AEROGRAPHER'S MATE 3 & 2 



Figure 10-4. — A sum of many simple sine waves makes a sea. 



209.225 



as the ship's bow, stern, objects in the sea Observational Methods 



such as buoys, floating debris, foam, drifting 



objects, etc. From the preceding statements The means available to obtain sea condition 



it is obvious that the quality of the observa- measurements will determine the methods to 



tions will in large part depend on the alertness, be used in performing the task of observing and 



dedication, and experience of the observer. recording the sea condition. 



184 



