COMPILATION REVIEW 111 



The chart Compilation should be complete. This implies that all source material pertinent 

 to the job has been considered and that the selected material has been applied in full or in part. 

 The History sheet should be so marked for partially applied material that such material may be 

 fully applied at a later date. Boat sheets, however, or copies of them, should always be fuUy 

 applied since they are advance information, soon superseded by the smooth sheet of the hydro- 

 graphic survey. 



Preliminary and incomplete manuscripts of topographic surveys are not to be used on a 

 chart Compilation. Advance copies, prints, or manuscripts of topographic surveys may be 

 used but should be underscored in red on the history sheet so that the final copy may be exam- 

 ined later. (See page 40.) 



Examine all existing charts of the area and overlapping charts of the same series, for differ- 

 ences which should be reconciled. 



In addition to the qualities of accuracy and completeness, the chart Compilation should be 

 clear and legible. Clarity of expression is important, since the chart is an instrument which the 

 navigator uses in order to follow a safe course. Vital information, such as the dangerous shoals 

 and rocks, the ship channels, and the aids to navigation should not be charted in an obscure or 

 ambiguous manner. Also check to see that there are no conflicts between the various colors 

 to be used in the printed chart. 



Any notes or recommendations to the compiler shall be made on transparent overlays. 

 These overlays together with the entire Compilation should be returned to the compiler for 

 correction. 



692-834 O - £ 



