Additional technologies provide new growth opportunities for the industry:

Offshore fish farming

Technical solutions are being developed to move fish farms offshore to more exposed areas with harsher environmental conditions. The fish farm shall still cater for the generic tasks such as; transport and transfer of fish; feed delivery, feeding; biomass control; fish health monitoring; water quality monitoring; asset integrity; limit effect on surrounding environment; treatment of diseases and parasites; removal of dead fish; and removal and transport of fish slaughter. This means that the fish farm should be designed to handle the increased wave heights, larger environmental loads, larger currents, loads from larger vessels, and more complex logistics. In addition, the fish welfare must be maintained in the more challenging environmental conditions. Therefore, the units will be larger and more capital intensive compared to conventional fish farms with a more challenging logistics chain and a tighter weather window for access to the installations. Innovations in this area benefit from learnings from the shipping and offshore oil and gas sectors. The drivers for moving towards farming in more exposed areas or further offshore, are coastal/inshore area competition, the need to reduce environmental loads from farming, and the wish to increase distance between sites to limit exposure to diseases and parasites from neighbouring farms. Aquaculture in exposed marine and offshore areas restricts the range of potentially farmable organisms. 1 Some early movers have started fish farming in rougher areas offshore, representing the first steps towards the next-generation aquaculture and we expect an increased deployment towards 2030.

Technical solutions are being developed to move fish farms offshore to more exposed areas with harsher environmental conditions. The fish farm shall still cater for the generic tasks such as; transport and transfer of fish; feed delivery, feeding; biomass control; fish health monitoring; water quality monitoring; asset integrity; limit effect on surrounding environment; treatment of diseases and parasites; removal of dead fish; and removal and transport of fish slaughter. This means that the fish farm should be designed to handle the increased wave heights, larger environmental loads, larger currents, loads from larger vessels, and more complex logistics. In addition, the fish welfare must be maintained in the more challenging environmental conditions. Therefore, the units will be larger and more capital intensive compared to conventional fish farms with a more challenging logistics chain and a tighter weather window for access to the installations. Innovations in this area benefit from learnings from the shipping and offshore oil and gas sectors. The drivers for moving towards farming in more exposed areas or further offshore, are coastal/inshore area competition, the need to reduce environmental loads from farming, and the wish to increase distance between sites to limit exposure to diseases and parasites from neighbouring farms. Aquaculture in exposed marine and offshore areas restricts the range of potentially farmable organisms. Some early movers have started fish farming in rougher areas offshore, representing the first steps towards the next-generation aquaculture and we expect an increased deployment towards 2030. Recirculating aquaculture systems (RAS)

This will be a game changer for some parts of the aquaculture industry. Firstly, the technology makes it possible to grow fish in places where water scarcity is presently a limiting factor. Secondly, with RAS you can grow larger fish in tanks – and, ultimately, establishing a full-growth cycle.5 A series of treatment processes is utilized to maintain water quality. After leaving the vessel holding fish the water is first treated for solids before entering a biofilter to convert ammonia, next degassing and oxygenation occur, often followed by heating/cooling and sterilization. Each of these processes can be completed by using a variety of different methods and equipment, but regardless all must take place to ensure a healthy environment that maximizes fish growth and health. High upfront investment in materials and infrastructure as well as high operating cost costs due to electricity and system maintenance has held back the development. RAS installations can be delivered as turn-key installations, with the possibility of adjusting production capacity by adding modules. RAS technology can also be used to produce fish close to key markets. Therefor we will probably see an increased roll-out during the coming decade, benefitting both onshore and offshore aquaculture growth. However, there are many hazards that need to be controlled, such as animal welfare, persistent infective diseases and water quality.

Opportunities and market impacts

The bulk of aquaculture production occurs in Asia, with China the dominant country (60% of global production) for both freshwater and marine aquaculture.. According to an outlook by OECD and FAO, aquaculture production will grow from around 80 million tonnes in 2017 to between 102-105 million tonnes in 20276, making it the fastest growing food producing sector.

Recent studies have highlighted the vast potential for food production in offshore areas. Most coastal countries could develop domestic marine aquaculture markets that would meet the full seafood consumption requirements of their population. For example, should Indonesia utilize 1% of its ocean area for fish farming, it could increase the fish consumption of its population six-fold.

Risks and uncertainties

While the technology developments described here are responses to risk elements in the industry, new technology is also introducing new risk elements through bigger sites and more complex systems.

The regulation of aquaculture is also complex. Regional planning, spatial planning, industrial development, and environmental issues are directly linked to usage and maintenance of areas. Beyond zoning considerations, public regulation also includes requirements that such operations address concerns with environmental issues, work safety, fish welfare, and production volumes. Without visionary and committed national administrations, growth potential will be hampered.1

Contributors

Main author: Erik Andreas Hektor

Contributors: Marte Rusten; Sharmini Alagaratnam; Bente Pretlove

Editor: Per Busk Christiansen