<abstract xmlns="http://www.w3.org/1999/xhtml"><p> This paper suggests an estimation method for ship’s hydrodynamic coefficients, which is based on the system identification method that calculates an optimum value in a mathematical way. For the purpose of modelling existing ships, this study collects real ship sea trial data as benchmarks. Prior to the optimization, a sensitivity analysis is carried out for easy and effective optimization. The simulation results using optimized coefficients agree well with corresponding benchmarks. Following this, with various trim and draught conditions, this study suggests new estimation formulas that concern all trim and draught conditions. Simulation results applying the estimation formulas are satisfactory in regard to a corresponding benchmark, compared to a result obtained by using an existing regression formula.</p></abstract>

This paper suggests an estimation method for ship’s hydrodynamic coefficients, which is based on the system identification method that calculates an optimum value in a mathematical way. For the purpose of modelling existing ships, this study collects real ship sea trial data as benchmarks. Prior to the optimization, a sensitivity analysis is carried out for easy and effective optimization. The simulation results using optimized coefficients agree well with corresponding benchmarks. Following this, with various trim and draught conditions, this study suggests new estimation formulas that concern all trim and draught conditions. Simulation results applying the estimation formulas are satisfactory in regard to a corresponding benchmark, compared to a result obtained by using an existing regression formula.

Estimation of Hydrodynamic Coefficients from Results of Real Ship Sea Trials

Polish Maritime Research

This work is licensed under the Creative Commons Attribution-NonCommercial-NoDerivatives 4.0 License.

{"article-title":"Estimation of Hydrodynamic Coefficients from Results of Real Ship Sea Trials"}

This paper suggests an estimation method for ship’s hydrodynamic coefficients, which is based on the system identification method that calculates an optimum...

Estimation of Hydrodynamic Coefficients from Results of Real Ship Sea Trials

Published Online: Jan 18, 2019

Page range: 65 - 72

DOI: https://doi.org/10.2478/pomr-2018-0133

Keywords
ship manoeuvrability, system identification method, hydrodynamic coefficients, sea trial, mathematical optimization

© 2019 Daewon Kim, published by Sciendo

This work is licensed under the Creative Commons Attribution-NonCommercial-NoDerivatives 4.0 License.

Estimation of Hydrodynamic Coefficients from Results of Real Ship Sea Trials

Published Online: Jan 18, 2019

Page range: 65 - 72

DOI: https://doi.org/10.2478/pomr-2018-0133

Keywordsship manoeuvrability, system identification method, hydrodynamic coefficients, sea trial, mathematical optimization

© 2019 Daewon Kim, published by Sciendo

This work is licensed under the Creative Commons Attribution-NonCommercial-NoDerivatives 4.0 License.

Keywords
ship manoeuvrability, system identification method, hydrodynamic coefficients, sea trial, mathematical optimization