MEASURED 

 - OBSERVED 



TIME 



FIGURE 7-COMPARISON OF MEASURED AND OBSERVED WAVE HEIGHTS; 



OBSERVER III OF THE LIGHT SHIP BORKUMRIFF NOV. 4-10,1936 



40 



20 



MEASURED 



OBSERVED 



CALCULATED FROM 



NO. OF WAVES 

 COUNTED 



FIGURE 8-COMPARISON OF WAVE LENGTH S ; OBSERVER III OF THE 

 LIGHT SHIP BORKUMRIFF NOV. 4 - 10, I 93 6 



15 



