Improving workability estimates for the offshore wind industry: Estimating the workability of marine operations more accurately using the dynamic response motions of vessels and turbine structures

In recent years, several logistic optimisation models have emerged as powerful tools to assess and optimise the planning, costs, and workability of marine operations. Nevertheless, these models often rely on two underlying assumptions: (1) the significant wave height and peak wave period adequately describe (directional) wave fields, and (2)...

Simulating wave attenuation by an offshore floating solar system

Because the demand for green energy increases rapidly, it is expected that solar and wind energy will dominate future power generation. New in this field is the development of offshore floating solar systems, consisting of multiple interconnected platforms that are covered with PV panels. Besides satisfying the demand for electricity, these...

Decay of bow thruster induced near-bed flow velocities at a vertical quay wall: A field measurement

During berthing operations vessels use their bow thruster(s) to improve their manoeuvrability, making them less dependent on the assistance of tugboats. The jet from a bow thruster reflects on the quay wall. It is directed towards the bottom where it reflects, causing high flow velocities over the bed. This may scour the nearby bed when it is...

Mild-Slope Wave Modelling for Dynamic Mooring Analyses: An exploratory study into an efficient alternative to the wave penetration model

Moored vessels in harbours around the world are affected by waves penetrating into the port basin. Hydraulic conditions can lead to severe vessel motions that influence the (un)loading efficiency and can even lead to the failure of fenders and mooring lines, creating unsafe situations for operating staff and <br/>A DMA is a chain of numerical...

Puerto de Talcahuano: Port expansion design proposal for the port of Talcahuano, situated in the bay of Concepción

The port authority of the Port of Talcahuano has the desire to expand the port. The goal of the expansion is to increase the berth space and attract more vessels, thus increasing their throughput. This report is an advise to the port authority on the possibilities of expanding. Four preliminary port designs aremadewith the requirement of the...

A combination of SWASH and Harberth to compute wave forces on moored ships

Moored vessels are subject to wave forces and moments at different frequencies, which induce motions of the body and can be transferred to the mooring lines and fenders. Under extreme forcing and vessel motions, dangerous line breaking accidents can occur or the ship movements can be simply too large to continue the on/off-loading process,...

Open ports for container vessels: An exploratory study into the possibilities for offshore and exposed container ports

Traditionally, ports are located in areas protected by natural shelter. Shelter is needed for the safe mooring of vessels and for the efficient handling of containers and other cargo. Disadvantage of the areas which provide natural shelter is their limiting depth. Due to the increasingly bigger vessels, dredging in ports became inevitable....

Effectiveness of Floating Breakwaters: Wave attenuating floating structures

From previous engineering projects it turned out that it is difficult to determine the transmitted wave height of floating breakwaters without performing physical models or using numerical models. In this thesis it is investigated which steps should be taken during the preliminary design process in order to predict the effectiveness (wave...

The use of numerical models to determine the response of moored vessels to waves in a complex harbour geometry

A moored vessel can experience large motions when agitated by waves. As a result, mooring lines risk breaking, the ship becomes a dangerously uncontrolled object, but most importantly unloading and loading the ship is made impossible. From an economic perspective, it is thus important to determine vessel motions due to waves at a berth. A...