RELATIVE FREQUENCY OF WAVES OF DIFFERENT HEIGHTS IN DIFFERENT REGIONS 



(Blgelov and Bimondson, I962, adapted from a chart, based on 40,164 

 extracts from sailing ships' log hooks, in Schumacher, 1939.) 



LENGTHS OF STORM WAVES OBSERVED IN DIFFERENT OCEANS 



(Blgelow and Edmondson, 1952) 



lltl 



