200 



NAUTICAL CHART MANUAL 



B •""• 



Bar, oyster, 65, 69 



Bascule bridge (H-16b) 35 



Basic requirements 15 



Basic surveys, hydrographic 50 



Charting material 13 



When not available (see Wire-Drag Sur- 

 veys) 51 



Basket for clearance depth (0-6a) 51 



Bathymetric compilations 112 



Beacons (L) 77-85 



Bearings, plotting (see Compass Roses) 10 



Bell (J-Jd) 83 



Bellbuoy (L-3) 182 



Bench mark (D-5) 176 



Berm line (see High Water Line) 41 



Berth numbers (G-20b) (Fig. 14) 177 



Bessel's spheroid (see Geographic Datums) 8 



Blueprints 16 



Clarification for microfilm 17 



Disposition notations 16 



History 36 



Rectangular coordinates 1 01-104 



Blue ring copy 5 



Blue tint (see Tints in Water Areas) 62 



Wrecks 70 



Blue tint omitted 62 



Bluflfs (A-2) 44 



Boat harbor (G-33) 134 



Boom, log (H-Ha) 178 



Borders (Figs. 1, 3-5) 12 



Neatline (Fig. 1, 3-5) 12 



Scales (Fig. 6) 12 



State plane coordinate ticks (Fig. 4) 11 



Subdivisions (Figs. 4, 4A) 12 



Bottom characteristics (S) 74 



Within compass roses 55 



Boundaries: 



International (Fig. 1) (P-16) 186 



State (Fig. 1) (P-16) 186 



Breakers (A-12; 0-25) 23 



Breakwaters (G-6) 47 



Bridge (H) 33 



Bascule (H-16b) 35 



Clearance file 33 



Clearance notes (Fig. 19) 33 



Draw (H-15) -.. 33 



Fixed (H-14) 33 



Horizontal clearance (H-18b) 33-35 



Lift (H-16a) 35 



Opening obscured by landmark symbol 24 



Pontoon (H-17) 35 



Removable span 35 



Retractile 35 



Swing (H-16) 35 



Vertical clearance (H-18a) 33-35 



Weighbridge (H-16b) 178 



Bridge clearances (H-18a, 18b) , 33-35 



File„. , , 33 



Pas* 



Bridge list, Corps of Engineers. -. 33 



Broadcasting stations 29 



Buildings (I-3a, 5) 28,49 



Buoys (L) (Chart No. 1 — Lighted and un- 



lighted buoyage) 81, 83 



Along channels 77, 78, 82 



Buoys and characteristics on Compilations. 81 



Buoys and characteristics on Drawings.. 81 



Characteristics, type (Fig. 21) 81 



Color 81 



Fish trap areas 82 



Light (L-2) 81 



Marking two channels (Chart No. 1 — • 



Buoyage) 197 



Mooring (L-22 to 22c) 81-82 



Omissions of characteristics 81 



Orientation of symbols 82 



Periods (cycles) 81 



Position of (L-1) 81 



Station 83 



Symbols used on charts 81 



Unlighted, along channels 82 



Buoys and beacons (L) 81, 82 



c 



Cable or Pipelines (Figs. 1, 13) (P-7 to 8a)..- 21, 62 



Cable permits (see Corps of Engineers) 62 



Cable, overhead power (H-4) 35, 36 



Can buoy (1^5) 182 



Canal (H-13) 178 



Cancellation of charts 20 



Capitaliiiation 107 



Cartographer: 



Charting hydrographic features 50 



Evaluation of material 13 



Future history record 39 



History... 36-39 



Letter of inquiry for additional informa- 

 tion 14 



Responsibility in making corrections 15, 16 



Selecting names and sizes 15, 105-109 



Catalog of chart numbers 20 



Caution notes (Fig. 12) — 65 



Cellulose acetate (see Compilation Review) — 19 



Cemetery (Figs. 1, 21) (I-17a, 18) 179 



Changes in the nautical chart 1 



Channel: 



Improved (Figs. 1, 21) (Q-5, 6) 62-64 



Inactive 63 



Placing of buoys 78, 82 



Soundings on ranges 55 



Channels buoys (Chart No. 1 — Unlighted 



buoyage) 82 



Channel depths (see Improved Channels) 62-64 



Notes (Fig. 11) 142 



