Standing wave height [length]

Diffracted wave height at a point in the lee of a breakwater [length]

Incident wave height [length]

Reflected wave height [length]

Transmitted wave height [length]

Surf similarity number or Iribarren number (Equation II-7-6) [dimensionless]

Individual stiffness of a mooring line (Equation II-7-29) [force/length]

Effective spring constant (Equation II-7-28) [force/length]

Diffraction coefficient [dimensionless]

Effective diffraction coefficient (Equation II-7-1) [dimensionless]

Wave length [length]

RB

Basin length along the axis *B *[length]

Rc

Channel length [length]

R!c

Additional length to account for mass outside each end of the channel [length]

Length of a mooring line [length]

Waterline length of a vessel [length]

Mass of a vessel [force]

Zero moment of the spectrum

Mass of a vessel due to inertial effects of the water entrained with the vessel [force]

Virtual mass of a vessel (Equation II-7-27) [force]

Water surface amplitude (Equation II-7-7) [length]

The subscript 0 denotes deepwater conditions

Radial distance from the breakwater tip to the point where the diffraction

coefficient (*K*!) is to be determined (Figure II-7-2) [length]

Wave runup above the mean water level [length]

Reynolds number

Vessel blockage ratio [dimensionless]

Wetted surface area of a vessel [length2]

Directional concentration parameter characterizing the directional spread of the

wave spectrum [dimensionless]

Harbor Hydrodynamics

II-7-89

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