68 



NAUTICAL CHART MANUAL 



ROCKS 



9 



8 



7 



6 



5 



4 



3 



2 



ft 



2 



Chart Symbol 



Atlantic Coast 



•"Rk 



More than I ft I ft. or /ess 



below MLW below MLW 



Awash 

 MLW 



Less than I ft. I ft. or more I foot More than I ft. 



above MLW above MLW above MHW above MHW 



Pacific Coast 



- 7 

 -6 

 -5 



- 4 

 -3 



- 2 



- 1 



- ft 



- 1 

 2 



■ 3 



5 



4 ■ 

 3 ■ 

 2 



1 - 

 ft- 



3 



Cfiart Symbol 



3/?* * 



More than 2 ft. 2 ft. or less 

 below MLLW below MLLW 



Awash 

 MLLW 



Less than 2 ft. 2 ft. or more 

 above MLLW above MLLW 



2 feet More than 2 ft. 



above MHW above MHW 



Relationship of Rock Symbols to Tidal Datum Planes. 



