Sand from the sea floor, responsibly
Suction dredging of sand and gravel from consented areas, the backbone of our own sand supply.
Stationary and trailing suction dredging
Our vessels are equipped with both stationary and trailing suction dredge equipment for extracting sand and gravel in the marine environment.
The sand we extract supplies our own depots and customers across the building, roading, landscaping, sports turf and equestrian industries, and marine sand for concrete plants in Auckland and the Bay of Plenty.
- Stationary suction dredging
- Trailing suction dredging
- Sand and gravel
- Consented extraction areas
Maintenance dredging
Our dredging vessels also maintain ports, channels and berths. In June 2026 we dredged around 30,000m³ at Channel’s jetty 1 at Marsden Point to restore a 16m design depth.
Our extraction fleet
William Fraser was built for sand extraction. See the full fleet for every vessel.
Extraction done the right way
New Zealanders care about the coast, and so do we. Find out how our extraction is consented, monitored and managed.
Te Ākau Bream Bay Application
Our resource consent application for offshore sand extraction at Bream Bay.
Find out more 02Resource Consenting Process
Why we are consenting, and the information behind our application.
Find out more 03Sand Extraction Operation
A summary of how our sand extraction operation works.
Find out more 04Consent Operations Schedule
Our operating schedule under current consents.
Find out more 05Sustainability and Support
Our commitment to the environment and the communities we work in.
Find out moreSafety and biosecurity
McCallum Bros vessels and maritime personnel operate under a comprehensive and effective Safe Ship Management System, and we hold biosecurity certification for our marine operations.
Talk to us about marine extraction
Tell us what you need and we’ll come back to you with options and a price.
Enquire now