TABLE 11 



Height 



WMO Code 1555 for recording height of the dominant waves 



Code 



Code 



If 50 is added to direotion 



Notes : 



(1) Each code figure provides for reporting a range of heights. For example : 1 = ^ m 

 (1 ft) to 3/4 m (21/2 ft) ; 5 = 21/4 m (7 ft) to 2% m (9 ft) ; 9 = 4l^ m (1314 ft) to 434 m 

 (15 ft), etc. 



(2) If a wave height comes exactly midway between the heights corresponding to two 

 code figures, the lower code figure is reported; e.g. a height of 2% m is reported 

 by code figure 5. 



(3) In aeronautical forecast codes, only the left-hand table is to be used and code 

 figure 9 has the meaning : 4 % m (14 ft) or more. 



(4) The average value of the wave height (vertical distance between trough and crest) 

 is reported, as obtained from the larger well formed waves of the wave system being 

 observed. 



38 



