INDEX 



Page 923 



Reference 



Rocks— Continued. ^''• 



Topographic and hydrographicdata to be in f363 



agreement 17827 



Topographic and hydrographic differences 



reconciled, rules for 7827 



Topographic sheet, changing symbols 



on 9342rf 



Rocky areas 

 Selected important rocks to be determined - . 363 



Spacing sounding lines in 3151 



Symbolization 782 



Unsounded , symbolization 7826 



Rocky bottom requires examination 3621 



Routes (see Sailing directions) 



Royal National Lifeboat Institution 1582 



Rubber stamps 



for use in Sounding Record. .- 81 



Standard {Hit) 954 



Use (.For the use of any specific stamp, see ref- 

 erence number in list of stamps in 954, 

 page 872) 



Rules of the Road, where obtainable. . 916 



Ruling pens 4842 



Sharpening ^^ 4843 



Run, definition 1682c 



Running survey 



Adjustment of 3941 



Description 3941 



Details obtainable 3941 



Executing a 3941 



Launch used in conjunction with ship 3941 



Personnel required 3941 



Scale, appropriate, for 3941 



s 



Safety fuse match lighter 6844 



Safety of survey vessel <3^g 



Sailing Directions {see Coast Pilots) 



Sailing directions- 916 



Coast Pilot requirements jgjg 



Local described in Coast Pilot 916 



recommended in Descriptive Report 8420 



Recommended verified by sounding 912 



Referencing 916 



Regional described in Chapter 3, Coast Iq}c^-^^^^ 



P"ot- -- - — -\l\l 



Regional tabulated in Chapter 3, Coast/9135i?(3) 



Pilot \916 



Tabular , example 9135B(3) 



Sailing lines, surveyed and described ■. _ 356 



Sailing lines, symbolization on smooth sheet - _ 7845 

 Salinity of sea water {see also Specific gravity 

 of sea water, avd Temperature, sea 



water) 633 



corrections to velocity of sound (table 33) 9611 



curves for velocity corrections 5612 



Form for plotting 5611 



Definition 633 



determinations 16131 



Chemical-titration method 6331 



Frequency requirements --16332 



Horizontal distribution 6332 



Hydrometer method 6331 



Accuracy of 475 



Corrections required 6331 



Terms used 6331 



Hydrostatic weighing method 475 



Miscellaneous methods 6331 



Plotting 5612 



Record required 8331 



Vertical distribution 6332 



Distribution of , vertical 633 



Factors affecting 633 



from graphs fig. 131 



Accuracy of 6331 



from tables in S.P. No. 196 6331 



graphs {see also Temperature (sea water) 



curves) 6331 



Inshore -. 633 



observations (see Temperature (sea water) 

 serial observations) 



Plotting , form used 5611 



Rainfall effect on 633 



record 6331 



recorded on Form 717 6341 



Relationship to 



Chlorinity {formula) 633 



depth 561 



true salt content 633 



281 

 737 



738 



855 



28T 

 202 

 734 

 737 

 277 



757 

 871 



838 

 432 

 432 



55 



310 

 309 

 310 

 309 

 310 

 310 

 309 



648 

 43 

 263 



828 

 825 

 830 

 830 

 789 

 809 

 830 

 817 

 830 

 838 

 817 

 830 

 818 

 274 

 742 



583 

 872 

 530 

 529 

 583 

 410 

 584 

 586 

 530 

 586 

 586 

 584 

 410 

 584 

 584 

 411 

 586 

 530 

 782 

 586 

 584 

 584 

 585 

 584 

 584 



586 

 584 



529 



584 

 584 

 587 



583 

 528 

 583 



Reference 

 Salinity of sea water— Continued. ^'^■ 



River effect on 633 



Surface .-. 633 



Symbolization 633 



Temperature effect on 633 



Term used in C. & Q. Survey 633 



[5612 



Velocity of sound, effect of on <623 



l63 

 Samples, bottom (see Bottom characteristics) 

 Sand 

 banks 



Development- 367 



Spacing .sounding lines in vicinity of 3151 



beaches, inshore sounding along 3122 



Bottom specimen 



Classification 3845 



Description 3845 



Sash cord {see Leadline material) 



Sawdust, not to be used in packing instruments- 434 



Scale(s) J82 



Chronograph (see Chronograph scale) 



Depth , echo-sounding (see under name of 



specific instrument) 



Draft (internal) gage 55H 



Eighth-meter 4821 



equivalents for laying out sheets (tablel) 1361 



Hydrographic survey 



Authorization for large —^ 1214(6) 



compared with chart scale 123 



Determination of 123 



Large , where used 123 



Offshore 123 



Latitude and longitude 4822 



Accuracy attained with 4822 



T^ ■ .- /4822 



Description 17412 



Method of use 4822 



Purpose 4822 



Scales and graduations... 4822 



Use in plotting 7412 



Lockerbie diagonal {see Lockerbie scale) 



Log-factor (see Log-factor scale) 



Map and equivalents (table 0) 963 



Map , definition 123 



Meter («ee also Meter bar) 



Testing before use 7322 



Quarter-meter 4821 



R. A. R. plotting (see R. A. R. plotting scale) 



Special purpose for reproduction at Wash- 

 ington Office 482 



Speed , graphic (see Speed scales, graphic) 



Survey 



How determined 123 



related to adequacy of survey 35 



Where should be larger 35 



Velocity of sound (see R. A. R. velocity 



scale) 



Scaled time, R. A. R., definition 6853(c) 



Scaling chronograph tapes 6853 



S. C. A. M., echo-sounding instruments manu- 

 factured by 531 



S. C. A. M.-Touly- 5314 



Scattering of sound 6233 



Schemes of buoy control (see Buoy-control 



schemes, and Buoys, control) 

 Scope of buoy anchor cable (see Buoys, survey, 

 anchor scope) 



Sea and port term definitions, where found <gjy 



Sea bottom as a reflector of sound 511 



Seamanship 



books, reference (list) 9532 



Practice in 158 



Small-boat landings, in making 1582 



Study of 158 



Treatises on , study of 1582 



Seamount, definition - - 1681c 



Seaplane landing areas -jgjg 



Sea sled, description and use. 4249 



Seasonal reports required 8351F 



Season's report - 8515 



Chronology.- __- 156 



Content --- 8515 



When required 8515 



Seavalley, definition 1682(f 



Sea water 



Composition of — 633 



Uniformity in 633 



pressure (see Pressure of sea water) 

 salinity (see Salinity of sea water) 



samples, obtaining- 474 



samples, preservation 4753 



Sound transmission, a medium for 621 



Page 

 .584 

 584 

 583 

 584 

 583 

 531 

 566 

 574 



285 

 201 

 194 



304 

 304 



334 

 422 



509 



423 



25 



11 



14 



14 



14 



14 



424 



424 



424 



685 



424 



424 



424 



686 



668 

 423 



423 



14 

 267 

 267 



653 

 652 



500 

 501 

 573 



830 

 841 

 437 



870 



43 



44 



42 



44 



54 



834 



838 



329 



785 



796 



42 



796 



55 



583 



584 



409 

 413 

 559 



