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Can Math Help Farm Salmon


                   in the Oceans?





                     Kongsberg Maritime plans to predict the behaviour of one million
                     salmon in the world’s fi rst offshore aquaculture laboratory.

                                                                                                   By Valeria Criscione



                     In the 1970s, Norwegian professor Jens   SalMar in January 2017 to develop the   contract. Shortly thereafter, one million
                     Glad Balchen at Engineering Cybernetics at   cybernetic technology supporting the   salmon were deposited into the steel wagon-
                     the Norwegian University of Technology and   Ocean Farm 1 project. It was the fi rst   wheel like cage offshore Sør-Trøndelag.
                     Sciences (NTNU) dreamed of modelling the   Norwegian project to receive a development   Kongsberg will now work on developing the
                     oceans so that fi sh could virtually swim in a   license under the Ministry of Fisheries and   two mathematical models for SimSalma and
                     computer. The goal was to mathematically   Coastal Affairs’ new incentive scheme   CyberFish.
                     calculate conditions so that scientists could   created to stimulate new technology
                     simulate the way fi sh behave under water   concepts that help relieve the acreage   CyberFish uses a sensor tag, developed
                     and eventually determine how to control it.  problem and promote sustainable farming.   by Prediktor Medical, to monitor the
                                                                                       physiological parameters of the salmon,
                     Today, his mathematical vision is being   The Ocean Farm 1 project will both push   such as heart rate and metabolism (i.e. how
                     fulfi lled in the world’s fi rst fl oating laboratory   fi sh farming into the most remote and   much energy the fi sh uses when feeding
                     for remote offshore aquaculture at SalMar’s   exposed waters and create the world’s   and growth rate). SimSalma, on the other
                     Ocean Farm 1 project. Together with NTNU,   fi rst automated offshore aquaculture   hand, uses data from several hundred
                     SINTEF Ocean in Trondheim, and Institute   development project. The main goals   sensors to look at the external factors
                     of Marine Research in Bergen, Kongsberg   of the three-year-partnership are two-  around the fi sh. For example, how the fi sh
                     Maritime is developing two mathematical   fold: satisfy the Norwegian regulatory   are reacting to feeding, noise, oxygen, water
                     models - SimSalma and CyberFish – that   requirements for the development license   temperature, water current, light, cage wall,
                     could revolutionize the fi sh farming industry   and create the next-generation monitoring   and neighbouring fi sh.
                     to a whole new level with artifi cial intelligence   and support tool for sustainable and optimal
                     (AI).                            production of fi sh.              This method is unprecedented, according
                                                                                       to Hukkelås. Fish have been tagged before
                     “He was about 40 years too early,” says   In September 2017, Kongsberg Maritime   to track their position and velocity in order
                     Thor Hukkelås, director of aquaculture R&D   fi nalized the fi rst step of the delivery   to monitor their health. A slow moving fi sh
                     at Kongsberg Maritime and NTNU alumni
                     with a master’s degree in engineering
                     cybernetics. “If you want to control
                     behaviour, you have to build mathematical
                     models of the ocean. Now this is possible
                     both because of the development of sensors
                     and computer power. We are simulating one
                     million individual (salmon) in a standard PC.”

                     Do the Math
                     Kongsberg Maritime entered into a three-
                     year partnership agreement with Norway’s







                                   The world’s fi rst offshore
                                    fi sh farm Ocean Farm 1.
                                             © SalMar




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