The scope of works included the dredging of one million cu m of clay to create Muuga’s access channel, plus another 1.5 million cu m for three large berths. The soil was varying from soft clay to very hard Cambrian clay. There were also areas with a high concentration of boulders. The new coal terminal’s access channel had to be dredged to -17.8 m; two berths had to be dredged to -11 m and the third berth to -17.1 m. Dredged clay was transported to an offshore disposal area close to the island of Aksi. The contract also provided for reclamation of the terminal area, requiring 2.5 million cu m of sand. Two borrow areas were used. Around 750,000 cu m was won from a location near Prangli, an island close to Aksi. The balance was sourced from an area near Naissaar, an island to the west, of Tallinn.

Weather and, in particular, winter ice conditions were a challenge, as was unexploded ordnance.

For a complete project description, download the project data sheet (PDF).