MEASURED 



OBSERVED 



FIGURE II. 



COMPARISON OF MEASURED AND OBSERVED WAVE HEIGHTS 

 OBSERVER Vi LIGHT SHIP AMRUMBANK DEC. 4 - TO , 19 36 



80 _ 



60 



20 



MEASURED 



-- OBSERVED AT OPEN SEA 

 OBSERVED AT BREAKERS 



FIGURE 12.- COMPARISON OF WAVE LENGTH OBSERVER VI 

 DEC. 4-10,1936 



17 



