<abstract xmlns="http://www.w3.org/1999/xhtml">

<p>The article presents an efficient method of optimal thrust allocation over the actuators in a dynamically positioned ship, according to the DNV-ST-0111 standard, Level 1. The optimisation task is approximated to a convex problem with linear constraints and mathematically formulated as quadratic programming. The case study is being used to illustrate the use of the proposed approach in assessing the DP capability of a rescue ship. The quadratic programming-based approach applied for dynamic positioning capability assessment allows for fast calculations to qualitatively compare different ship designs. In comparison with the DNV tool, it gives 100% successful validation for a ship with azimuth thrusters and a pessimistic solution for a ship equipped with propellers with rudders. Therefore, it can be safely applied at an early design stage.</p>
</abstract>

The article presents an efficient method of optimal thrust allocation over the actuators in a dynamically positioned ship, according to the DNV-ST-0111 standard, Level 1. The optimisation task is approximated to a convex problem with linear constraints and mathematically formulated as quadratic programming. The case study is being used to illustrate the use of the proposed approach in assessing the DP capability of a rescue ship. The quadratic programming-based approach applied for dynamic positioning capability assessment allows for fast calculations to qualitatively compare different ship designs. In comparison with the DNV tool, it gives 100% successful validation for a ship with azimuth thrusters and a pessimistic solution for a ship equipped with propellers with rudders. Therefore, it can be safely applied at an early design stage.

Dynamic Positioning Capability Assessment Based on Optimal Thrust Allocation

Polish Maritime Research

This work is licensed under the Creative Commons Attribution 4.0 International License.

{"article-title":"Dynamic Positioning Capability Assessment Based on Optimal Thrust Allocation"}

The article presents an efficient method of optimal thrust allocation over the actuators in a dynamically positioned ship, according to the DNV-ST-0111...

Dynamic Positioning Capability Assessment Based on Optimal Thrust Allocation

Published Online: Jul 21, 2023

Page range: 28 - 38

DOI: https://doi.org/10.2478/pomr-2023-0019

Keywords
optimal thrust allocation, dynamic positioning, quadratic programming

© 2023 Agnieszka Piekło et al., published by Sciendo

This work is licensed under the Creative Commons Attribution 4.0 International License.

Dynamic Positioning Capability Assessment Based on Optimal Thrust Allocation

Published Online: Jul 21, 2023

Page range: 28 - 38

DOI: https://doi.org/10.2478/pomr-2023-0019

Keywordsoptimal thrust allocation, dynamic positioning, quadratic programming

© 2023 Agnieszka Piekło et al., published by Sciendo

This work is licensed under the Creative Commons Attribution 4.0 International License.

Keywords
optimal thrust allocation, dynamic positioning, quadratic programming