Enhanced Dead Weight Anchor Clump weights (Dead Weight Anchors) used in mooring design are known to be large, heavy by design and often requiring prohibitively large vessels with cranes and A-frame to enable installation. Often on the plus side they also work Omni directionally and failure is gradual through changes of position due to overloading..Read Article >
At ONA Marine our spar buoy designs are underpinned by the most robust in-house dynamic analysis. The analysis is integral with the design process and ensures our designs remain conservative, yet meet our client’s specific technical requirements which may include consideration of hull accelerations, dynamic line affects and green water slamming. In the case of..Read Article >
ONA Marine, for the Cardno Maritime Team took the lead on the re-design and refurbishment of terminal tug moorings in North Queensland. The cope included investigation, installation scoping, specification and implementation of best practice mooring standards. The moorings had previously been installed and inspected by various marine contractors yet had a history of ongoing failures…Read Article >
ONA were recently contracted to scope and oversee diving operations including measuring and establishing the integrity of mooring chain components in North Queensland. The moorings had suffered a history of problems commencing since installation using second hand equipment. Using best practice mooring integrity and inspection approaches ONA were able to assist our client baseline and..Read Article >
ONA Marine has just received a new shipment of 400kg train wheels suitable for use as mooring anchors on inshore moorings. The wheels are constructed of high tensile hardened steel ensuring a long subsea life and minimal corrosion. Contact us for a quote or for a more comprehensive mooring solution.
The Marine Equipment Guidelines (MEG4) by OCIMF now includes revised terms and definitions which are pertinent to the way the guidelines are interpreted. These terms are quoted as presented on the OCIMF website (www.ocimf.org) and are shown below: Ship Design Minimum Breaking Load – “The minimum breaking load of new, dry mooring lines for which..Read Article >
ONA Marine have designed and supported fabrication of 4 x 20Te Clump Weight Baskets. These baskets are designed to take either 4x5Te or 2 x 10Te concrete clump weight opening up flexibility and lowering installation costs. The clump weights will be used to moor spar navigation buoys in approximately 20m of water. The steel baskets..Read Article >
ONA were recently awarded design and fabrication support for 4 x 16.5m steel navigation buoys for use at an offshore marine terminal in Western Australia. The buoys will be installed by an installation contractor and moored in depths of 20-21m using clump weights. Each buoy is fitted with a flashing solar Sealite type lights and..Read Article >