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ONA Marine

Marine Services in Perth

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Case Studies

Case Studies and Insights

Here are some case studies which showcase recent projects successfully undertaken by the team at ONA Marine.

December 29, 2023

Application of Deadweight Anchors

Some anchors rely heavily on their weight to provide ground resistance or anchoring capacity. These ancho
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Application of Deadweight Anchors

Some anchors rely heavily on their weight to provide ground resistance or anchoring capacity. These anchors while maybe considered dumb, are generally very heavily uses anchoring vessels across a multitude of soil and ground conditions. Generally, some level of holding is guaranteed, and this is fundamental to vessel moored operability and assurance especially for temporary..Read Article >

October 28, 2023

Clump Weight Insights and Considerations

Mooring design and the selection of clump weight materials, size and form should always be undertaken...
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Clump Weight Insights and Considerations

Mooring Clump Weights General Clump weights are the simplest of omnidirectional and directional anchoring solutions. They are not efficient however offer some vertical capacity preventing uplift, therefore can be conveniently deployed to prevent both lateral and vertical loads combined. They can also be used to improve mooring systems by supplementing anchor catenary weights where additional..Read Article >

June 10, 2023

RPEQ Mooring Design, Supply and Installation Approval

The operational and legal risk associated with moorings can be substantially mitigated with ....
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The operational and legal risk associated with moorings can be substantially mitigated with sign off from RPEQ Engineers. Iit is good to see some regulatory authorities on the East Coast requiring sign-off of moorings from RPEQ engineers. GBMPA requires RPEQ sign off on Great Barrier Reef moorings and the Gold Coast Water Authority (GCWA) for..Read Article >

January 13, 2022

Mooring Maintenance Program – ATSB Learnings

“Furthermore, the managers of the port had not implemented an effective inspection and maintenance....
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Mooring Maintenance Program – ATSB Learnings

Last week marks the 10-year anniversary of the foundering of the ship MV Tycoon, after failure of its mooring system, at Flying Fish Cove, Christmas Island. The incident highlights the need to not only inspect but also to manage mooring system integrity. ATSB findings include “Furthermore, the managers of the port had not implemented an..Read Article >

December 20, 2021

Maintaining the Mooring Integrity Baseline

The baseline in mooring asset integrity is the starting point to maintaining visibility on the ...
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The baseline in mooring asset integrity is the starting point to maintaining visibility on the condition and life expectancy of the mooring system. Loss of baseline is an emerging trend in large terminal moorings in the region. Typical contributors include lack of funding, lack of competent oversight, deficient maintenance programs and inadequate maintenance. The impacts..Read Article >

July 16, 2021

Used Drag Embedment Anchors – Risks

The risk of using second-hand or used anchors should be understood by unsuspecting end users and ....
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Used Drag Embedment Anchors – Risks

Used Drag Embedment Anchors in Australia – The Risks The risk of using second-hand or used anchors should be understood by unsuspecting end users and operators. Since 2010 there has been many mega projects involving the use of large drag embedment anchors in Australia. These projects have finished and as most of the anchors were..Read Article >

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Mooring Systems

  • AtoN Buoy Moorings Systems
  • Environmentally Friendly Moorings
  • Single Point Admiralty Moorings
  • Tanker and Terminal Moorings
  • Scientific and Research Moorings
  • National Parks and Recreational Moorings

Mooring Products

  • Chain Clamps and Subsea Connectors
  • Subsea Diver and ROV Chain Inspection Gauges
  • Mooring Buoys and Quick Release Hooks
  • Railway Wheel Anchors and Hub Connectors
  • Hand and Auger Driven Screw Anchors
  • Subsea Clump Weights and Deadweight Anchors
  • Platipus (PDEA) Marine Anchors
  • Subsea Springer and Surface Buoys
  • Passive Earth Plates and Connections

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