INDEX 



273 



Section No. 



Hydrographic (continued) 

 station(s) 

 located by 



air photogrammetric surveys 4-18 



planetable 4-20 



sextant angles 4-26 



unconventional method 4-27 



names (Table) 4-37 



recoverable 4-29 



symbolization (Figure 81) 1-21 



survey(s) (see Surveys, 

 hydrographic) 

 Hydrographic surveying defined -...1-1,2-1 



Hydrometer(s) ..._ 3-125 



use in determining specific gravity 3-126 

 Hydrometer jar 3-122, 3-126 



Page 



117 

 117 

 119 

 119 

 123 

 120 

 7 



1,21 



99 



99 



98,99 



Section No. Page 



Junction (s), hydrographic survey (continued) 



examination of 6-73 226 



overlap required 1-29 9 



transfer of soundings on smooth 



sheet 6-91 231 



where in disagreement 1-29 9 



K 



Kelp 



Dangers and shoals indicated by — 5-68 156 



fathogram interpretation 5^122 189 



Leadline soundings in — 1-35, 3-65 12, 70 



limits shown on boat sheet 6-40 212 



noted in sounding record 5-53, 5-70 150, 157 



symbolization 6-40 212 



Inclined sextant angles, 



corrections to 3-15 48 



Index error, sextant 3-11 46 



Index of hydrographic data 1-32,5-99 10,172 



Indication of shoals 1-27, 5-68 9, 156 



Indicator, Electronic Position 3-23 53 



Induction Conductivity Temperature 



Indicator (ICTI) 3-133 103 



Initial, echo sounder {see specific 

 instrument) 



Ink(s), drawing.. 6-17 204 



Inking smooth sheet details 



(Table 13) _. 6-16 204 



Inking 



junctional data on smooth sheet... 6-91 231 



shoreline on smooth sheet 6-27 207 



soundings on boat sheet ^. 5-63 153 



soundings on smooth sheet _. 6-87 230 



Insets (subplans) 1-7,6-6 2,201 



Inshore limits of surveys 5-17 135 



Inspection of chart agencies _... 2-38 33 



Instructions, project _. 1-3 1 



Instrument(s) (see Equipment and 

 specific instrument) 



accountability for 3-5 44 



depth finding 3-63 69 



drafting 3-137, 6-9 107, 202 



navigation 3-4 44 



oceanographic 3-111 90 



position locating (hydrography) 3-8 45 



requisitions 3-6 45 



shipment of 3-7 45 



survey 



care of. 3-5 44 



inventory 3-5 44 



transfer of 3-7 45 



Instrumental error, echo sounder 5-107 176 



International accuracy standards for 



hydrographic surveys 1-57 19 



International Code Flags.. .2-31,2-32 30 



Intersection stations, 



defined 4_7 114 



description required 4-5 113 



Interpretation of fathograms 5-122 189 



Irregular bottom, spacing sounding 



lines over 5-25 140 



Journal, monthly report and 2-43 35 



Journal, hydrographer's daily 7-1 241 



Junction (s), hydrographic survey 



Boat sheet, soundings transferred 



at— 5-16 135 



descriptive report requirements 7-4 242 



Landings, small boats 2-33 31 



Landmark (s) for charts 2-39 33 



deletions recommended 7-20 250 



identification on smooth sheet 6-36 209 



nomenclature standardized 7-21 250 



preparation of chart sections 7-20 250 



reports required 1-55, 2-39, 7-18 19, 33, 249 



Large scale surveys 5-126 



Launch, hydrographic 



general characteristics 3-2 



Shore party operation of — 2-25 



Layout of sheets 1-7, 2-20 



193 



43 

 28 

 2,26 

 203, 218 



Leaders, use on smooth sheets ...6-15, 6-54 



Leadline(s) 



comparisons 3-67, 5-93 



corrections 5-103 



description 3-65 



marking 3-66 



use in sounding 1-35, 3-63, 3-69 12, 69, 72 



use in examination of shoals 1-35, 5-69 12, 156 

 verification of 3-67 



Leads, sounding 3-68 



Lease of station sites 2-34 



Least depths 



71, 165 



175 



70 



70 



71 

 72 

 32 



determination of 1-27, 5-1 



determined by 



closely spaced sounding 



lines 1-28, 5-69 



drift sounding with leadlines 1-28, 5-69 



wire drag 1-52, 5-124 



emphasizing on smooth sheet 6-54 



from prior surveys 



to be verified ...1-5, 5-15, 5-79 2, 134, 160 



reports required 1-44, 7-4 16, 242 



Ledge (s) definition and symbol 6-30 



Lettering 



boat sheet, station names 1-11, 1-21, 5-10 

 smooth sheets 



character of : 6-13 



orientation of 6-14 



placement of _ 6-15 



Lettering set(s) 3-140 



use on progress sketch 2-44 



use on smooth sheets required 6-13 



Letters, day (see Day letters) 



Leveling, tide station 2-51, 3-143 



Lights, special, to indicate survey 



activities _ 2-32 



Limits, boat sheet 1-7, 2-20 



Limit lines, kelp, breakers, etc 5-14, 6-29 



List of geographic names in 



descriptive report 2—42, 7-7 



Log, ship, use in dead reckoning 5-130 



Loran, standard, for trackline 



control 5-128 195 



9,126 



9,156 



9,156 



18, 192 



218 



209 



4, 7, 129 



203 

 203 

 203 

 108 

 35 

 203 



38, 110 



30 



2,26 



134, 208 



34, 244 

 198 



