Anchors Aweigh in Fishfarms with the Scottish Aquaculture Innovation Centre
June 12, 2019 - A consortium of engineering experts in Scotland is developing an innovative new anchoring technology for the aquaculture industry which could enhance the sector’s environmental impact and support its ambitions for long-term sustainable growth.
Sustainable Marine Energy Ltd, the tidal energy technology specialist; the University of Dundee; marine equipment supplier, Gael Force Group; and the Scottish Aquaculture Innovation Centre (SAIC) are exploring the development of a ‘groutless’ anchoring approach, derived from techniques currently used in highly energetic marine energy sites.
The technology could significantly support the aquaculture industry in finding ways to anchor farms in new locations. While concrete or steel anchors are suitable for existing sites, the technology will enhance the options available for high-energy locations, as well as those further from the shore, with solid rock on the seabed.
Focussed on reducing the cost, weight, and environmental impact of anchoring, the new approach will use much lighter anchors which form a mechanical ground lock without the need for resin or grout. The reduction in weight allows operators to use more modestly-sized, readily available vessels for deployment.
Using a remotely-operated drilling rig positioned from a workboat also enables operators to be more precise with installation in deep-water, high-energy sites. The use of low-noise rotational drilling would minimise disturbance to the marine ecosystem and damage to the seabed, while the anchors would be fully removable and potentially re-usable.
Andy Hunt, Chief Engineer for Anchoring and Connectivity at Sustainable Marine Energy, said: “For some time we have seen applications in other sectors that would benefit from adaptations to our rock anchoring technology. For us, this project brings together a very strong Scottish team of project partners with the appropriate skill set and experience to develop the right rock anchoring solution for the aquaculture market. Together, we can quickly begin to unlock the sector’s latent potential, by opening up areas hitherto unsuitable for aquaculture farms.”
Michael Brown, Reader at the University of Dundee’s Geotechnical Engineering Research Group, commented: “This type of anchor technology allows deployment in more energetic environments and in deeper water, with increased confidence with respect to performance on solid rock. The challenge from an engineering perspective is to develop an anchor that is efficient, easy to design and works in variety of rock types and rock mass conditions. While it is easy to design a heavy and expensive rock anchor that works well in all scenarios, we need to refine the anchoring system specifically for aquaculture application.
“To achieve this, we will use both scale-model testing and calibrated numerical simulation of the rock anchor systems under realistic operational conditions. This is a specialist area of expertise at the University of Dundee, currently being used to develop foundation and anchoring systems for tidal stream generators and future floating wind farms.”
Adoption of the technology would allow fish and shellfish farms to look at areas which are currently unsuitable for use. Locating operations in deeper, higher energy waters could potentially help to reduce gill health issues among fish, the spreading of sea lice, and disease risk. It could also lead to an increase in the industry’s capacity, by allowing the development of larger farms.
Polly Douglas, Aquaculture Innovation Manager at SAIC, added: “This technology could prove a real breakthrough for aquaculture in Scotland, enhancing sustainability in the industry and unlocking some of its latent potential. If successful, the new anchoring technique would support the industry in meeting many of the Scottish Government’s long-term ambitions for the sector, providing a sustainable foundation on which we can double the economic contribution and number of people employed in aquaculture between 2016 and 2030. It builds on many of our previous projects around the prevention of sea lice, gill health, and environmental impact by adopting approaches taken in other sectors and applying them to aquaculture.”
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SAIC’s mission is to transform Scottish aquaculture by unlocking sustainable growth through innovation excellence. We invest in collaborative research projects in the areas of fish health and welfare, nutrition, shellfish production, capacity and sustainable industry growth. We also help grow the industry’s talent pool by supporting MSc and PhD places, internships and training programmes.
About Highlands and Islands Enterprise
Highlands and Islands Enterprise (HIE) is an economic and community development agency implementing Scotland's Economic Strategy across a region that covers more than half the country. With around 300 staff, HIE supports hundreds of client businesses and social enterprises; strengthens communities, particularly in fragile areas; develops growth sectors, and invests in infrastructure to create a more competitive and low carbon region.
About Scottish Enterprise
Scottish Enterprise is Scotland’s main economic development agency and aims to deliver a significant, lasting effect on the Scottish economy. Its role is to help identify and exploit the best opportunities for economic growth. Scottish Enterprise supports ambitious Scottish companies to compete within the global marketplace and help build Scotland’s globally competitive sectors. It also works with a range of partners in the public and private sectors to attract new investment to Scotland and to help create a world-class business environment.
About the Scottish Funding Council
The Scottish Funding Council (SFC) is helping to make Scotland the best place in the world to educate, to research and to innovate. Investing around £1.8 billion of public money each year, SFC’s funding enables Scotland’s colleges and universities to provide life-changing opportunities for over half a million people and to help create a prosperous future economy.
About the Scottish Innovation Centre programme
The Scottish Innovation Centre programme, which was launched in 2013, brings together a network of Innovation Centres focused on different industry sectors or cross-cutting areas of innovation. Each Centre works to establish bonds between Scotland’s universities, colleges and research institutes and industry sectors, translating academic knowledge and expertise into commercially valuable skills and improvements that benefit individual companies as well as Scotland’s overall economy.