The hydrodynamic interaction effects on a tug operating in close proximity to a larger vesselcan result in dangerous situations for the tug. To date most studies have focussed on the interaction effects between the vessels when they are operating in parallel, which represent only one of many practical ship-assist manoeuvres. It is therefore necessary to investigate a wide range of tug-ship combinations to obtain a detailed understanding of these effects. This paper discusses the hydrodynamic interaction effects on a tug operating at various relative positions and drift angles to a larger ship, both moving together at the same forward speed. The hydrodynamic effects were determined using Computational Fluid Dynamics (CFD) simulations that were validated using captive model test data. The range of manoeuvres discussed in this paper provides a comprehensive overview of the hydrodynamic interaction effects on a tug enabling tug operators to identify safe operating envelopes for their vessels.

Item Type:	Refereed Article
Keywords:	tug, interaction, tug-ship
Research Division:	Engineering
Research Group:	Maritime engineering
Research Field:	Marine engineering
Objective Division:	Transport
Objective Group:	Water transport
Objective Field:	Water safety
UTAS Author:	Jayarathne, N (Dr Nirman Sembukutti Vidanelage)
UTAS Author:	Ranmuthugala, D (Professor Dev Ranmuthugala)
UTAS Author:	Leong, Z (Dr Zhi Leong)
ID Code:	131184
Year Published:	2019
Deposited By:	NC Maritime Engineering and Hydrodynamics
Deposited On:	2019-03-06
Last Modified:	2020-03-11
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