INDEX 



Page 933 



Reference 

 Survey(s)— Continued. ^^■ 



U. S. Engineers , use 916 



Wire-drag (see Wire-drag surveys) 



Surveying, land; reference books (list) 9533 



Swell, allowance for sounding in 3421 



Swell (submarine feature) , definition _ . . 1681c 



■"Swinger," definition 3332 



"Swinger" fixes, plotting. 7625(c) 



Symbols (see also Symbolization under feature 

 name) 



Circular , drawing with drop bow pen. . _ 4841 



Degree and minute 7323 



Nautical chart (illustrated) fig. 189 



Smooth-sheet 



Neat but not artistic 785 



Special not used on charts 785 



Standard to be used on smooth sheets.. . 721 



Synchronous motor (see also under Dorsey Fath- 

 ometers) 



Dorsey Fathometer No. 1 5243 



to control speed of echo-sounding instruments 5165 

 . Synchronous speed (see under Dorsey Fathom- 

 eters) 

 Systems of buoy control (see Buoy-control 

 schemes) 



T 



Tables 



Conversion 



Fathoms 963 



Feet 963 



Kilometers 963 



Meters 963 



Miles, nautical 963 



Miles, statute 963 



Scales, map 963 



Temperature, centigrade 963 



Temperature, Fahrenheit 963 



Yards 963 



Half-cosecants, natural 964 



Half-cotangents, natural 964 



in Coast Pilots 916 



Pressure corrections 9611 



Salinity corrections 9611 



Trigonometric functions for "circle" sheet 



construction 964 



Velocity correction factors for use in echo 



sounding 9613 



Velocity of sound 9611 



Velocity reduction factors for use in R. A. R. . 9614 

 Tachometer, reed, on echo-sounding instru- - 

 ments (see also under 808 aiid 312 

 Fathometers) 5165 



{516') 

 5234 



Principle 5165 



Purpose 5165 



verification and adjustment (see under 808 

 and 312 Fathometers) 

 Taflrail log (see Log, ship, taffrail) 



Talc, used on tracing cloth 7141 



Tallow, used for arming lead 4664 



Tandem control 3366 



Standard maneuvers of two ships on turn... 3366 

 Tangents, shoreline 

 below the visible horizon 



Angles to 3336b 



Height of eye to be recorded 33366 



Sextant angles to 3336b 



used in three-point fixes 33366 



Tanks for acoustic units 



Care 543 



Specifications 543 



Tanner-Sigsbee reversing frame 4721 



Tapes, chronograph (see Chronograph tapes) 

 Taut-wire 

 apparatus (see also Taut-wire measurements) 



calibration 4467 



along a known distance 4467 



Cyclometer wheel measured directly 4467 



Frequency of 4467 



Methods 4467 



Care of 4464 



covers 4464 



cyclometer wheel, dimension 4467 



Description, general 446 



Distance measurements with 4466 



Distance to be used in calibrating 44G7 



Errors caused by inaccurate calibration 2564 



Grease from new reel of wire 4464 



History 446 



installation 4463 



Large 



Capacity, wire 4461 



Description, specific- 4461 



Dimensions 4461 



Page 

 826 



870 

 255 

 54 

 217 

 702 



432 



669 



fol. 888 



743 

 743 

 663 



475 

 454 



882 

 882 

 883 

 882 

 883 

 883 

 884 

 883 

 883 

 882 

 885 

 885 

 839 

 875 

 874 



885 



879 

 873 



881 



455 

 455 

 468 

 455 

 454 



662 

 398 

 231 

 232 



220 

 220 

 220 

 220 



505 

 505 

 405 



358 

 359 

 358 

 358 

 359 

 355 

 355 

 358 

 352 

 356 

 359 

 141 

 355 

 352 

 354 



353 

 353 

 353 



Taut-wire— Continueil. 

 apparatus— continued. Reference 



large— continue<i. ^O- 



Weight of standard and reel full of wire.. 4463 



lubrication 1|^^ 



Measuring distances with 4466 



operation 4461 



Preparing for use 4465 



Small 



Capacity, wire 4462 



Description. 4462 



Dimensions 4462 



Tension on wire 4466 



Use in locating control buoys 4466 



Use in running survey 3941 



Wire, arranging on 4465 



distances used to locate control buoys liw 



measurements («ee also Taut-wire apparatus 

 and Traverses, buoy) 



Accumulative errors of 2525 



Accuracy of 4468 



Courses, straight, to be maintained 4466 



Inaccuracies in 4468 



Passing buoys during 4466 



Personnel duties 4466 



Personnel requirements 4466 



Preliminary run required at beginningr4466 



of \4468 



Record of observations ._ 4466 



Speed of ship 4466 



Unknown factors in 4468 



Wire, cutting, at end of 4466 



traverses 



Control buoys located by 256 



Geodetic datum established by 2564 



Personnel needed for (table 2) 142 



Records and reports required (list) 8351D 



Records required 8323 



Taut-wire sun-azimuth traverse, accuracy of. . . 213 

 Telegraph and telephone line clearances 



Field data required 3836 



Smooth-sheet requirements _ 78466 



Telegraph snapper (see Snai)per) 

 Telescope, binocular, sextant (see Sextants, 

 telescope, binocular) 



Telescopic alidade 4435 



Advantages 4435 



Bearings with 3361 



Accuracy of 4435 



Description 4435 



Temperature (s) (sea water) («ee also Ther- 

 mometer, deep-sea) 632 



Accuracy requirements for echo sounding 6313 



Accuracy requirements for velocity correc- 

 tions 5612 



Average conditions assumed in R. A. R.. 6362 



Coastal waters 632c 



Continental Shelf 632c 



conversion tables 963 



curves («ee a7so Bathythermograph) 6342 



Alaska, offshore {^2/'^'^ 



Atlantic Ocean, offshore .... {^32f^^ 



Colors used in plotting 5612 



C urrent, water, effect on 632c 



Definition 632 



Factors affecting _ 632 



Inking 6342 



Mexico, Gulf of, offshore {eli/^" 



Monterey Bay, California {e,i2d^^ 



Pacific Ocean, offshore Hiif^'^ 



Plotting — {5612 



Depths exceeding 120 fathoms 5612 



Preparation, for velocity corrections in feet. 5615Bc 

 Purpose 6342 



Records to be transmitted (gaai 



curve.s, mean 5612 



Plotting 5611(1) 



Preparation 5612 



Graphic method : 5612 



Mathematical method 5612 



Depth, relation to 561 



distribution, geographic. 632a 



Diurnal variation in 632e 



Epithalassa, definition __ 632o 



errors (thermometer) 4712 



Graph of 4713 



gradient 



Definition 632a 



Page 

 354 

 355 

 355 

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 355 



354 

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 357 

 356 

 309 

 355 

 119 

 121 



119 

 360 

 357 

 360 

 357 

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 356 

 357 

 360 

 356 

 357 

 360 

 358 



138 

 140 



28 

 785 

 780 



62 



301 

 742 



345 

 345 

 227 

 345 

 345 



576 

 575 



530 

 595 

 577 

 577 

 883 

 587 

 578 

 579 

 578 

 579 

 531 

 577 

 576 

 576 

 588 

 578 

 579 

 577 

 579 

 578 

 579 

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 587 

 531 

 537 

 587 

 588 

 782 

 530 

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 531 

 531 

 528 

 576 

 579 

 576 

 401 

 402 



576 



