depends on the full state of stress inside the material. Better understanding of fracture resulted in more advanced and complex fracture models being conceived, allowing researchers to predict...
master thesis 2018
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Dumans, Max (author)
Boskalis subsidiary Dockwise is the global market leader in heavy marine transport. Their fleet of over 20 semi-Submersible Heavy Transport Vessels (SHTV) is capable to carry the heaviest and largest structures. Until today the load or discharge operation of a floating body has only been performed in sheltered waters. Here, the influences of the...
master thesis 2017
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Huiskes, S.W.G. (author)
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...
master thesis 2016
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Luchs, M. (author)
The world is rapidly embracing networked technology and transitioning into one of hyperconnectivity, a term first coined by social scientists Anabel Quan-Haase and Barry Wellman. Increased connectivity provides benefits such as automation and, remote access and control of networks and equipment, thereby decreasing operational costs. Maritime and...
master thesis 2016
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Oude Ophuis, R.B.A. (author)
Offshore barge mooring is considered a critical operation. The vessels need to be in close proximity, but may under no circumstance collide. Mooring lines and fenders are installed to keep the vessels in place. Experience has shown that lines tend to break occasionally; one of the reasons for this can be the interaction effect of the two vessels...
master thesis 2016
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Bartstra, T.P. (author)
Structural vibrations are a known cause of damage to offshore structures and equipment. A Cutter Suction Dredger (CSD) is a dredge vessel known to vibrate heavily during operation. Primary cause of these vibrations is the cutting process, performed to cut and excavate soil from the seabed. A component prone to damage is the cutter ladder, a...
master thesis 2016
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Subramanian, K. (author)
The high stiffness to weight ratio of fibre reinforced composites have been utilized in improving the performance of various structures conventionally designed using metals. One such application is the gangway of the Ampelmann system used to transfer personnel safely from and to the offshore platform in sea. In the current work, a preliminary...
master thesis 2016
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Lee, M. (author)
In order for Jumbo to stay competitive in the offshore market, it's heavy lift vessels should be able to take on a wide range of lifting purposes. This can range from installation of transition pieces for wind turbines to installing modules of fpso's and platforms. One of the demands from the offshore market requires large lifting heights. It is...
master thesis 2016
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Kommer, J. (author)
For offshore installation projects Jumbo uses her J-class heavy lift crane vessels. The objects that need to be installed offshore are carried at deck or in the ship's hull. At location the object is lifted by the on-board heavy lift crane and slewed to the side of the ship. From the final overboard position the object can be lowered to the...
master thesis 2016
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Van Berckel, G.J.P. (author)
Brownfield projects are projects done on existing, live facilities. These type of projects have a poor performance record in terms of cost and schedule predictability. Based on findings from industry wide and internal company research, this study developed an approach to mitigate the cost and schedule growth by tailoring the development to...
master thesis 2016
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Crol, J.B. (author)
The subject of this report is the upending of a floating monopile for an offshore wind turbine foundation. This is an assignment of Van Oord Dredging and Marine Contractors BV. An analytical model has been developed to simulate the upending of a monopile in MapleTM, based on the general theoretical principles and the experience of Van Oord. An...
master thesis 2015
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Sijl, G.J. (author)
Seaweed has been part of human consumption ever since humanity met with the oceans. As technology developed more applications for these macroscopic algae were discovered. Global population increased, technology advanced and people started to understand the lifecycle of seaweed allowing them to cultivate seaweed. Seaweed is currently cultivated...
master thesis 2015
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De Groot, K. (author)
Trends in the offshore wind market show that newly installed wind farms move towards deeper waters. Wind turbine generators are currently installed using jack-up vessels, which have a limited operating depth. Installation of wind turbines using a floating vessel is an alternative for the current method, but blade installation is an area which is...
master thesis 2015
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Getreuer, R.E. (author)
Offshore wind energy has become a very hot topic in northwest Europe, both from an industrial as from an academic point of view. Research on transmission grids for offshore wind energy focuses predominately on radial grids and HVDC. This study broadens this general scope by taken mesh grids and HVAC as the starting point. With the use of load...
master thesis 2015
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Calf, I.J. (author)
The out-of-plane bending of offshore mooring chains leads to a rapid deterioration of the chain, ultimately leading to failure in a period that is a fraction of the design-life. The deformation of the contact surface of the chainlinks leads to the interlocking of the link. This in turn causes the chain to behave like a bending beam. The...
master thesis 2015
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Rong, K. (author)
This thesis presents the comparative study of the three different dynamic analysis methods (quasi-static, frequency-domain, time-domain), with respect to the dynamic analysis of the Yme MOPUstor platform. The initiation of this thesis is Allseas engineering project. As a major contractor in the oil and gas industry, Allseas group is seeking a...
master thesis 2015
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Tijsen, J.N.W. (author)
Concrete structures in marine environments subject to sea ice interaction are at risk of erosion and damage. Industry is interested in characterizing the ice abrasion phenomenon so that abrasion risk can be managed. The experiments conducted in this work have an exploratory character in order to identify the abrasion phenomenon and qualitatively...
master thesis 2015
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