
At Swinoujscie an LNG terminal is being constructed. The 3 kilometre long breakwater required for this terminal is built by a joint venture of Boskalis, Hochtief, Per Aarsleff and Doraco.
The breakwater consists of a steel cofferdam structure with Xbloc concrete armour on a rock core on the outside.
On the main breakwater Xblocs of 5, 2.5 and 1 m3 will be applied. The Xblocs are cast in the port of Swinoujscie.
The Xblocs are transported by barge to the inside of the breakwater and are subsequently placed by hydraulic excavators.
Model testing has been carried out in the laboratory of Delta Marine Consultants in Utrecht, Netherlands.
| Start of casting: | August 2011 |
| Trial placement: | September 2011 |
| Start of placement 1 m3 Xblocs: | September 2011 |
| Start of placement 2.5 m3 Xblocs: | October 2011 |
| Hs: | 4.0 m |
| Length of breakwater: | 3 km |
| Size of Xblocs: | 1, 2.5 and 5 m3 |
| Number of units: | 27,500 |