Figure 2

Relationship between the 3-D view of the deck-landing-ability landscape and the design of the visual Augmentation. The 3-D landscape confirms that \({V}_{td}\) changes with time as a function of the ship’s heave movements, but that it also depends on the lift applied to deck. When freezing the lift capabilities at a single \({L}_{attempt}\) value during the descent (using either Heavy-Lifter or Low-Lifter helicopters), slices can be extracted from the 3-D landscape and presented in a 2-D visual Augmentation. The 2-D visual Augmentation makes visible windows for safe deck-landing as colored valleys, during which deck-landing should be triggered so that landing can be attempted with \({V}_{td}\) < \({V}_{crt}\). The red horizontal line stands for the \({V}_{crt}\).