Stability assessment of tugs in escort operations using a time domain simulation
Dynamic behaviour after impact loads
R.M. Marijnissen (TU Delft - Mechanical Engineering)
HJ de Koning Gans – Mentor (TU Delft - Ship Hydromechanics and Structures)
Siebe Rooijakkers – Mentor (Damen Shipyards)
P.R. Wellens – Graduation committee member (TU Delft - Ship Hydromechanics and Structures)
A Vrijdag – Graduation committee member (TU Delft - Ship Design, Production and Operations)
Niek Teeuwen – Graduation committee member (STC Group)
More Info
expand_more
Other than for strictly personal use, it is not permitted to download, forward or distribute the text or part of it, without the consent of the author(s) and/or copyright holder(s), unless the work is under an open content license such as Creative Commons.
Abstract
Over the past years tugs are evolving to more compact designs equipped with large power installations. This inherently increases the risk of accidents, demanding a more reliable prediction of the tug’s dynamical behaviour in critical situations. To capture the dynamic behaviour of a tug, a time domain simulation tool has been developed and used to evaluate the tug’s safety in those critical situations. Multiple methods derived from recent studies are combined and used to establish a reliable description of the involved hydrodynamic forces and moments. Besides a sensitivity study is performed to investigate the impact of inaccurate approximations of those forces and moments. Furthermore, the sensitivity to a change in more design and operation related parameters has been investigated. Finally, the research includes a step by step validation and an evaluation of the current regulations.