The Rangitoto Channel is one of several passes between the islands of the inner

Hauraki Gulf The Hauraki Gulf / Tīkapa Moana is a coastal feature of the North Island of New Zealand. It has an area of 4000 km2,Waitematā Harbour Waitematā Harbour is the main access by sea to Auckland, New Zealand. For this reason it is often referred to as Auckland Harbour, despite the fact that it is one of two harbours adjoining the city. The harbour forms the northern and easter ...

to the east of

Auckland Auckland (pronounced ) ( mi, Tāmaki Makaurau) is a large metropolitan city in the North Island of New Zealand. The List of New Zealand urban areas by population, most populous urban area in the country and the List of cities in Oceania by po ...

in New Zealand. The channel is an important stretch of water as it is the only deep water approach to Auckland Port for large ships such as container cargo ships and passenger cruise liners.Land Information New Zealand Marine chart NZ532 The channel separates the

volcanic A volcano is a rupture in the crust of a planetary-mass object, such as Earth, that allows hot lava, volcanic ash, and gases to escape from a magma chamber below the surface. On Earth, volcanoes are most often found where tectonic plates a ...

cone of

Rangitoto Island Rangitoto Island is a volcanic island in the Hauraki Gulf near Auckland, New Zealand. The wide island is a symmetrical shield volcano cone, reaching a height of . Rangitoto is the youngest and largest of the approximately 50 volcanoes of the Au ...

from the

East Coast Bays East Coast Bays is a string of small suburbs that form the northernmost part of the North Shore, part of the contiguous Auckland metropolitan area in New Zealand. The suburbs line the north-east coast of the city along the shore of the Haurak ...

of the North Shore, to the north of the Waitemata's entrance. The channel was last dredged from a depth of 11.2m to 12.5m in a two-stage process in 2004. The first stage involved the mechanical excavation of hard rock. Blasting was not required. This was followed by the removal of softer material. All dredged material was used in the reclamation at Fergusson wharf.Rock removed from shipping laneRangitoto Shipping Lane Dredging & Wharf Reclamation

References

Hauraki Gulf Straits of New Zealand Landforms of the Auckland Region {{Auckland-geo-stub