CoreMarine delivers moonpool deflector for DeepOcean

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CoreMarine has designed and delivered a moonpool deflector for DeepOcean Ghana to be utilised on the multi-purpose installation vessel – Polar Onyx.

The scope included:

  • Hydrodynamic riser analysis to define loads for the deflector
  • Concept design
  • Structural analysis using finite element analysis (FEA)
  • Fabrication drawings
  • Procurement of deflector

CoreMarine contracted CFS Offshore Engineering in the UK to complete the fabrication of the deflector.


This fast-tracked scope for DeepOcean was delivered on-time and on budget. This project demonstrates CoreMarine’s commitment to delivering complete, SMART ocean solutions to the offshore industries, from hydrodynamic analysis to structural design and fabrication/procurement management.

First Ocean Associates & CoreMarine Sign Reciprocal Frame Agreement

First Ocean Associates and CoreMarine have entered into a reciprocal frame agreement for project support, execution and tendering.

The agreement combines the engineering, analysis and personnel services of CoreMarine with the offshore construction, installation and personnel services of First Ocean Associates.

Together, they will target offshore projects within O&G, renewables, but more strategically in emerging ocean industry markets, with the aim of realizing full turnkey marine solutions to clients worldwide.  

We are extremely excited by this agreement! Cooperation is a big part of the culture at CoreMarine and together with First Ocean Associates we can offer complete solutions to both our clients. We look forward to future, collaborative projects with First Ocean Associates
— Øyvind Johnsen, CoreMarine Director

Both companies have a heavy emphasis on technology development and as such they will also align some of their specific marine technology developments!

First Ocean’s value creation for clients is fundamentally rooted in a strong collaboration of best in class specialists supporting the delivery of unmatchable client service. This newly established, formal agreement with CoreMarine is a prime example of a cooperation which will elevate First Ocean’s high-quality service offering.
— Jason Bayne, Managing Partner - First Ocean Associates

First Ocean Associates is a specialized marine contracting and consultancy company, focusing on light construction, installation, decommissioning and client representation in the offshore segments of the oil & gas and renewable industries worldwide.

First Ocean combine vast offshore experience with key project execution experience to provide complete offshore construction and installation packages.

First Ocean recently executed the PT Amman tailings pipeline replacement project in Indonesia.


MAST- Marine And Subsea Technologies

As part of our strategy to drive innovation in the ocean economy, we are amazingly excited to give you a sneak peek at something we have been working on - MAST!



MAST – Marine and Subsea Technologies – is CoreMarine’s internal incubator. Through MAST we support new concepts in the ocean space with our technical knowledge; transferring our expertise in offshore engineering to develop emerging ocean economies.

We aim to support founders to validate and realise their early-stage concepts, helping them reach the next level where they can attract further exposure and investment.

MAST is currently supporting 4 concepts:

We believe in small ideas with big potential
  • Wave-powered desalination
  • Floating wind power solution
  • Large-scale offshore aquaculture
  • Marine structure launch technology


We will be officially launching MAST and these ground-breaking concepts at an event in Oslo in the coming months. Stay tuned for more details – we look forward to seeing you there!

CoreMarine develops Transport Tracker

During 2016 wild storms lashed the Bay of Biscay, causing multiple barges to snap their tow bridles. The barges eventually washed ashore some days later, luckily with their loads still intact.

Was the barge safe to continue the journey with its sensitive cargo? Was the seafastening still secure? What motions and load had it weathered on its unplanned detour? The only way to know for the first two points was to perform a site inspection on the barge and cargo. The final one no one would know.

Enter CoreMarine’s Transport Tracker, a system we have been developing where by we can monitor the real time movements of the barge.

The Transport Tracker allows owners to monitor the real-time location, speed and motions of their asset, including wind and wave conditions. Data is presented in a user-friendly dashboard which customers access themselves. The system provides up-to-date reporting without the need for an onsite overseer, removing the risk of human error. It ensures data is still received when an asset is adrift, and can even aid in the recovery of a lost vessel.

The Transport Tracker fills a market niche for owners who need to follow their transport and ensure it has not experienced motions or accelerations beyond the design limits, but who don’t require the highly sensitive, expensive systems currently available.

Having implemented the system on multiple transports during 2017 and 2018 with our partners Iberian Offshore, CoreMarine is working to develop the Transport Tracker further. Do you want a reliable, cost-effective way to monitor your vessel, transport and cargo? Check out the prototype interface, and get in touch!


 CoreMarine Transport Tracker in action (White box to the top right)

CoreMarine Transport Tracker in action (White box to the top right)

CoreMarine wins HARSH LAB buoy T&I contract

San Sebastián, Spain: CoreMarine has been awarded the contract for the procurement, transportation and installation (T&I) of the HARSH LAB research buoy in the bimep offshore test facility in Northern Spain.

