Submerged systems means the net barrier between the fish and open sea is even more critical. AquaSim is widely used for analysis of submerged systems to find response from the loads they are exposed to whether it is snap load from buoys through the bridles of local effects within the net.
With AquaSim, the analyst may predict forces, stresses and motions to find applicability of your submerged system for customized locations and environmental loads.
Atlantis by Atlantis Subsea Farming AS.
An example of a submerged system is the project Atlantis, benefitting not only from removing the fish from the part of the water column where salmon lice thrive, but also from avoiding large portions of the forces from waves. Here we see the decoupling of the forces taken up by the buoys verses the effect of waves on the net system itself.
Many submerged systems have ropes from floater to net as the case in this figure. Submergence may be regulated by winches or loops.
Winched submerged system
The air system is an important part of any submerged system for salmon breeding.
Air system by Nærøysund aquaservice