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Marine Dredging

Deepening the seabed for ports, shipyards and coastal facilities.

Service

What is marine dredging?

Marine dredging means deepening and adapting the seabed — its main purpose is to increase water depth. It can be carried out at any coastal facility: ports, shipyards, sea outfall lines and more.

Before work starts, certain permits must be obtained from the authorities by the facility owner. Specialist teams then survey the seabed, and the right equipment is selected based on the data collected.

Dredged material is loaded onto vessels and discharged at the permitted disposal area. The operation continues until the required depth is reached. Dredging is especially needed in port construction, capacity increases at existing facilities, subsea installations and depth-creation projects.

Navalcon pontoon carrying out dredging works

Equipment

A fleet matched to the material and depth

The material to be dredged — mud, sand or rock — is removed or transported using machinery on floating vessels and dredging pumps. The equipment varies with the operation and the type of material on the seabed.

Jack-up bargeSplit bargeCutter suction dredgerBackhoe dredgerLong-reach excavatorPile hammering equipment

Before dredging, we assess

Application stages

How a dredging project runs

01

Survey

The site is examined and the equipment to be used is determined.

02

Mobilisation

Vessels, pontoons and machinery are brought to site once the permits are in place.

03

Bathymetry

The seabed is surveyed to set the reference levels for the work.

04

Dredging

Material is excavated, loaded onto vessels and discharged at the permitted coordinates until the target depth is reached.

05

Demobilisation

Equipment is removed and the site is handed back.

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Planning a marine or coastal project?

Tell us about your site and scope. Our team will get back to you with the right method, equipment and a clear quotation.