What sensor's forces are factored out when determining the environmental forces acting on a DP vessel?

When determining the environmental forces acting on a Dynamic Positioning (DP) vessel, the forces from the wind sensor are factored out. This is because the wind acts as a significant external environmental force that can impact the vessel's position and movements.

Specifically, the DP system relies on various sensors to gauge the environmental conditions affecting the vessel's stability and calculated position. The wind sensor measures the velocity and direction of the wind, and this information is crucial for the DP system to compensate for wind-induced drift. By factoring out the forces related to wind, the system can more accurately assess the remaining environmental forces, including those from currents and waves.

Using parameters from wind, the DP control system aligns the vessel's thrust to offset these forces, allowing for precise positioning. This adjustment is essential in ensuring that the vessel maintains its designated position or heading against environmental challenges. In contrast, the forces from current sensors, wave sensors, and gyros are part of this calculation and are utilized to guide the vessel in response to those specific environmental inputs.