24 FAimCAL CHART MANUAL 



RANGE LINES (Fig. 1) (P-1) 



Ranges shall be shown by a solid line from seaward to the point where the vessel should 

 leave the range. From that point the range shall be continued with a short-dashed hne through 

 the navigational aids. The visibility of range lights is not charted. 



RANGE NAMES 



The names of ranges given in the Light List should be added to all large-scale charts when 

 convenient. 



VI 



Landmarks and Stations 



LANDMARKS (Fig. 18) (D, I, J) 



Only those objects which have been recommended as landmarks shall be charted. 



If determined by triangulation, the positions of landmarks must be carefully plotted by 

 their geographic coordinates, directly from the lithographed sheets if available. See special 

 file of triangulation diagrams which are overprintings on a selected set of nautical charts 

 covering the entire charted coastal areas. Diagrams are also available for all the states. 



If determined by stereo bridging, the positions of landmarks shall be plotted by using their 

 geographic coordmates, directly from Form C&GS-567, "Nonfloating Aids or Landmarks for 

 Charts." 



When determined by some other method, (sextant fix, Kelsh Instrument, planetable, 

 photo plot), the landmark position shall be carefully transferred to the Drawing from the 

 sm-vey or topographic sheet. Since landmark reports are generally received in advance of 

 final survey data, the initial application of new landmark information in maintenance revision 

 will usually be directly from the Form 567. Such action should be clearly stated by the 

 compiler on the form. 



The Photogrammetry Division should be requested to locate acciu-ately any landmark, 

 the position of which is questionable. All deletions and additions of important landmarks should 

 be published in the Notice to Mariners. 



Objects reported by the Aeronautical Chart Division and other sources are not to be 

 considered of sufficient accuracy for nautical charting, unless clearly stated otherwise. A 

 file of these objects and recommended landmarks not accurately located will be maintained in 

 the Standards Section. Accurate positions wiU be requested when a field party is being sched- 

 uled for the area. 



Positions of navigationally important objects should be requested immediately. Emer- 

 gency orders wiU be prepared when justified. 



An opening on a bridge symbol should not be obscured by the landmark symbol. 



Names of landmarks should not be abbreviated unless they fall in a very congested area, 

 but if abbreviated, they must conform to Chart No. 1, "Nautical Chart Symbols and Abbre- 

 viations," which has an alphabetical list of abbreviations, terms and references. 



