Dredger of the Month: Port of Liepaja’s CSD

Liepaja, Fernao De Magalhaes loading the Marquis de Prie 2. Credit: Bert Visser

DPC looks at how the port of Liepaja, Latvia, with specially equipped cutter suction dredger Fernão de Magalhães, tackles dredging heterogenous material in the Baltic Sea

For projects that comprise a substantial dredging component, making the right choice for equipment to be used is vital for the success of the project.

For many years, making this choice has not been too hard, each type of dredger, such as trailing suction hopper dredgers (TSHDs), cutter suction dredgers (CSDs), backhoe dredgers (BHDs), and grab dredgers (GDs), had their specific field of scope in which they excelled.

But, over the past 15 years, the strict boundaries between the possibilities of application of the different dredger types have faded, mainly due to scaling in size and power, as well as to technical innovations. Mainly suction dredgers have pushed the limits of their possibilities significantly. For example, recently, several TSHDs have been built that are capable to dredge cohesive and sticky material that previously could only be handled by mechanical dredgers.

This is an excerpt of the DPC July edition. To have access to the full article, and more DPC articles, please subscribe here.