DP

Dynamic Positioning — an automated computer-controlled system that uses thrusters to keep a vessel at a precise position and heading without anchoring. Essential for drillships, DSVs, and construction vessels in deepwater where anchoring is not possible. DP class indicates the level of redundancy: DP1 (basic), DP2 (redundant systems), DP3 (full redundancy with physical separation). Higher DP class is required for more safety-critical operations.