0.0093 



0.0062 - 



0.0031 



, 5-cps 



'Q 



Figure 8 — Analog Spectral Density of a Seakeeping Event with Appropriate Calibration Curve 



0.0093 



0.0062 



0.0031 



5-cps 



Figure 9 — Analog Spectral Density of a Seakeeping Event with Cumulative Energy 

 Distribution Function Superimposed 



42 



