Optimal sway motion reduction in forestry cranes (Corrigendum)

In the published article, there was an error in Figure 7 as published. The figure was incorrectly replaced with a duplicate of Figure 4, resulting in the intended Figure 7 not being displayed. The corrected Figure 7 and its caption appear below. Comparison of optimal FF controller and without a controller - Slew motion. The authors apologize for this error and state that this does not change the scientific conclusions of the article in any way. The original article has been updated.