The updated North Atlantic Standard Wave Data (Rec. No. 34 Rev. 2) released by the International Association of Classification Societies (IACS) in 2022 may influence the fatigue damage of ship structures under springing and whipping. To investigate the impact of the new wave environment on hull fatigue damage, a frequency-domain linear potential flow method was employed to evaluate the fatigue strength of a 325,000 DWT Very Large Ore Carrier (VLOC) under wave-induced vibration in both the old and new wave environments. The results indicate that the fatigue damage of the 325,000 DWT ore carrier in the new wave environment is more than halved, while the contribution of wave-induced vibration to fatigue increases by 0.1922, and the influence coefficient of linear springing rises by only 4%. The study demonstrates that the revised North Atlantic Standard Wave Data may alter the composition of fatigue loads for large ships. This research can provide data support for subsequent revisions of standard loads.
Hu et al. (Sun,) studied this question.