280 



INDEX 



Section No. Page 



Sounding(s) (continued) 



critical and unverified 1-5 2 



Crossline— , to be plotted first 6-53 218 



crossings, discrepancies at 5-73 158 



datum(s) 1^5,5-102 16,174 



datum verified by Tide Division ... 6-81 228 

 Decimal — , plotting on smooth 



sheet 6-57 219 



depth units, general 5-30 142 



depth units on smooth sheets 6-55 219 



discrepancies resolved in field 5-75 158 



echo, checking with leadline 5-122 189 



echo sounders to be used 5-18 136 



examination of shoals, report of.— 5-70 157 



final, reduced 5-123 192 



fractions and decimals _. 6-57 219 



general requirements 1-33, 5-18 11, 136 



inking on boat sheets 1^0, 5-63 15, 153 



inking on smooth sheet 6-87 230 



Inshore limits of— 5-17 135 



intermediate, recording of 1-33 11 



interval, general rules 1-33, 5-29 11, 141 



Junctions, — at 5-74 158 



leadline (see Leadline) 



leadline examination of shoals 5-69 156 



least depths identified ... 6-54 218 



lines (see Sounding lines) 



negative values (minus soundings) 6-55 219 



"Not to be smooth plotted" 



note 1-28, 5-25 9, 140 



pole . 3-64, 5-95 69, 166 



use in sounding l-35(a),3-63 12,69 



Recording excessive number of — ... 5-29 141 



records, Form 275 _. 1-32 10 



reduction of, general requirements 1-39 13 



selection of :. 6-60 221 



side echoes 5-25 140 



size of numerals... 6-56 219 



smooth plotting procedure 6-53 218 



spacing on smooth sheet 6-59 220 



time, recording of 5-29 141 



use of half units 6-55 219 



vertical casts in overlaps 5-74 158 



wharves and docks 5-83 162 



shown on subplan 5-83 162 



wire (see Wire soundings) 

 Sounding equipment (see also specific 

 instrument) 



echo sounders to be used .._ _ 1-35 12 



identified in descriptive report 7-4D 242 



identified in records 



(Stamp No. 33) 5-92 165 



Sounding line(s) 



beginning the survey.. 5-58 151 



changes in course 5-60 152 



channels 5-24 139 



crossline, general requirements 1-26 8 



discontinuation of 5—18 136 



discrepancies resolved 5-75 158 



following proposed lines _. 5-59 152 



general requirements 1-24 8 



intermediate, reduced spacing 1-28 9 



maximum spacing exceeded 5-59 152 



"Not to be smooth plotted" note 1-28 9 



overlap at junctions 1-29 9 



plotting on boat sheet 5-62 153 



positions at changes in speed .. 5-58, 5-61 151, 152 



ranges, selection and running of... 5-59 152 



shore controlled _ 5-126 193 



spacing 



general rules .1-25, 5-25 8, 140 



in channels 5-24 139 



in harbors , 5-26 140 



Section No. 



Sounding line(s) (continued) 

 spacing (continued) 



offshore surveys 5-28 



on open coasts 5-27 



"splits", running of 5-56, 5-59 



Systems of — 



concentric arcs 5-21 



general 1-24, 5-19 



parallel straight lines 5-20 



radiating lines _. 5-22 



track or cruise lines 5-127 



turns „ 5-60 



Sounding machines 3-70, 3-71, 3-72 



Sounding record(s), 



Form 275 1-32,5-84,5-85 



abbreviations, use 5-86, 5-97 



bottom characteristics 5-88 



Standard— 5-87 



assigned day letters 5-89 



bar check data 



(Stamp No. 35) 5-93,5-110 



bottom characteristic 5-95 



change in course 5-95, 5-97 



changes in instruments 5-97 



changes in phase 5-97 



column 5-95 



completion of 5-99 



Page 



141 



141 



151,151 



137 

 8,136 

 137 

 139 

 194 

 152 

 72 



10, 162 



163, 170 



164 



164 



164 



165, 179 

 166 



166, 170 

 170 

 170 

 166 

 172 



correction units (see also 



Corrections to soundings) 5-101 173 



corrections to echo soundings (see 



also Corrections to soundings) ... 5-105 175 



cover label completed 5-99(b) 172 



detached position 5-96 170 



distance to features in water area 5-97 170 



echo sounder phase comparisons . _ 5-93 165 



echo sounder operation 5-97(h) 170 



electronic control fix 5-96 170 



electronic equipment identified in 5-91 165 



elevation of rocks _.... 5-97(k) 170 



end of days work, information 



required . 5-98 171 



erasures forbidden 1-32, 5-85 10, 162 



examples (Figures 64 to 66) 5-85 162 



explanatory notes initialed 5-97 170 



final reduced soundings 5-123 192 



geographic positions required 5-97(a) 170 



guide notes for smooth plotter 5-62 153 



handlead sounding 5-95 166 



hydrographic survey, index of data 1-32 10 



important features, recording of ... l-32(c) 10 



index of calibrations 5-99(c) 172 



index of hydrographic data 5-99 172 



index of objects 5-99(d) 172 



information at beginning of day's 



work - _ 5-90 164 



kelp, noted .. 5-68 156 



leadline comparison, record of 5-92, 5—93 165 

 magnetic compass, deviation 



table entries _...l-32, 5-99(c) 10, 172 



marked features from presurvey 



review, notes required 5-97(m) 170 



miscellaneous data required 5-97 170 



numbering of ... 1-32, 5-85, 5-99(a) 10,162,172 



page headings 5-89 164 



personnel changes l-32(g), 5-97(c) 10,170 



personnel to be named in 5-90 164 



pole soundings 5-95 166 



position data 5-96 170 



position numbering 5-95 166 



preliminary run 5-94 166 



procedure changes — 1-32 (g) 10 



processing stamp — 5-98 171 



protection of 5-85 162 



