While the primary purpose of Port Taranaki's main breakwater is to protect the harbour from the open sea, it is also a fully operational facility.
It includes two berths, one which offers a length of 150 metres, and depth 9.5 metres, and is protected by a 200 metre long, 5 metre high wave wall. The berth is multipurpose, and primarily used for coastal bulk traders and offshore support. A special feature of this berth is that it has heavy lift capacity.
The second berth, is 98 metres in lengh and has a depth of 7.5 metres. It has special facilities to cater for the needs of Taranaki's offshore oil and gas operations. These include cutting shed, bulk cement and drilling mud blending equipment, potable water via a 4-inch line and 2000m² of sealed laydown.
Port Taranaki-based fishing vessels also make heavy use of the main breakwater, tying up at other smaller berths along its inner side for offloading and provisioning.