OceanTec Wave Energy Device Decommissioning

CoreMarine completed the successful decommissioning of the OceanTec Wave Energy device last week.


CoreMarine has been responsible for T&I (Transport & Installation) since the beginning of the project in 2016. We started our collaboration with TECNALIA, OCENTEC and now IDOM. During the initial Installation process in October 2016, CoreMarine was also involved in the ballast system design and operations. Since then we have been involved in all T&I operations including mooring installation with AHV Union Bear and now in the final decommissioning phase.  


The device has been producing renewable wave energy to the grid for 3 winters in one of the most harsh environments in Europe (Bay of Biscay).

Thanks to OceanTec, IDOM and TECNALIA for their confidence and also to CDA for their continued diving and technical support. Our logistics partner, ALTIUS has also been fantastic throughout the project and we thank them for their efforts also.

The device has been retired to Bilbao Port for a new future as part of IDOM and hopefully many more years producing clean energy!


Twin-Turbine Floating Wind Installation

CoreMarine is proud to have assisted the WIP10+ project in the installation of the worlds first twin-turbine floating wind unit.


A consortium of European companies, lead by EnerOcean has designed, fabricated and installed a prototype twin-turbines (the first in the world, and the first floating in Spain). It was successfully installed last week at the PLOCAN test site in the Canaries. CoreMarine has assisted in the T&I execution of the project including survey equipment and personnel for anchor installation and hook up support. 

We would also like to thank the many other companies that have been working during the T&I phase, including TRAMES, REPROSUB and the always good support from PLOCAN the owner of the test site.


The turbine has been operational since last week with very successful results.

Katapult Ocean Partnership

How do you link expontential technology with heavy engineering in the ocean space?

We think collaborating with arguably the world’s best ocean tech start-up accelerator program is a great start. So, we are excited to announce our partnership with Katapult Ocean!


Katapult Ocean is building and investing in great businesses with a positive impact on the oceans. supporting sustainable developement goal #14, life under water. At the core of this is an impact ocean tech accelerator, a spin-off of the successful Katapult Accelerator.

Katapult Ocean is building a global ecosystem of the best organisations, investors and experts to support with mentorship and advice throughout the program. That’s where CoreMarine comes in: we will provide engineering verification and mentorship to these businesses.

Do you need help developing your ocean space innovation?

We’d love to hear from you, whether you have the beginnings of an idea or a fully-fledged concept. Get in touch!

Likewise, Katapult Ocean will provide support to the ocean start-ups within CoreMarine MAST , which is our own internal accelerator. MAST works with very early stage businesses, helping them develop to the next level where they can attract investment by Katapult Ocean and others.

Together, CoreMarine and Katapult Ocean are planning exciting events to drive innovation and engineering in the ocean space to solve some of the ocean's biggest challenges and to find new opportunities with a positive impact on the oceans. Watch this space for updates.

We believe in the power and possibilities of tech combined with heavy engineering to build sustainable ocean economies. We can’t wait to see the results of this exciting partnership!

From L-R: Maren Hjorth Bauer (Katapult Ocean), Sean Van Steel (CoreMarine), Ben Fitzgerald (CoreMarine), Rikke Jørgensen (Katapult Ocean)

From L-R: Maren Hjorth Bauer (Katapult Ocean), Sean Van Steel (CoreMarine), Ben Fitzgerald (CoreMarine), Rikke Jørgensen (Katapult Ocean)

Under goes under!

Ben Fitzgerald (Operations Director) and Sean Van Steel (Engineering Manager) observing the free floating Under structure at dawn

Ben Fitzgerald (Operations Director) and Sean Van Steel (Engineering Manager) observing the free floating Under structure at dawn

Under – the world’s largest and Europe’s first underwater restaurant – has been successfully installed on the seabed near Lindesnes, Norway’s southernmost point. Under is a flagship project for CoreMarine in our drive to transfer technology and expertise from the offshore industry, accelerating the sustainable ocean economy.

After 18 months of planning and construction, the 1,620 tonne concrete structure was floated off its foundation barge in the early hours of Friday 27th July. Heavy lift vessel Uglen connected to slings on the free-floating restaurant, before manoeuvring the structure into place and lowering it onto the foundation blocks. After a full day of careful operations, the restaurant was fully installed and disconnected from Uglen by 20:30. You can see footage of the critical stages below.


CoreMarine developed the installation procedure for this pioneering operation, which was conducted in partnership with Farsund Fortøyningsselskap and Øgrey for our client Lindesnes Havhotel


CoreMarine’s scope included: 

  • Environmental analysis and wave propagation model generation 
  • Installation and stability analysis
  • Structure load-out engineering
  • Heavy-lift engineering
  • Pad eye design-(with Iberian Offshore)
  • Installation operations


“The novelty of this launching operation and the extremely small tolerances we had in lining up exactly with the foundations were our greatest concerns with this operation,” says CoreMarine Engineering Manager, Sean Van Steel. “The restaurant free floated according to plan, and the structure landed well and truly within our centimeter-tight tolerances.”

“We couldn’t be happier with how successful this operation was; one of the smoothest and most successful we’ve developed. This is even more significant given the uniqueness of the structure: we took a land-based civil engineering concept – a stunning Snøhetta-designed restaurant – and turned it into an offshore operation.”

The next steps are to finalize the underwater foundations, and complete the restaurant’s internal fit-out. Under is planned to open in the spring of 2019.

(Please contact us if you wish to use this footage)

Construction of the Under structure

Positioning Under for the float-out operation

Sinking of the foundation barge

Connecting Under to heavy lift vessel Uglen

Preparations for manoeuvering into place over the foundations

Manoeuvering into place over the foundations

Under goes under

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 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.