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. The project was a joint venture between Klintehamn Harbour and Sjöfartsverket. For the project Wasa mobilised the BHD 18000 model dredger “Optimus” along with a landbased EX1200 Hitachi 120 ton excavator. The target depth varied from 6,0 to 7,3 meters depth. Wasa was also to build around 21 000 m2 of new land areas for the port to use as a basis to contruct new harbour areas and quay walls.


Optimus and the split-barges “Miika II” and “Dana II” mobilised from Rauma, Finland to Klintehamn in September 2016 and started working. The first stage was to remove the soft soils, unusable for building, and sail them to the reclamation area at sea. After this came the scope of dredging the extremely hard limestone (up to 45 MPa) located underneath the soft soils. These hard masses was taken to the harbour area where the EX1200 excavator re-used the material in building new land area for the harbour. During the project around 1000 barges were taken to the reclamation areas.


The project was finished in March of 2017.

The numbers:


Softer limestone: 81 000 m3


Hard limestone (up to 45 MPa): 175 000 m3


Land-area built: 21 000 m2

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.


The Port of Kalundborg decided with a public tender in 2017 to implement the plans to enlarge its port area.


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