NAUTICAL CHART SYMBOLS AND ABBREVIATIONS 



185 



o. 



Dangers 



1 Rock which does not coi/ei 

 (elevation above MHW) 



» Uncov 2 ft ?(( Uncov 2 ft 



* (21 fe (21 



2 Rocl<. which covers and uncovers, 

 with height in feet above chart 

 {sounding} datum 



3 Rocl< awash at the level of chart 

 (sounding) datum 



*■■ ■■::¥. 



When rock of 0-2 or 0-3 is con- 

 sidered a danger to navigation 



4 Sunken rock ^ith less than 6 



feet of water over it 



(Same as 0-26) 



5 Sunken rock with between 6 and 

 33 ft of water over it 

 (Same as 0-26) 



'S^Rk 



5a Shoal sounding on isolated rock 

 (replaces symbol) 



6 Sunken rock with more than 

 66 feet of water over it 

 (Same as 0-26) 



2\ARk <2hm 3h0bstr 



6a Sunken danger with depth cleared 

 by wire drag (in feet or -fathoms) 



Reef 

 7 Reef of unknown extent 



'^JSub Vol 

 8 Submarine volcano 



V. ' Discol Water 

 9 Discolored wafer 



(hi^ ^ *^° ^'^ 



10 Coral reef, detached (uncovers at 

 sounding datum) 



■'.+ Co , 

 :'+.■■■■■ 



Wreck showing any portion of hull or 

 superstructure above sounding datum 



■.^+H.' Masts 



12 Wreck with only masts visible 

 above sounding datum 



13 Old symbols for wrecks 



13a Wreck always partially submerged 



Sunken wreck which may be dangerous 

 to surface navigation (See 0-6a) 



■■^?)Wft 

 15 Wreck over which depth is known 



16 Sunken wreck, not dangerous to 

 surface navigation 



Foul 



1 7 Foul ground 



Tide Rips __'^ "^ ^^ 



18 Overfalls or Sijmbul used only 



Tide rips '" smutl un-us 



tddies (b (o S) 



I-,, Sytnttol used only 



19 LddieS in small amn 



Kelp -<^ -<?^ ■<^ 



f- ^yntOnl usvd onlu 



20 Kelp, Seaweed ,„ small anas 



21 Bk Bank 



22 Shi Shoal 



23 Rf Reef (See A-lld.llg,0-IO) 

 23a Ridge 



24 Le Ledge 



25 Breakers (See A- 1 2) 



Coral or Rocky reef, covered at 

 sounding datum (See A-lld, llg) 



26 Sunken rock (depth unknown) 



When rock is considered 3 

 danger to navigation 



■^^) Obstr 

 27 Obstruction 



28 Wreck (See O-ll to 16) 



(Wreckage) {Wks. 



29 Wreckage 



29a Wreck remains (dangerous 

 only for anchoring) 



Subm piles 



30 Submerged piling 

 (See H-9, 1-59) 



° Snags 



"Stumps 



30a Snags, Submerged stumps 

 (See L-59) 



31 



Lesser depth, possible 



32 Uncov DriesfSee A-IO; 0-2, 10) 



33 Cov Covers (See 0-2, 10) 



34 Uncov Uncovers 



(See A-IO; 6-2, 10) 



(3) Rep (1958) 



Reported (with date) 



. Eagle Rk 

 * (rep 1958) 



35 Reported (with name and date) 



36 Discol Discolored (See 0-9) 



37 Isolated danger 



38 Limiting danger line 



39 Limit of roctfy area 



41 PA Position approximate 



42 P D Position doubtful 



43 ED Existence doubtful 



44 P Pos Position 



45 D Doubtful 



CIJ Subm □Crib 



Crib (above water) 



(Oa) Crib 



m Platform (lighted) 

 HORN 



lOfy) Offshore platform (unnamed) 



m Hazel (lighted) 

 HORN 



(Oc) Offshore platform (named) 



