Abstract
The in-land and nearshore fish farming is facing capacity limitation and onshore push-out regulations. Huge technological innovations are rapidly evolving toward developing competitive Offshore fish farming. These technological innovations are mainly targeting to innovate new farming concepts that dynamically stable, reliable and compatible with offshore environmental loads and conditions. The dynamic operational behaviour of each farming concept is quite complicated. It is a combination of reinforcing behaviours (Loads, cage deformations, welfare issues, e.g. escaping, stress-related disease) and leveraging behaviours (Biofouling-cleaning, Deterioration-maintenance) and all influenced by fluctuating and harsh environmental loads and conditions. Therefore, the purpose of this paper is to analyse the context of offshore fish farming and explore quantitative descriptions of its reinforcement and leveraging behaviours. The context analysis is a well-known method within systems engineering methodology to illustrate and extract critical interfaces. The context analysis is considered as the first step in building simulation model to quantify the impact of systems interfaces on the entire farming economics, i.e. income and cost.
Highlights
The profitability of aquaculture production is highly dependent on the accumulated healthy bio-bass at the end of the production season, and on the other side, operating cost (Crew, feeding, energy, net-related services), maintenance cost, and the associated economic and environmental impacts [1]
The complexity of developing profitable model that represent the offshore fish farming concepts and operations is related to the dynamic relationships among five main processes [7]: fish welfare [8] and growth process, the production process, farm assets, farm services, and the farm site and its environmental loads and conditions [23](waves, current velocities, water temperature, salinity rate, diseases, access-ability)
In the previous section, we tried to explore the interfaces between the interacted systems that are within any offshore fish farming context
Summary
The profitability of aquaculture production is highly dependent on the accumulated healthy bio-bass at the end of the production season, and on the other side, operating cost (Crew, feeding, energy, net-related services), maintenance cost (failures, inspections), and the associated economic and environmental impacts [1]. The complexity of developing profitable model that represent the offshore fish farming concepts and operations is related to the dynamic relationships among five main processes [7]: fish welfare [8] and growth process (eating, swimming [9], growing [10], [11], [12], infection [13], [14], [15], sea-lice growth [16], [17], escaping [18]), the production process (supply, storage, feeding [19], control the artificial conditions, energy consumption [20]), farm assets (stability, deterioration [21], bio-fouling [22]), farm services (net cleaning, infection treatment, maintenance), and the farm site and its environmental loads and conditions [23](waves, current velocities, water temperature, salinity rate, diseases, access-ability). The output is affected by infection and escaping events once they occur
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