In which DP vessel Equipment Class may loss of position occur due to a single fault?

In the context of Dynamic Positioning (DP) systems, Class 1 equipment is defined by its vulnerability to single faults that can lead to a loss of position. This class of vessels relies on a single system, which means that if any component fails, there is no redundancy to compensate for that failure. As a result, if a single fault occurs—like a failure in the thrusters, control systems, or sensors—there could be a complete loss of position control.

This is particularly critical in operations where maintaining precise positioning is essential, such as during offshore construction or drilling activities. Other classes, such as Class 2 and Class 3, are designed with redundant systems to ensure that a single failure does not result in loss of position, thereby enhancing safety and operational reliability. Class 0 vessels do not utilize DP systems at all, which makes them irrelevant in the context of this question. Therefore, Class 1 is correctly identified as the Equipment Class where loss of position may occur due to a single fault, given its reliance on non-redundant systems.