Publisher : Korean Institute of Navigation and Port Research
DOI : 10.5394/KINPR.2014.38.6.561
Title & Authors
A Study on the Minimum Safe Distance between Two Vessels in Confined Waters Lee, Chun-Ki; Moon, Serng-Bae;
This paper is mainly concerned with the interaction effects between two vessels and sidewall with a mound. Experimental study on hydrodynamic forces between ship and sidewall with a mound was already shown in the previous paper, measured by varying the distances between ship and sidewall. The ship maneuvering simulation was conducted to find out the minimum safe distance between vessels, which is needed to avoid sea accident in confined waters. From the inspection of this investigation, it indicates the following result. When and if one vessel passes the other vessel through the proximity of sidewall with a mound, the spacing between two vessels is needed for the velocity ratio of 1.2, compared to the case of 1.5. Also, for the case of ship-size estimation, the ship maneuvering motion is more affected by interaction effects for the overtaken small vessel, compared to the overtaking large vessel.
Interaction effect;Maneuvering motion;Overtaking and overtaken vessel;Minimum safe distance;Sidewall;Confined waters;
Davis, A.M.J.(1986), "Hydrodynamic Effects of Fixed Obstacles on Ships in Shallow Water", Journal of Ship Research, Vol. 30, pp. 94-102.
Kijima, K, Furukawa, Y. and Qing, H.(1991), "The Interaction Effects between Two Ships in the Proximity of Bank Wall", Trans. of the West-Japan Society of Naval Architects, Vol. 81, pp. 101-112.
Lee, C. K.(2012), "Numerical Study of Hydrodynamic Interaction on a Vessel in Restricted Waterways", International Journal of Naval Architecture and Ocean Engineering, Vol 4, pp. 1-8.
Lee, C. K.(2013), "An Experimental Study on Ship-Bank Hydrodynamic Interaction Forces", Journal of Navigation and Port Research, Vol. 37, pp. 251-256.
Newman, J.N.(1969), "Lateral motion of a slender body between two parallel walls", J. Fluid Mech., Vol. 39, pp. 97-115.
Norrbin, N.H.(1974), "Bank effects on a Ship Moving Through a Short Dredged Channel", Proc. 10th Symposium on Naval Hydrodynamics, Cambridge. pp. 52-63.
Yasukawa, W.(2002), "Ship Manuevering Motions in the Proximity of Bank", Trans. of the West-Japan Society of Naval Architects, Vol. 104. pp, 41-52.
Yeung, R.W. and Tan, W.T.(1980), "Hydrodynamic Interactions of Ships with Fixed Obstacles", Journal of Ship Research, Vol. 24, pp. 50-59.