They said sufficiently large armour rock required to provide protection ... and they have chosen to go with two layers of concrete armour units. The tetrapods would be placed in a double layer ...

A contract to place 2,000 concrete armour units along the breakwater has been awarded. A contract for the job of placing 2,000 concrete armour units, or hanbars, along the ocean side of the ...

Savills National Auctions The fort is reinforced by concrete and its seaward side is fitted out with 12-inches of armour designed to withstand gunfire from heavy naval units. Savills National ...

As part of the works, existing concrete armour units were removed from the sea and stored in a separate area within the site. "However, it was recognised that these armour units could be put to ...