Validation of Ship Manoeuvring in Shallow Water Through Free-Running Tests

Abstract

The shallow water effect on ship manoeuvring cannot be neglected. Most sea-going ships become more course stable when they sail from deep to (very) shallow water. International collaborations such as SIMMAN intend to grade up the knowledge on ship manoeuvring prediction through model tests and system based and numerical methods. Free-running model tests executed with the very large crude carrier KVLCC2 at two laboratories have been compared with the results of simulated turning circles and zigzag manoeuvres from two different mathematical models. It was concluded that the type of mathematical model has an important influence on the simulated behaviour. Moreover, further research is necessary as simulations result into a more course stable behaviour compared to free-running tests at model scale.

Determining Restricted Fairway Additional Width due to Bank Effect for Fine Form Vessels

“…Besides the ship speed, Eloot and Vantorre (2011) investigated the influence of bank slopes on bank effect. In this research, a towing tank was used, and the results showed that if ships sail above the slope, sloped banks generate greater force than vertical banks and thus present a greater risk to safety of navigation.…”

An experimental study on the effect of confined water on resistance and propulsion of an inland waterway ship

“…Ship waves in shallow water were addressed by Chen (1999) and Jiang (2003). Manoeuvrability analyses of ships in shallow water were presented by Eloot et al (2015) and Tonelli and Quadvlieg (2015). Gronarz (1997) and Mucha (2017) focused on the mathematical modelling of manoeuvring in shallow water.…”

Multicriteria Analysis Method for Evaluation of Vessel Simulation Models in Open Waters

“…An increasing number of research teams throughout the world are advocating for a change in approach to the evaluation of simulation models (US Coast Guard, 1998; Fang et al, 2012). Berg and Ringen (2011) and Elot et al (2015) raised the point that the methods for validating numerical models used in manoeuvring simulators need to be improved.…”