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2022 Journal Impact Factor - 0.6
2022 CiteScore - 1.7




ISSN 2083-6473
ISSN 2083-6481 (electronic version)




Associate Editor
Prof. Tomasz Neumann

Published by
TransNav, Faculty of Navigation
Gdynia Maritime University
3, John Paul II Avenue
81-345 Gdynia, POLAND
Development and Validation of an Operational Fast Time Ship Manoeuvring Solver to Increase Navigation Efficiency in Horizontally Restricted Waterways
1 DHI Water & Environment, Brisbane, Australia
2 DHI Water & Environment, Gold Coast, Australia
3 FORCE Technology, Kgs. Lyngby, Denmark
ABSTRACT: Growth of demand for containerized cargo shipping has put more ports into pressure to accommodate larger vessels. Considering the limitations on dimensions of navigation channels, this is not feasible unless aiming for significant capital dredging or alternatively creating high precision predictions of vessel motions subjected to environmental forcing and interaction with shallow and restricted waterway. NCOS ONLINE (Nonlinear Channel Optimisation Simulator) is a state of the art navigation support tool which combines DHI’s high level forecast of environmental conditions with mathematical model of ship motions to add an extra level of accuracy in predicting the under-keel clearance and vessel swept path to boost the efficiency of navigation and pilotage within restricted channels. NCOS Manoeuvring Module utilizes an autopilot scheme based on PID (Proportional / Integral / Derivative) controller and Line of Sight Algorithm to FORCE Technology’s SimFlex4 manoeuvring solver for prediction of manoeuvring ship swept path and response, which will effectively bring the accuracy of real time full bridge simulator to fast time operation support tool. In this paper, the result of mathematical model is validated against fullscale measurements of containership transits through Port of Auckland Navigation channel by comparing pilot commands, leeway drift and swept path through output of portable pilotage unit. According to the results the model is found promising to predict the behaviour of human pilots with precision required in operational use. Finally, the swept path and manoeuvring performance of a sample transit is assessed on different environmental conditions and tide stages to evaluate the safe transit windows in operation.
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Mortensen S., Kazerooni M., Harkin A., Womersley T., Jensen B., Dynamic assessment of safety in manoeuvring through constricted navigational channels using online operational system. Australasian Coasts & Ports 2021 Conference, Christchurch, New Zealand, 2021
Kazerooni M., Womersley T., Harkin A., Jensen B., Turning induced heel of large containerships in shallow water through a fully coupled 6DOF manoeuvering solver, 6th MASHCON Proceedings, May 2022, Glasgow UK
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Citation note:
Kazerooni M.F., Rahimian M., Tree M., Womersley T., Mortensen S.B., Jensen B.: Development and Validation of an Operational Fast Time Ship Manoeuvring Solver to Increase Navigation Efficiency in Horizontally Restricted Waterways. TransNav, the International Journal on Marine Navigation and Safety of Sea Transportation, Vol. 17, No. 1, doi:10.12716/1001.17.01.06, pp. 71-76, 2023
Authors in other databases:
Mohammadreza Fathi Kazerooni: ORCID iD Scopus icon56015695900
Masoud Rahimian: Scopus icon57195236719
Marcus Tree:
Tim Womersley:
Simon Brandi Mortensen: Scopus icon36559858400

Other publications of authors:

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