Searched for: contributor:"Hoving, J.S. (mentor)"
(1 - 20 of 26)

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Symes, Patrick (author)
This thesis aims to provide insight into the conceptual design phase of Tetrahedron B.V. with regards to buckling stability. Currently, Tetrahedron B.V. assumes an effective length factor of one for determining the cross-section profiles of the Tetrahedron Crane. In this thesis, Euler-Bernoulli beams are used to model every member of this crane,...
master thesis 2020
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Smit, M.C.A.M. (author)
Fast growing offshore maintenance work scopes increase the demand for better insights in cost and risk reduction opportunities related to redundant work scope maintenance activities. This report describes the research on developing a structured selection methodology to compare benefits between different strategies on removing or maintaining...
master thesis 2017
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Brouwer, M.H.H. (author)
master thesis 2017
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Rasch, C. (author)
This thesis entitled "Modelling of cyclic degradation - Development of a cyclic accumulation model and the application to a gravity based foundation" presents a new soil model to analyse the behaviour of undrained soils subjected to cyclic loading. Cyclic loading on offshore support structures for wind-turbines results in complex design...
master thesis 2016
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Ibrovic, V. (author)
master thesis 2016
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Eikelboom, H. (author)
Water spray is a major contributor to icing of ships and maritime structures. The small size of the droplets in the water spray causes them to easily cool down and freeze to the different structures. Icing can hamper operations on both ships and other maritime structures due to blockage of equipment and slippery deck areas. Besides, if icing...
master thesis 2016
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Taams, V.J. (author)
Reel-lay operations in deep water with Heerema Marine Contractors (HMC) DCV Aegir showed the onset of axial twist during pipeline lowering and lay operations. For both phases of the pipelay, models have been made to approximate the twist observed during operations. The suspected instigators of pipeline twist that have been researched are:...
master thesis 2016
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Eisses, D.A. (author)
Fixed steel structures in the North Sea that are approaching end of life are increasing in mass and dimensions, this imposes challenges on the current decommissioning strategies. The main challenges arise during removal of the barge-launched substructures. In contrast to the topsides of these large structures the substructures cannot be easily...
master thesis 2016
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Van Popta, C.M. (author)
master thesis 2016
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Van Dalfsen, A. (author)
Due to the growing offshore wind energy market and the increasing interest of the oil and gas industry, there is a steadily increasing demand for the use of jack-ups all over the world. Particularly, the number of wind turbine installation vessels has increased from 2 in 2005 to 40 currently, with a yearly growth expectation of 30% till 2020....
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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Hoes, C.M. (author)
The operations of ships in Arctic areas are delayed and endangered by icing, which is caused by sea spray that freezes onto the ship due to sub-zero air temperatures. During this graduation project an marine icing model is developed (SHIPICE), which considers the ballistic and thermodynamic process of sea spray droplets while flying through the...
master thesis 2016
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Balkema, E. (author)
Drilling in the complex and rough conditions in the Arctic areas is challenging. The challenges include harsh environmental conditions, spill recovery, high operating cost, relatively high risk, limited choice of drilling units, international (environmental) laws/regulations etc. The existence of recoverable oil and gas resources have been known...
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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Nous, R.J.M. (author)
The joint venture between Boskalis and VolkerWessels is responsible for installing 70 jacket foundations for the Wikinger offshore wind farm. The critical phase in this installation procedure is lowering a jacket foundation template through the wave zone. This installation phase will induce large dynamic loads on the hoisting wire. Lowering...
master thesis 2015
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De Groote, P.F.N. (author)
The purpose of this thesis is to estimate the required forces for a hydraulic decommissioning cutting tool. The reason for this thesis topic is because of clear regulations and demand according offshore decommissioning. Abandoned offshore structures require to be decommissioned after their lifespan. The low oil prices these days and the pressure...
master thesis 2015
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Chomatas, K. (author)
Navigation in extreme cold conditions, means repeated ice breaking in navigation channels and harbour basins. The broken ice resulting from this repeating procedure, is called ‘’ Brash Ice’’, in opposite to ‘’sea ice’’ which is formed statically in calm water. Just after an ice breaking event, caused by a vessel transit, there is a lot of water...
master thesis 2015
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Koole, M. (author)
The trend in Offshore Engineering is towards exploring in deeper waters and more harsh environments. As a consequence, topsides become larger and heavier. In order to keep up with the demand for more lifting capacity, Heerema announced a New Semi-submersible Crane Vessel (NSCV). This vessel will contain two 10 000mt Tub Mounted Cranes (TMC),...
master thesis 2015
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Voortman, R.L.B. (author)
The costs of wind energy have to be reduced in order to be competitive with conventional methods to generate electricity. The tower costs contribute significantly to the costs of a wind turbine. This thesis aimed to suggest improvements in wind turbine tower design in comparison with industry standards nowadays in order to reduce the costs of...
master thesis 2015
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Bresser, G. (author)
The Ampelmann system consists of a motion compensating Stewart platform and a telescoping connection bridge, a gangway. The gangway creates a large asymmetric load case on top of the Stewart platform. The purpose of this study is to make the A-type operable for larger gangways by investigating the possibilities to reduce the cylinder forces by...
master thesis 2015
Searched for: contributor:"Hoving, J.S. (mentor)"
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