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Meijer, Diederik (author)The offshore wind sector in Europe has grown significantly over the past 20 years. Following this surge in number of installations, the first generation of turbines is reaching its end-of-life (EOL) phase and thought needs to be put into end-of-life strategies. As the market for lifetime extension is still in its infancy and...master thesis 2022
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Rivera Arreba, Irene (author)Floating wind turbines (FWTs) are proposed as a method to harness the significant wind energy resource in deep water. International research efforts have led to the development of coupled numerical global analysis tools for FWTs in order to understand their behavior under wind and wave actions. The hydrodynamic models in such tools are typically...master thesis 2017
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van den Berg, Maarten (author)In current offshore wind turbine (WTG) tower installations, bolted flange connections are common. These connections are however reaching their limit due to the maximized size of the bolts. Also, bolted connections require the motions between the tower and foundation to be limited during installation, suggesting their workability of installation...master thesis 2020
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Willemse, Joost (author)Shell is working on mono-diameter drilling (MOD). A MOD well, or MOD well section, has a (nearly) constant diameter over several sections. This is achieved by deploying expandable liners: a liner is lowered into position and is expanded by pulling an over-sized cone through it. This plasticly deforms the pipe, increasing its inner diameter to...master thesis 2018
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Ilahibaks, Shaneeza (author)In the design of offshore wind turbine generator (WTG) support structures, a large number of environmental parameters are used. The most important ones include the wind climate (wind speed and wind direction probability distributions), the wave climate (wave height and wave direction as well as peak frequencies of the waves, and water levels)...master thesis 2020
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Navarro Riveros, Claudio (author)One of the key aspects of sustainable development is to reduce the greenhouse gas emissions. In order to achieve climate goals, it is expected that wind energy will increase its importance in the electricity production. Offshore wind energy is expected to triple its installed capacity between 2020 and 2025. Several countries have expressed plans...master thesis 2018
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Keijdener, Chris (author)In light of the recent increasing interest in the oil and gas developments in the arctic region, Huisman Equipment B.V. started development of a drilling semi-submersible suited for arctic condition. Model tests were performed by the Krylov Shipbuilding Research Institute to gain insight in the ice forces acting on the structure. Based upon the...master thesis 2012
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Steensma, M. (author)When a shipwreck lies in an undesirable place it can be lifted out of the water or moved to larger water depths(scuttling). Commonly used methods for this procedure are the use of floating sheerlegs, crane ships or chain pullers. Floating sheerlegs and crane ships can be used for lifting the shipwreck through the water column, where chain...master thesis 2016
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Ouchene, Bilal (author)Areas of railways with considerable variation of track properties encountered near structures such as bridges and tunnels are referred to as transition zones. Degradation rates at these transition zones are higher compared to the remaining railways. These high degradation rates result in high maintenance expenses. In order to come up with...master thesis 2021
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- Vogelzang, J. (author) master thesis 2017
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Kronenberg, Bram (author)Due to the increasing demand for sustainable wind energy, larger wind farms with more giant turbines are required. Therefore, more is expected of the existing installation vessels for wind turbines. These changes make it increasingly difficult to find capable jack-up vessels to transport and install these new "mega turbines". Another trend in...master thesis 2021
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Visser, N. (author)The Double Slip Joint (DSJ) is a new design to connect the transition piece to the foundation pile of an offshore wind turbine. It potentially offers high dynamic strength and reliability at a lower cost thereby assisting the decrease in cost of wind energy. The design is based on a self-locking principle through vertical settlement of the joint...master thesis 2015
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SOULIOTIS, MARINOS (author)In the race for cost reduction in the offshore wind industry, support structure optimization leading to weight reduction plays a prominent role. The fatigue limit state is often the driving consideration for support structure design. Monitoring the monopile loads can offer an accurate knowledge of its consumed and remaining fatigue lifetime,...master thesis 2017
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van Middelkoop, K. (author)The number of wind farms that are commissioned, being installed, or prepared is still increasing due to a growing demand for green energy. To benefit from the higher wind velocities, which can be found at sea, and to prevent the pollution of the horizon, wind farms are being built offshore and installed in an ever increasing water depth. The...master thesis 2016
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- Okret, D.A. (author) master thesis 2016
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Snel, T.W. (author)An ventilated composite shallow foundation for subsea structures is designed. The ventilated grating configuration improves operability of the installation through the splash zone. By penetrating into the soil, the foundation provides sufficient bearing capacity due to the additional generated skin friction. Furthermore, the seabed landing is...master thesis 2016
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Bron, V.A.G. (author)At different locations in the Caribbean cruise jetties have been damaged during hurricanes. The specific cause of the damage is unknown. In this research the role of the dynamic behaviour of a jetty investigated. This research has the goal to elaborate circumstances under which the dynamic behaviour of the open piled jetty on Sint Maarten...master thesis 2013
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Hartmans, T. (author)Heerema Marine Contractors (HMC) owns and operates several semi-submersible crane vessels (SSCVs), used for offshore heavy lift operations. In preparation of these operations, hydrodynamics analyses in the frequency domain are conducted using software developed in-house at HMC. These analyses result in Response Amplitude Operators (RAOs), which...master thesis 2016
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- Holtkamp, F.T.M. (author) master thesis 2016
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Bosma, Marten (author)Heerema Marine Contractors is assigned to execute the installation of 64 monopiles for the He Dreiht Offshore Wind Farm provided by Energie Baden-Württemberg (EnBW). The installation of the monopiles is done by means of a template structure. This template is specifically designed for this project and is installed on the seabed temporarily. The...master thesis 2023