Dredge Contractor ‘Sees’ Under Water and Dredge to a 3D Design

Dredge Contractor ‘Sees’ Under Water and Dredges to a 3D Design

Real-time positioning and 3D visualisation powered by Trimble Marine Construction Software helps deliver one of New Zealand’s most complex remediation projects.

Tackling a Landmark Project in Whakatāne

When NZPGS joined a consortium led by EnviroWaste Services Limited to remediate the contaminated Kopeopeo Canal in Whakatāne, they faced a unique challenge: how to dredge and decontaminate with precision while minimising disruption.

The answer? Advanced positioning and marine construction technologies from SITECH NZ and Trimble.

The Challenge: Precision Below the Surface

The Kopeopeo Canal presented a difficult environment. Traditional dredging methods could not guarantee the accuracy needed for such sensitive remediation work. NZPGS needed:

Accurate real-time positioning to ensure material was removed precisely to design.
3D visualisation of underwater operations to track progress and avoid costly errors.
Efficient workflows to minimise downtime and maximise productivity.

The Solution: SITECH + Trimble Marine Construction

By integrating Trimble’s Marine Construction Software (TMC) with advanced positioning technology, SITECH NZ provided NZPGS with a complete solution:

Real-time 3D visualisation of dredging operations.
Precise underwater guidance to match the 3D design model.
Improved accuracy and efficiency in material removal.

This allowed the team to literally see beneath the water’s surface and work to exact specifications—saving time, reducing rework, and delivering a safer, more controlled remediation process.

The Result: Greater Accuracy, Reduced Risk

With Trimble’s technology, NZPGS successfully navigated one of New Zealand’s most complex dredging projects. The project team could:

Monitor progress in real-time.
Reduce risk of over- or under-dredging.
Ensure environmental and safety compliance.

The ability to visualise the dredging process in 3D not only improved accuracy but also gave stakeholders confidence in the project’s outcomes.

Future of Marine Construction in NZ

This project highlights how SITECH NZ, in partnership with Trimble Marine, is helping New Zealand contractors take on increasingly complex marine and remediation projects. With advanced marine positioning and 3D construction solutions, contractors can achieve greater accuracy, safety, and efficiency—whether it’s dredging, piling, or reclamation.

Ready to see how Trimble Marine solutions can transform your next project?

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