Dimensioning of Fairway Bends—Kinematic Method of Numerical Simulation

Stanisław Gucma,Mateusz Bilewski,Jan Dzwonkowski,Marcin Przywarty

doi:10.3390/jmse8020138

Stanisław Gucma, Mateusz Bilewski + Show 2 more

Open Access

https://doi.org/10.3390/jmse8020138

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Abstract

The article presents a new kinematic method of numerical simulation intended for establishing dimensions of safe manoeuvring areas of bends in various types of fairways for vessels of specific parameters. The method consists of multiple numerical simulations of a ship’s passage (ship’s centre of gravity) through a bend, representing the entire physically possible movement of the ship, and an analysis of simulation results. The developed method was verified on the bends of the Świnoujście–Szczecin fairway, by comparing the results to the exact simulation method of a ship’s movements. The relatively high accuracy and low costs of the method allow it to be used in a concept design of built or modern waterway systems.

Highlights

International seaborne trade lost momentum in 2018, with volumes only increasing at 2.7%, after a surge of 4.1% in 2017, in 2018 world seaborne trade volumes rose to a new all-time high of 11 billion tons [1]
The newly developed kinematic method of numerical simulation serves for the determination of safe manoeuvring areas of fairway bends
This method uses a model of ship movement in a bend and consists of multiple numerical simulations of the movement of a ship’s centre of gravity through the bend

Summary

Introduction

International seaborne trade lost momentum in 2018, with volumes only increasing at 2.7%, after a surge of 4.1% in 2017, in 2018 world seaborne trade volumes rose to a new all-time high of 11 billion tons [1]. In January 2019, the world fleet reached a carrying capacity of 1.98 billion dwt, 52 million dwt more than the previous year. One of the major problems in marine traffic engineering is to determine safe parameters of fairways, i.e., safe depth and width at the bottom in straight sections and bends (turns) of the fairway. Dimensioning of fairway bends for known angles of turn and arc radiuses comes down to the determination of their safe manoeuvring areas. A safe manoeuvring area of the bend must meet the basic condition of navigational safety [2]: dik(1−α) ⊂ Di(t) hx,y(t) ≥ Tk + ∆ik(1−α) p(x, y)∈Di (t)

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