STATIONS: 



Triangulation and traverse tjA VML C. O , I ^ T"^ 



Marked topographic .O LICK (mOrkeCl) 



Hydrographic and ordinary buoy \-y \j\JL) 

 R, A R and sonoradio buoy V^;:;^ t.O AU 



Tide O Tide Station 



Arbitrary name assigned Z^i K ! M (BERT, 1942) 



Topographic S-' oOW 



Spotted from photographs V_/ OUp 



in water area (description) O FOf (teiTIp plls) 



Current O Currsnt Station 



SHORELINE: 



From topographic or air photographic survey (0 4 mm ) 



Revision by accurate methods (0 4 mm) 



Revision sketched by hydrographer (0 4 mm.) 



Piers and vnaterfront areas (0,4 mm and 2 mm.) — — 



LOW-WATER LINE: 



Zero depth curve from reduced soundings 



Sketched from hydrographic data... 



Fast, solid land 



(0 2 mm ) 



Marsh, swamp.and mangrove 



(0 2 mm.) 



(0 2 mm ) — 



^^1 1 M I 



Rodded by topographer at low water 

 Sketched from topographic data ... 



ROCKS: Bare 0. (shape or dot) 



AIDS TO NAVIGATION: 



Lighthouse - name from Light List 



and (from list of geographic positions) . 



Structure not used as aid 



Awash '^ 



Awash, individually located by topographer 



Sunken _ 



Sunken, individually located by topographer 



Awash, individually located by hydrographer /j^ Sunken, individually located by hydrographer ■JT' 



<!,. 



(in pencil on smootri sheet, inked at Washington Office only 



^■■ 



A Bay Shaft Light 



(SAND POINT LIGHTHOUSE, 1887) 



A BIRD ISLAND LIGHTHOUSE, 1857 (unused) 



Beacons ( used as station \lJ W I n 



(B Bn No 33) 



topographic location 



I not used as station 



▲ No 33 



— hydrographic location « 



used as station \i) vj K 



(BBnNo33) 



not used as station 



▲ No 33 



Buoy — (hydrographic location identified w L> J O 



by position number) 



OLow 

 (RBnNo32) 



A No 32 



OMoo 

 (RBnNo32) 



A No 32 

 4 N 32 



LANDMARKS: 



Used as control station O TAX ( STACK , white, concrete) 



(landmark: 102ft. above ground, 134 ft. above MHW) 



Not used as control station O TAN K , ELE VAT E D (Country C lu b H 11 Is) 



(landmark: 60 ft. above ground, 241ft. above MHW) 



MISCELLANEOUS: 



Offshore limit of breakers (in pencil) breakeri_ Range line (in pencil) 



Recommended sailing line (in pencil) _24_ 21 Bearing line (in pencil) 



Eddies 

 Tide rips ■ 



Figure 169. — Special symbols for use on hydrographic sheets. 

 (These are in addition to and are sometimes used instead of those 

 shown in figure 189). 