What is HARSH LAB?

HARSH LAB v1.0 is the first prototype of a larger and more complex lab, which enables testing of new materials and solutions against corrosion, ageing and fouling in real and monitored offshore conditions. It also enables the evaluation of standardised probes and components in a real offshore environment, both in the splash and immersion zones. In this offshore lab up to 125 samples can be tested in the splash zone, and 600 in the immersion zone.

HARSH LAB is a floating offshore laboratory. It will facilitate both hostile environment testing of equipment and subsystem components, as well as functioning as a training  and qualification centre for offshore research teams. 

CoreMarine's scope of work will be performed in collaboration with Bilbao-based Vicinay and Tecnalia. It includes all installation and operational engineering, procurement, anchor handling vessel (AHT) chartering and offshore operations

The project is planned to be executed in two stages: HARSH LAB v1.0 (summer 2018) and HARSH LAB v2.0 (summer 2019). 

This is a key strategic project for CoreMarine as we push further into emerging ocean industries.

 Image credit:  Cluster de Energía

Image credit: Cluster de Energía

CoreMarine signs frame agreement with Orca Subsea

CoreMarine and Orca Subsea have partnered to combine the engineering and analytical capabilities of CoreMarine with the logistics and project support expertise of Orca Subsea.

The partnership between the companies enables a novel approach to logistical and engineering support. Together, CoreMarine and Orca Subsea can offer clients full mobilisation support from engineering design through the procurement process.

"Through this partnership we look forward to providing a more holistic service, delivering both the engineering as well as the logistics and support needed to take projects to the next level," says Ben Fitzgerald, CoreMarine Operations Director. "We can provide management of entire work packages within our combined areas of expertise."


"The combination of logistics and engineering skills purely for mobilisation support is an exciting and new approach for the industry," says Callum Masson, Commercial Director at Orca Subsea. "It will provide clients with the knowledge that their mobilisation will be delivered on-time and within budget by an experienced team."

See the CoreMarine and Orca Subsea Mobilisation Support Joint Competency Statement to learn more about the partnership. 

About the partners


CoreMarine was founded by a collective of subsea and marine engineers intent on developing technologies and efficient solutions for the Blue Economy. Our experience is from the oil and gas industry but we ensure that our services and competencies are directly transferable to other marine industries.
CoreMarine has a presence in both Norway and Spain and actively targets the marine industries in both regions.

Orca Subsea

The company was founded on a simple principle, we supply class leading expertise and services at a highly competitive rate, with the back office support you would expect from a first tier contractor.
We provide a range of support and engineering services specifically tailored to diving and subsea contractors.
Orca’s management team comprises of more than 70 years cumulative diving (air saturation, hyperbaric welding, system manufacture, system commissioning) and subsea construction experience covering the North Sea, Middle East, Far East, Brazil, GOM and West Africa.


Developing a new approach to floating offshore wind mooring design and analysis

San Sebastián, Spain: An innovative new method for estimating second order motions could change the way the floating offshore wind industry approaches mooring design. This is the key finding of a new paper co-authored by CoreMarine hydrodynamics expert Carlos Lopez-Pavon.

 The paper was published in Renewable Energy journal together with experts from the University of Sao Paolo and Univseristy of Madrid.  

Titled 'Slow-drift of a floating wind turbine: An assessment of frequency-domain methods based on model tests', the paper examines the correlation between model testing of these second order motions and numerical analysis methods.

 Floating offshore wind case study analysis model

Floating offshore wind case study analysis model

Slow drift forces can cause significant loading to the mooring systems of a floating wind turbine. However, these forces are difficult to accurately estimate in numerical analysis software. This lack of accurate modelling results in a tendency among engineers to over-design mooring systems to reduce the risk of failure, resulting in unnecessary extra cost. 

Current modeling and analysis methods require significant computational power and time. In the paper, Lopez-Pavon and the team applied several different numerical analysis methods to hydrodynamic models to calculate slow drift forces. They found the appropriate application of these methods can estimate forces more efficiently and without significant loss of accuracy than current methods allow. 

This expertise allows CoreMarine to continue working at the cutting edge of mooring system design and analysis, offering our clients more efficient, robust engineering. 

 Floating offshore wind case study model test

Floating offshore wind case study model test

CoreMarine has a growing focus on floating offshore wind turbines as the industry pushes further from land. Deep coastal waters around significant sections of the US, Japan and parts of Europe require floating solutions in order for offshore wind to be feasible. Successful full-scale prototypes have recently been tested in these markets. Exciting times!

