The mooring system is a vital part of a fish farm facility. Cages with well-designed mooring systems permit farming farther from the shore, with better consditions for the reared fish. The performance of a cage unit is a function of the optimal balance between all system components, which are fine tuned in respect of individual site characteristics and overall facility content. An optimum distribution of anchorage forces within the cage system enables it to overcome the environmental strains of exposed sites. Mooring analyses are performed to define correct specification of all components. Individually anchored cages can assure safe operation in all climates.