This work represents an approach to predict the performance of three joining accessories (shackle, Kenter link and Multifunctional link) for offshore mooring systems under monotonic and cyclic loading. Fifty seven models were analyzed by the Finite Element method using the software Ansys 10. Initially, in order to quantify the influence of the contact conditions and to measure the area where it occurs, three models presenting contacts between the joining shackle and chain links were analyzed varying the diameter (76, 95, 120 mm) and maintaining constant the material’s mechanical properties as well as the applied loads. In sequence, fifty four other models were created without contact conditions, which means that the loads were applied directly on the components in question, with variations in link diameter (76, 95 and 120 mm), in mechanical properties (yield stress and ultimate strength) and in load conditions (proof and minimum break loads). Comparing the joining shackles with the other accessories, the shackles present the lowest stress levels and the best stress distributions with regard to all the cases studied. Three of the fifty four models cited above were selected for predicting their fatigue life making use of the FE-Fatigue software. These represented one of each joining accessory with a diameter considered critical (120 mm), keeping constant the mechanical properties of the material. The results showed that the influence of the component geometry is determinant for the stress values developed during the loading tests as well as its fatigue life. The shackle presented the best results in terms of strength and fatigue life, which was about three times greater than that for the Kenter and Multifunctional links.