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More Projects & Case Studies

Underwater Inspection & Hydrus AUV 3D Mapping | CMG Great Keppel Island

Middle Island Underwater Observatory Inspection Client: DEMEXDate: September 2025 Commercial Marine Group was engaged by

20253D ScanningDEMEXHydrus AUVProjectsUnderwater Inspections
Port North Common User Berth Deconstruction and Removal Works

Client: Brady Marine and Civil | Port of Brisbane Commercial Marine Group was engaged by

Brady Marine & CivilBrisbane PortDecommissioningProjects

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Palm Beach West Boat Ramp Redevelopment | Commercial Diving & Marine Infrastructure Works WA

Broco CuttingPile RemediationPrecast Concrete InstallationScour ProtectionUnderwater Inspections

Commercial Marine Group supported Jetty and Marine Constructions on the Palm Beach West Boat Ramp Redevelopment, delivering specialist underwater construction works for a public boating upgrade in Rockingham, Western Australia.

The project formed part of a broader upgrade to improve recreational boating access, launch and retrieval functionality, jetty infrastructure and long-term asset performance for the Rockingham boating community.

Working within a coastal marine environment, CMG supported key works below the waterline to help prepare, stabilise and protect the asset.

Scope of Works

  • Initial seabed survey and underwater site verification
  • Pile installation support in accordance with project plans
  • Denso pile wrapping and shielding
  • Geofabric installation
  • Bedrock, armour rock and underwater stone placement
  • Steel framework installation
  • Bluemetal installation and screeding
  • Jack-leg removal using Broco underwater cutting
  • Precast concrete slab and panel installation to level
  • Commercial diving support across underwater construction activities

At Palm Beach West, CMG’s role focused on underwater works that support durability, stability, and long-term performance, including pile protection, seabed preparation, scour protection, underwater cutting, and accurate precast concrete installation.

These works required precise sequencing, experienced commercial diving crews, safe underwater construction methods and close coordination with Jetty and Marine Constructions.

The project highlights CMG’s ability to support principal contractors and government-funded marine infrastructure projects with specialist capability across commercial diving, underwater construction, pile protection, scour protection and marine asset delivery.

From seabed survey to final concrete panel installation, CMG helped deliver the below-waterline construction detail needed to support a safer, stronger, and more functional recreational boating facility for the Rockingham community.

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