Full Sea Trial Based Estimation of Hydrodynamic Derivatives of a Research Vessel

Eric Kulbiej
European Research Studies Journal, Volume XXIV, Special Issue 4, 469-489, 2021
DOI: 10.35808/ersj/2731


Purpose: The study aims to generate a set of hydrodynamic coefficients allowing for a manoeuvring simulation of an existing vessel. Design/Methodology/Approach: Several full-scale trials of a research vessel mv Nawigator XXI were carried out. A set of hydrodynamic derivatives based on pre-existing semi-empirical formulae was formed and used as a starting point in the tuning phase. The set was tuned so that the summarised error of manoeuvring indices between the simulation and the experimental data would be minimised. Findings: A set of hydrodynamic derivatives named N7 was obtained. It allows for a simulation of manoeuvring capabilities of an existing research vessel with satisfactory accuracy. Practical implications: The pre-existing mathematical model MMG can be supplied with an N7 set generated and tuned in the following study for further simulations of manoeuvres or in derivative studies i.e. concerning planning realistic collision avoidance manoeuvres or track optimisation. Originality value: The obtained set of hydrodynamic coefficients N7 can be successfully used for simulation of mv Nawigator XXI manoeuvrability as it is a new vessel, never previously simulated using an existing and popular MMG model..

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