Which of the following describes a system that maintains position with the capability of continuing after a single point failure?

A Class 2 Dynamic Positioning (DP) System is designed with redundancy features that allow it to maintain position even in the event of a single point failure. This system has multiple components that can take over the functions of a failed component, thus ensuring continued operation and maintaining the vessel's position. This level of redundancy is crucial in marine operations where safety and reliability are paramount, particularly in harsh environments.

In contrast, other DP classes differ in their level of redundancy and failure management. A Class 1 DP System lacks the necessary redundancy that would allow it to maintain its position following a single-point failure, and the risk of total system failure is greater. A Class 3 DP System, while advanced, is designed to maintain position even in the event of multiple failures but typically involves more complex systems with higher reliability requirements. A redundant DP System is a broader term that could refer to any system incorporating redundancy but does not specifically indicate the operational capability in response to single-point failures.

Thus, identifying the Class 2 DP System as capable of maintaining position after such an event makes it the correct choice for this particular question.