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In this study, we developed the equation of ship wave crests in intermediate as well as deep waters by extending Kelvin’s (1887 ) theory using the recursive relation for the dispersion relation. The present equation can be applied for varying water depth as well a s constant water depth. Using FLOW-3D we conducted numerical experiments to verify analytical prediction. The ship wave crest patterns became asymmetric on a plane slope when the ship propagates alon gshore direction. That is, in shallower side, wave crests tend to be parallel to the coastline due to refraction and, in deeper side, wave crests tend to be orthogonal due to reverse refraction. Key words : Ship wave crest, Cusp locus angle, Intermediate water depth, Varying water depth, Dispersion relation, FLOW-3D      Kelvin (1887)             .          .      FLOW-3D   .    ,            .             . ,           ,          . :  , , , , , FLOW-3D

Prediction of ship wave Crests on Varying Water Depths and Verification by FLOW-3D