DP Rule Utilites
DP Rule Utilities provide a compact set of rule-based calculation tools to support DP analysis in accordance with DNV-ST-0111. The tool enables users to generate environmental loads from wind, current, and waves for user-defined directions, ensuring consistent and efficient load definition.
It also evaluates a comprehensive range of thrust loss effects, including in-line and cross-flow losses, ventilation, actuator–actuator interaction, and actuator–hull interaction effects such as skeg influence, Coanda, and blocking effects. The resulting thrust loss factors and forbidden zones are presented clearly and can be exported in tabular form for direct use in the DP Capability Tool.
In addition, rudder performance curves are calculated, providing longitudinal and transverse force ratios to support assessment of rudder contributions in DP operations.
Key features
