Page 189 control and signal building 286 



Buoys are named from a prepared alphabetical list, the names being ruled out 

 as they are assigned, in order that there will be no duplication during the season. 



A form is ruled on heavy paper to provide a space for names assigned with three 

 columns opposite. The first column is for the date anchored, the second the date 

 weighed, and the third for any remarks, such as the type, use, or purpose of the buoy. 

 This record should be kept in the front of the "Buoy Data Book" (see 94) and shows 

 at a glance the buoys at their stations at any time. 



The officer, whose duty it is to report to the Washington Office the estabHshment 

 and removal of buoys, should keep a further record by plotting the positions of the 

 stations on a chart of the area. Different symbols are used to differentiate between 

 types of buoys ; the symbol for an ordinary buoy is a single circle and that for a sono- 

 radio buoy is two concentric circles (see 743). Tho respective station names should 

 be noted alongside the symbols. When their establishment is reported, the positions 

 are plotted on the chart, and when their removal is reported the circles are filled com- 

 pletely with ink. The plotted record has an additional value, for by it the distribution 

 of existing control stations may be studied when extensions to the scheme are planned. 



