A ship moving steadily forward in shallow water of constant depth h is usually subject to downward forces and hence squat, which is a potentially dangerous sinkage or increase in draft. Sinkage increases with ship speed, until it reaches a maximum at just below the critical speed Here we use both a linear transcritical shallow-water equation and a fully dispersive finite-depth theory to discuss the flow near that critical speed and to compute the maximum sinkage, trim angle, and stern displacement for some example hulls.
Keywords:
Froude number,
midship sinkage,
ship research,
open water,
march 2001,
ship,
hull,
FDT,
experimental result,
equation
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2001. The Society of Naval Architects and Marine Engineers
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