In the maritime domain, Habberley and Taylor (1989) have identified two types of officers: some engage manoeuvres at an average distance of 5.3 NM and reach an average passing distance of 1 NM (DCPA), while others engage manoeuvres at an average distance of 3.2 NM to reach a DCPA of 0.5 NM. The authors have shown that there is a relationship between anticipation and expertise. The most highly skilled officers manoeuvre earlier, with greater amplitude, to reach higher CPAs. Similarly, Chauvin and Lardjane (2008) have shown that car-ferries engage manoeuvres earlier than cargo vessels, and that the car-ferry officers thus anticipate more than officers working on other types of vessels.