Glossary Term
Dynamic Positioning (DP)
Dynamic Positioning, usually shortened to DP, is a computer-controlled system that keeps a vessel on a fixed position and heading by automatically using its thrusters and propellers. Instead of relying on an anchor or mooring line, the vessel continuously corrects for wind, current, and sea movement.
On larger yachts and support vessels, DP is useful during guest transfers, dive operations, submersible activity, or work in areas where anchoring is restricted or unsuitable. The system combines position references, heading data, motion input, and thrust control so the vessel can hold station with minimal drift.
DP matters because it improves control in sensitive operating areas, but it still has limits. Its performance depends on the vessel’s layout, available thrust, sensor quality, redundancy level, and operating conditions. It is also different from ordinary autopilot: autopilot follows a course, while dynamic positioning is designed to maintain position.