Standard deviation

Standard deviation of maximum monthly wind speeds [length/time]

Standard deviation of the sampling error in estimating *U*r (Equation II-8-4)

[length/time]

Water depth [length]

Probability distribution function

Skew coefficient in the Pearson Type III distribution function (Figure II-8-2)

[dimensionless]

s

Design significant wave height [length]

Significant wave height [length]

Parameter in the Weibull distribution function (Figure II-8-5) [dimensionless]

Skew of ln x corrected for bias in the Log Pearson Type III distribution function

(Figure II-8-2) [dimensionless]

Desired time period used in the encounter probability formula (Equation II-8-2)

[years]

Rank of data value in descending order (= 1 for largest) in distribution function

formulas (Figure II-8-5)

Number of events

Number of months of data used in computing the standard deviation of the

sampling error in estimating *U*r (Equation II-8-4)

The subscript 0 denotes deepwater conditions

Cumulative probability that *H*s # s

Encounter probability (Equation II-8-2)

Time interval associated with each data point [years]

Design wave period [time]

Return period (Equation II-8-1) [years]

&m

Mean value of maximum monthly wind speeds [length/time]

Wind speed with *r*-year return period (Equation II-8-3) [length/time]

Hydrodynamic Analysis and Design Conditions

II-8-61

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