The Port of Kalundborg decided with a public tender in 2017 to implement the plans to enlarge its port area. The tender was divided into two parts: the deepening and the construction of new quay walls. Wasa Dredging emerged as the victor of the tender for the deepening of the harbour basin and in October 2017 the contract was signed. This was the first project for Wasa Dredging in Denmark.


In March 2018 the project started with the insurvey of the dredge and dumping areas after which the dredging started with the deployment of the backhoe dredger “Optimus”, split-hopper barge “Dana II” and the newly built self-propelled split-hopper barges “Boann” and “Sinann”.


Optimus started the works by dredging a trench at the location of the new quay wall, down to 15 meters below water level. The inner port basin and the turning circle of the new port is dredged to 15 meters below water level, the outer basin is dredged to 11 meters below water level. After the dredging was completed an outsurvey and a bar sweep check was successfully performed to ensure the new depth of the dredging areas. In total a volume of 900 000 m3 of medium to hard moraine clays was dredged, transported and dumped into the appointed reclamation area which was located at some 17 km from the site.


The work was completed in 13 weeks starting in March 2018 and handed over to the client in June 2018.

The numbers:


Dredging depth: -11,00/-15,00 meters


Volume dredged: 900 000 m3

More references


In the end of July 2018 a joint venture consisting of Wasa Dredging and Van Oord Marine Contractors signed two separate contracts regarding a big project in Kokkola Harbour and Fairway.


The Project for Wasa Dredging’s part started in June 2018 as a subcontractor to the main contractor Dragados, the client for the project is Aberdeen Harbour.


Wasa Dredging was awarded this contract as a main contractor in 2016 and the deepening of the southern fairway into Rauma began in the spring of 2016.


Wasa was in May 2016 awarded a contract in the port of Klintehamn in Gotland, Sweden to dredge and re-use limestone from the fairway and harbour basin.


In 2015 Wasa Dredging was awarded the contract of deepening the fairway into Oslo, the capital city of Norway.