INDEX 



211 



Pag* 



School (1-65, Ig, Ih) 180 



Seaplane areas and anchorages ( P-9) 20 



Seaplane landing area, note (Figs. 12, 13). 143 

 Seaplane prohibited area, note (Figs. 12, 13) . 1 44 

 Sections of chart, same scale (see Junction 



Notes) 32 



Sector, light (Fig. 1) (K-12; P-4) 83 



Limits (P-4) 83 



Selection of names 105-109 



Selection of soundings 54—55 



Within compass roses 55 



Sewers (H-11) 47 



Shoal soundings (see Evaluation of Charting 



Material) 13 



Notice to Mariners 18 



On isolated rock (0-5a) 55, 67-69 



Selection of 54, 55 



Wire drag 51 



Shoalest curve retained 61 



Shoreline (A) 41 



Unsurveyed (A-1) 41 



Weight of line (Fig. 1) 41 



Signal tower, not used 26 



Signals, fog (N) 184 



Siren (See Horn) 83 



Six-foot curve 62 



Sizes, chart (Fig. 36) 167 



Slanting lettering (see Placement of Names)-- 106 

 Slips and piers, soundings (see Selection of 



Soundings) 55 



Sluice (H-13) 178 



Small-scale charts 2 



Aids (see Overlapping Charts) 17,77-88 



Coast Guard stations (J-3, -Ja) 29 



Depth curves generalized 60, 61 



Fish trap area buoys 22 



Graphic scales not usable (Mercator 



Projection) 97 



High-water line (Fig. 1) (A-9) 41 



Highways (see Cities and Roads) 48 



Light characteristics 79 



Marginal scales added 12 



Omissions (see Selection of Soundings, 



Lights) 54, 55,79 



Rocks 67-69 



Smooth-drafted charts (see Basic Require- 

 ments) 15 



Snags (O-30a) 185 



Sound buoys (Chart No. 1 — Unlighted buoy- 

 age) 195 



Sound signals (see Distance Finding Stations). 84 



Soundings (Q) 51-59 



Basic surveys 50-51 



Blueprints (see Underlined Soundings) 55 



Bottom characteristics (S) 74 



Channel range 55 



Charted in fathoms 53-54 



Charted in feet 53 



Compass roses 9-10 



Critical 50 



Dumping grounds 22 



Page 



Soundings — Continued 



Fractions 53 



Isolated rocks 5S 



Near a depth curve 54 



New, joining old work 55 



No bottom (Q-2) 55 



Omitted - 55 



Plane of reference 51 



Reefs that un cover (Q-8, 17) 65 



Selection 54, 55 



Size of 52 



Slips and piers 55 



Streams (Q-Qa) 186 



Surveyed in feet and tenths 53, 60 



Surveyed in whole feet 53 



Unnecessary 54 



Verification (Compilation review) 19 



Source of Geographic Names 105 



Source of information (History) 36-39 



Sources, original 14 



Spacing of lettering (Figs. 15 to 23) 107 



Spar buoy (Chart No. 1 — Unlighted buoyage) 



(L^8) 195 



Special buoys (Chart No. 1 — Buoyage) (L-Lh) , 195 

 Special-purpose charts: 



Navy 2 



Wreck 70 



Specifications, chart (see History of Carto- 

 graphic Work) 13,36-39 



Plotting sheet adopted for I.H.B 112 



Spherical buoy (Chart No. 1 — Buoyage) 



(1^7) 195 



Spheroids of reference 8 



Spire (I-8b) 27 



Spoil areas (Fig. 1) (G-13) 21 



Stack (1-44) 28 



Stakes (see Piles, etc.) (L-59) 47 



Standard 3, 38 



Bridge clearance 33 



Name (see History of Cartographic Work). 36 



Source of information 14 



Temporary (see Matte Prints) 3 



Standpipe (1-45) 27 



State boundary (P-16) 186 



State plane coordinates (Fig. 4) 104 



Station buoys 83 



Stations (J, M) 180, 184 



Aeronautical radiobeacons (Fig. 24) (M- 



Mc) 30 



Commercial radio broadcasting (M-10)-- 29 



Miscellaneous (J) 180 



Triangulation (D-1) 30 



Statute mile (Figs. 33, 34, 37) 12 



Steeple (see Spire) (I-8b) 27 



Stones (A-llc) - 174 



Stony shore (A-5) 174 



Storm signals (Fig. 9) 31 



Storm warnings (see Storm Signals) notes 



(Fig. 9) 31 



Stranded wreck (0-11) 70 



Stream depths (Q-Qa) 186 



