News

4,500 Xblocs to protect new harbour of remote Chatham Islands, New Zealand

Posted on 18 January 2016

dws-xbloc-waitangi-current-wharf-770pxDelta Marine Consultants has signed a new license agreement for an Xbloc project for the Chatham Islands, one of New Zealand’s most remote communities in the Pacific Ocean.

The major island´s harbour, Waitangi Wharf, is ready for an upgrade. The upgrade comprises amongst others a breakwater up to 185 meters long to protect the wharf, and new land for enhanced port operations.

Interlocking blocks - XBloc concrete armour - have been selected as cost effective and proven solution for coastal protection. It is proposed to produce about 4,500 XBlocs at the construction yard on the island.

dws-xbloc-waitangi-wharf-scheme-350px
 Scheme for the new Waitangi Wharf with the breakwater situated at the topside.

Critical lifeline for island
Waitangi Wharf is a critical lifeline for the Chatham Islands, one of New Zealand’s most remote communities. It is in poor structural condition and needs to be replaced within five years.

The wharf is the islands’ only cargo-handling facility for essential supplies, including diesel for the electricity grid and fuel for air services.

The New Zealand Government, through the Department of Internal Affairs and New Zealand Transport Agency, is funding and managing the upgrade of the wharf.

To enable new coastal structures and to improve berthing for vessels, the harbour and surrounding seabed will be dredged over an area of approximately 7,000 m2. The sand will be used for replenishment of Waitangi Beach.

dws-xbloc-waitangi-wharf-production-350px
Preconstruction of the Xbloc on location, in IJmuiden, the Netherlands.

Construction facility
It was estimated that the new breakwater would need about 12-15 tonne of rock. This is hardly available on the main land of New Zealand, let alone on the island itself.

This led to the selection of the XBloc as they can be constructed on location. Near the wharf a special construction yard will created to manufacture the concrete Xbloc armour and other elements of the renewed wharf.

This news item was originally published on the website of XBloc.


Read also on this website
BAM to deliver Xbloc armour units for protection new container terminal Puerto Moin, Costa Rica, 12 June 2015
Xbloc breakwater armour units to protect new LNG-terminal in the port of Mundra, India, 12 February 2015
Agreement on delivery Xbloc armour units for new coastal road Reunion Island, France, 25 August 2014


More information
Delta Marine Consultants-BAM
Gouda, the Netherlands
+31 182 590 610
www.xbloc.com

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