CoreMarine & Under - The Worlds Largest Underwater Restaurant

Oslo, Norway: Europe's first underwater restaurant. A challenging installation on Norway's southern coastline. A monolithic structure made from environmentally-sensitive materials, merging into its rocky surrounds, forming the foundation for a marine life research center. As hydrodynamic and installation engineers dedicated to furthering the blue economy, the opportunity to work with renowned architecture firm Snøhetta and their latest project, Under, is the chance of a lifetime.

This project epitomises the aim of CoreMarine to transfer technology and knowledge from the oil and gas sector into emerging ocean industries.
— Ben Fitzgerald, CoreMarine AS

CoreMarine has partnered with FFS and Einar Øgrey to form SubMar Group, which as a Joint Venture will execute environmental analysis, transport and installation for this unique project. The restaurant will be situated at Båly, a small town near Norway's southern-most point. Project owners Gaute and Stig Ubostad own and operate the Lindesnes Hav Hotel adjacent to the restaurant. Work is expected to be completed and the restaurant opened in early 2019.

The project poses numerous technical challenges all constrained by a very tight budget for the size of the project.

"In oil and gas projects we're used to seeing bigger budgets for T&I [transport and installation] projects like this," explains Ben Fitzgerald, Project Manager for Marine Operations. "We have to keep operations as efficient as possible while not risking the integrity of the structure".

Fitzgerald, who used to work in the oil and gas industry, also said that while many other ocean installation projects choose function over form, it is the form and design of this structure that takes precedence over any functional issues. He explains: "the restaurant doesn't even float horizontally, hence why we have to use a HLV [Heavy Lift Vessel] to maneuver it into position. If this was an O&G project, we would just change the design".

 Positioning the restaurant with the Heavy Lift Vessel 

Positioning the restaurant with the Heavy Lift Vessel 

The restaurant will be constructed entirely on a barge and then towed into position. Installation operations will then follow with barge submersion, floating off the restaurant and placing the structure into position with the help of a Heavy Lift Vessel.

    Technical details of the restaurant include:

    • Installation Depth: 5.5m
    • Weight: 1640 tonnes
    • Wall thickness: 500mm reinforced concrete
    • Panoramic Window: 11m long, 42cm thick
    • Capacity: approx. 100 guests

    In addition to the installation work, SubMar has performed wave propagation and wave loading analysis for the structure. This analysis covers both structural considerations for the restaurant structure, while also providing an important tool for the marine research project that will co-exist with the restaurant.  

     Unstructured mesh around restaurant window used for CFD analysis. 

    Unstructured mesh around restaurant window used for CFD analysis. 

    Developed by leading Nibio marine biologist Trond Rafoss, the structure will facilitate research on fish behavior and the surrounding marine ecosystem. The analysis performed by SubMar will allow the flow profiles and current speeds at various depths to be studied and the seabed conditions optimsed to ensure marine life thrives in close proximity to the restaurant's statement viewing window. Discrete lighting will ensure guests are able to see out into the depths. Over time, mussels will take over the outer walls, forming an artificial reef which filters the water and attracts more marine life.

    This restaurant may only be the start. There are plans for further developments of underwater spaces and joint marine research projects internationally.

    "We see a future where underwater spaces that co-exist harmoniously with the surrounding ocean environment are common place and accessible for all to enjoy," says Fitzgerald.

    Under has already captured the attention of global media outlets including CNN, Time and Business Insider. Local Norwegian media including NRK, Aftenposten and DagensNæringsliv have also covered the project. 


    Analysis consultancy contract with DeepOcean Norway

     Installation vessel-  Edda Freya   Picture: Courtesy of DeepOcean

    Installation vessel- Edda Freya

    Picture: Courtesy of DeepOcean

    Oslo, Norway: CoreMarine has delivered a feasibility study report to DeepOcean Norway, covering the retrieval and deployment of large 280 tonne subsea modules using their state-of-the-art vessel Edda Freya.

    CoreMarine worked alongside DeepOcean's Haugesund engineering team to design and develop a module handling arrangement. The team was tasked with pushing the boundaries on module handling in rough sea states. Working in more challenging sea states in turn demands a greater level of control over lifting operations, limiting uncontrolled contact between the module and vessel. 

    Our scope included assessing the vessel motions and motion models, the implementation of model test hydrodynamics into analysis, and performing module lifting and handling analysis in air and through the water column. CoreMarine's specialization in marine and installation analysis enabled DeepOcean's engineers to develop a system that provides a feasible, robust and repeatable operation.  

    The report was the final study delivered under a services contract between CoreMarine and DeepOcean. 

    Core Marine contributed with excellent competency and analysis capacity in this study. They represented a perfect match and supplement to our own engineering team.
    — Deep Ocean Engineering Manager