Recent projects

Slipway Cradle Concept Engineering

Slipway Cradle Concept Engineering

ONA recently completed a concept cradle design for slipping pilot boats and other craft on an isolated slipway in Australia’s North. The slip cradles were initially designed to be compliant with a specific vessel docking plan which due to the vessel length, necessitated significant support capacity along its keel. To enable smaller boat slipping the […]

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Spread Moored Subsea Operations

Spread Moored Subsea Operations

ONA recently undertook a specialised mooring scope for a marine contractor who was planning spread moored subsea operations. ONA provided mooring and operational support that allowed the contractor to maximise their existing structural and mooring anchor capacities. Using OPTIMOOR, ONA was able to quickly identify environmental limitations for a quasi static mooring basis to determine […]

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Container Stowage Optimisation and Voyage Support

Container Stowage Optimisation and Voyage Support

ONA were requested to support container stacking and stowing diligence for a vessel operator recently. The scope required ONA to undertake container stacking calculations to classification society codes and requirements (BV and DNV) and develop utilisation strategies for the unique cargo particulars. Deviations from approved cargo securing manual and capacities require careful consideration and management […]

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Electric Vessel Propulsion – Tourism

Electric Vessel Propulsion – Tourism

On behalf of a progressive marine tourism provider ONA has been providing significant support in building the foundations for electrically powered tourist vessels in Northern Australia. Consulting and building on our extensive marine design background in low resistance hulls and offshore electric power management system knowledge we have undertaken extensive research and feasibility studies into […]

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DP Assisted WHP Installation

DP Assisted WHP Installation

ONA Consultants were awarded a significant DP technical consulting scope, supporting an innovative engineering company exploring the the benefits of DP assisted installation vessel manoeuvring in close proximity to marine assets. The work involved interfacing with Kongsberg as the various CFD interactions between vessels, thrusters and subsea structures were quantified in  developing a significant DP […]

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Woodside Scarborough – FEED Support

Woodside Scarborough – FEED Support

ONA Consultants were awarded a significant FEED marine assurance scope from Woodside for the Scarborough Project expected for FID late 2021. The award reflects ONA’s significant expertise in understanding and quantifying the marine technical risk with building, integrating, and installing large semi-submersible facilities. https://youtu.be/lv1eTKo9gvQ ONA were fundamental to the successful tow and installation phases of […]

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Woodside DP Risk Engineering

Woodside DP Risk Engineering

Offshore Naval Architects (ONA) provided dynamic positioning risk engineering and support for installation of the 1650 metric ton water handling module for client Woodside on the Woodside-operated Pluto Alpha offshore platform in Australia. The module was fabricated by the MMHE yard in Johor, Malaysia and was picked up by the Heerema Aegir from the quay […]

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JH143 Shipyard Risk Scope – White Rabbit

JH143 Shipyard Risk Scope – White Rabbit

ONA recently provided JH143 Risk Assessment of Echo Yachts, for an underwriter. The scope covered the launch of the luxury motor vessel from the Echo Yachts yard in Henderson WA. ONA was able to draw on our past experience with such shipyard work in combination with our heavy lift and docking capabilities to offer truly […]

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FPSO Positioning and Connect Operability

FPSO Positioning and Connect Operability

ONA Consultants has been contracted by an energy major to undertake marine operations engineering with a view to understand re-connect operability for an FPSO on the North West Shelf, Australia. The work scope included modelling and operability assessments of the FPSO on the connected internal APL turret and mooring system, under the influence of a […]

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FPSO Static Tow and Operability Engineering Scope

FPSO Static Tow and Operability Engineering Scope

ONA Consultants has been contracted by an energy major to undertake position keeping engineering for an FPSO on the North West Shelf, Australia. The work scope included modelling and operability assessments of the FPSO on the connected turret and mooring system, under the influence of a multitude of probable sea states. ONA has developed robust […]

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Greater Enfield Project Tow Consulting

Greater Enfield Project Tow Consulting

ONA were recently completed a tow consulting scope on the Woodside Greater Enfield Project on behalf of TechnipFMC. The scope comprised tow planning, procedures, stability, and tow load path engineering and verification of multiple voyages. Each tow formed part of the mobilisation of equipment and permanent materials from Singapore. Typically marine transportation scopes in the […]

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Nearshore Construction Naval Architectural Support

Nearshore Construction Naval Architectural Support

ONA Consulting were recently awarded naval architectural support scope including stability verification for a nearshore marine contractor. The scope draws on our long experience supporting marine transportation and engineering scopes across Australia. ONA consultants provide a range of engineering and verification support services for marine tow contractors, heavy lift transportation and installation contractors. The scopes […]

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