When can thruster bias mode be selected in a DP system?

Thruster bias mode can be selected in a DP system when thrusters are not operational. This mode is typically utilized to maintain vessel station-keeping in situations where one or more thrusters are not functioning properly. By activating thruster bias, the system can allocate available thrust from operational thrusters more effectively, allowing the vessel to compensate for the loss of thrust and continue operations in a more controlled manner.

This approach can help optimize performance and reduce the risk of losing position, especially crucial when the vessel is in critical operations or working under time-sensitive conditions. Understanding when to activate thruster bias mode is essential for effective dynamic positioning and ensuring safety and operational integrity.

In contrast, thruster bias mode is not typically chosen during high environmental conditions where maximum thrust availability is necessary to counteract external forces. It is designed to specifically address situations where one or multiple thrusters are incapacitated, rather than during routine operations or emergencies that do not involve thruster failure.