of a stepped-resistance wave staff; strip-chart recording were analyzed 

 the significant wave method at ^l-hoiar intervals.) Thus, code figure 2 

 Code Table 17 of the Ship's International Code, which stands for waves of 

 5-second period or less, was taken arhitrarily to represent waves of 

 i+-second period, while code figure 3 (5 to 7 seconds) was taken as 6 seconds. 



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