What typically happens when a thrust failure occurs in a DP system without RPM feedback?

In a Dynamic Positioning (DP) system, when a thrust failure occurs without RPM feedback, the system relies on its capability to maintain position using the remaining operational thrusters. If one or more thrusters fail but the system does not receive RPM feedback to indicate their status, the DP system can still use the remaining thrusters to counteract the forces acting on the vessel, such as wind, waves, and current.

This capability to compensate is vital for maintaining the stability and position of the vessel, especially in critical operations like oil drilling, underwater construction, or survey work. The DP system continuously monitors its position and thrust output, allowing it to adjust the power and direction of the operational thrusters to regain control and stabilize the vessel.

In essence, the remaining thrusters take on the burden of ensuring the vessel remains in position, which is a fundamental aspect of dynamic positioning systems to ensure safety and operational integrity in marine environments.