Boskalis Nordic Today No.02/2018-2019

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Terramare is responsible for the construction of an expansion of the D section of Mussalo Harbour, in Kotka, Finland, for the use of a UPM pulp terminal. The contract consists of a 220 metres long retaining quay wall, a 620 metres long breakwater and a deepening of an extensive harbour basin to a minimum depth of −17.5 metres.

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carried on schedule during the autumn. Dredging of the site is continuing, and it is estimated that the dredged material will amount in total to around 500,000 m 3 . The harbour basin will be deepened to a minimum depth of −17.5 metres. Terramare Site Manager Reijo Kulta- lahti is very satisfied with the implementa- tion of the varied project. “The D-section expansion is also a sig- nificant project for Terramare in terms of its size. It gives us the opportunity to utilise all of the areas of Terramare’s core expertise, such as dredging, underwater dredging and blasting, seaward rock filling, slipform casting and quay construction,” says Kulta- lahti. “The scope of the project, the dredging depth and the rocky, hard sea bottom have also required powerful equipment, for which Terramare’s largest drill barge Playmate and the parent company’s huge backhoe dredger Nordic Giant, transport-

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MASSIVE DREDGING AND HARD BEDROCK REQUIRE high-performance equipment. Terramare personnel monitor the work of the powerful backhoe dredger Nordic Giant. THE HEAVY-DUTY BACKHOE DREDGER NORDIC GIANT was transported to the Mussalo site from Dover, England. Pictured alongside the dredger is the 60-metre barge Terra 1. ARTIST’S IMPRESSION OF THE EXPANDING HARBOUR AREA, to be used for UPM’s new pulp terminal. A) Pulp terminal and field, B) 220-metre quay, C) 620-metre breakwater. IN THE EXPANSION OF THE D-SECTION HARBOUR BASIN, a total of 240,000 m 3 of rock was recovered during underwater drilling and blasting, which was carried out by the drill barge Playmate, pictured in the foreground.

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