Depending on its size and installed power, a Cutter Suction Dredger is capable of cutting a wide range of soil types. Although precise and relatively efficient, a CSD can spill significantly. The authors propose a preliminary model which describes spillage due to centrifugal advection.

For several decades, the preferred solution for isolating dredging pumps within a vessel has been double-walled pump housing. To bypass this housing type’s intrinsic problems, Damen formulated an alternative.

By viewing routine processes and situations through a continuous lens of safety, individuals can help make operational processes on water or land safer. Eight solutions nominated for IADC’s Safety Award demonstrate the benefit of this approach.

Externalities traditionally fall beyond the scope of contractors, leading to stakeholder value creation and corporate value creation being viewed as separate concepts. The time has come to internalise externalities as a force of corporate value creation.

Mark van Koningsveld’s quest for a sustainable dredging industry takes to the front of the classroom as he begins his new role as professor of Ports & Waterways at TU Delft.

A recurring situation observed during the course of a project: the same issues which arise are experienced differently by different parties. A commission was founded to determine the reason and if possible, propose a solution.

With five possible flow regimes to choose from for slurry transport, selecting just one can require consideration. Fortunately, one of these regimes has a simple criterion: a ratio of the particle diameter to the pipe diameter.

IADC’s Young Author Award winner François De Keuleneer and co-authors Joris de Vroom and Arjan Mol discuss the Workability Tool which ensures captains of specialised vessels can make informed decisions to dredge during favourable wave conditions.

A newly appointed Professor Emeritus at TU Delft and former project manager at the Port of Rotterdam Authority, Tiedo Vellinga discusses his role as a bridge between academia and practice and its impact on the direction of port development.

Safe navigation through ports and waterways is determined by the space available under a ship's keel, but a seabed of fluid mud can get in the way.

A one-dimensionalhorizontal modelling tool which accurately predicts the overflow of sediments and bed layer distribution inside the hopper of a Trailing Suction Hopper Dredger is introduced.

The International Association of Ports and Harbors’s Patrick Verhoeven discusses the major topics facing the world’s ports as they prepare for the future as well as ways ports can adapt to the ever-growing scale increase of ships.

A paradigm shift is being increasingly embraced within the dredging industry. The traditional engineering approach is becoming a holistic approach in which the ecosystem is leading and values for people, profit and planet are integrated in an interdisciplinary manner.

Dredging activities often result in the suspension of sediment into the water column in the vicinity of the activity. Sediment release to the aquatic environment and the effects of this release are often the prime environmental concern associated with dredging.

Formulated by employees of Jan De Nul Group, the solution which won the Safety Award 2017 upgraded each facet of the pipeline transportation process, including from the activities performed in storage facilities as well as while travelling to faraway project locations.

The growing awareness of the need for diversified energy sources has collided with the maritime industry. Research initiative JOULES was created to assess the viability of a vessel being 100 per cent green by increasing efficiency and reducing emissions.

An ecosystem services assessment of Port Botany’s expansion identifies the project’s economic, environmental and socio-economic impacts for a universal stakeholder guide which ensures sustainable development.

Safety is the number one priority during dredging operations and IADC’s Safety Award aims to promote awareness through innovation. Thirteen nominations are in the running to receive the 2017 Award.

The continuing surge in vessel sizes is putting increased pressure on port authorities worldwide. Experts recount the implementation of innovative modelling for maintaining channel depths at the ports of Brisbane and Geelong, Australia.

To show the success of polymer use in highly contaminated areas, two recent projects are presented: at Port-La-Forêt harbour in La Forêt-Fouesnant, France and at the Kishon River seven kilometres downstream from Haifa, Israel.

Randle Reef at Hamilton Harbour, an Area of Concern (AOC), is the largest site in Canada contaminated with Polycyclic Aromatic Hydrocarbons (PAHs). A collaboration of municipal and federal entities is working on remediation measures.

The Port-La Nouvelle harbour, located in an inlet between Bages-Sigean lagoon and the Mediterranean coast is home to complex hydrodynamics. An innovative package of five interacting hydro-sedimentary numerical models was developed to assess a port expansion project in the area.

One in five fatal accidents occur in construction and a high percentage of it involves a man on the ground. This article explains how companies can significantly reduce the number of potential accidents on the construction site by implementing strict safety protocols; separating pedestrians and machinery on the site; and what employees can do to maintain a safe working environment.

ReefGuard, a mobile coral breeding facility provides a highly controlled environment to aid in integrating the breeding and outplanting of corals. This article gives a detailed look into how proven small-scale coral breeding techniques can be scaled-up and applied in practice to promote environmental gain around marine infrastructure projects.

Variations are essential in dredging contracts and they have the potential to generate extra costs and pose significant delay to projects. So, what is the best way to go about reaching a fair valuation in variations in dredging contracts?

The sediments in Valdemarsviken fjord in Sweden were contaminated with chromium from the discharge of untreated wastewater from tannery operations decades ago. The contaminated sediments were dredged, dewatered, solidified and placed as a engineered fill in a nearshore area.

An analytical method that was developed and applied to identify the optimal channel layout and dredging depth for safe navigation in the Mearim Port concept in Brazil.

GeoSea, member of the DEME Group won the IADC Safety Award 2016 for its "Enhanced muster station" aboard the jack-up vessel, Neptune. The DEME Group continues to invest heavily in innovative ideas and initiatives regarding safety that includes the "CHILD5" campaign.

The IADC Safety Award was established to encourage the development of safety skills and safety awareness in the industry. The eight nominations of the IADC Safety Award 2016 highlight innovative ideas and diligence regarding safety shown by companies in the dredging industry.

In 2006, FIDIC published a specialised contract for dredging and reclamation activities – the FIDIC Form of Contract for Dredging and Reclamation Works. Ten years later, the second edition of this book has been released with updates to better reflect actual practice and to increase usage of the book.

Maintenance dredging is required in many estuaries worldwide to provide access to ports and inland waterways. A newly developed dredging module is able to capture the two fundamental processes necessary to model the long-term impacts of dredging on turbidity.

Building with Nature is an innovative approach that combines natural processes with innovative engineering methods to realise sustainable projects. Permeable dams are being utilised as part of a Building with Nature solution to help restore the eroding mangrove-mud coast of the Demak district in central Java, Indonesia.

Underwater sound from anthropogenic sources and its potential adverse effects on the marine environment is a topic of much global interest. This article gives an overview of known sound source levels for various dredging equipment and activities and describes a method used to extrapolate source levels.

Dredging works in the Juliana Canal in the Netherlands is currently being carried out and as part of the widening works, a new watertight layer has to be constructed. The contractor has decided on utilising a new and innovative watertight bentonite mixture, LuXeal, to prevent water leakages in the surrounding areas