INDEX 



Page 907 



Reference 

 Field Record Book, Coast Pilot— Con. No. 



Entries made in 91326 



Preparation of 9131a 



Section for assembly of tables _-. 9131o 



Field work 



Progress reports, monthly, required 8514 



Season's report --- 8515 



Film (see Celluloid) 



Filter junction box, Dorsey Fathometer No. 3 . 5261 

 Fish and Wildlife Service, Coast Pilot require- 

 ments 916 



Fish, dangers and shoals disclosed by 3623c 



"Fish", 808 Fathometer (see also 808 Fath- 

 ometer, fish) 



Definition 5161 



Fisheries, Bureau of 6322 



Fishermen to be consulted about shoals 3622 



Fishers Island Sound, round experiments in... 611 



Fish trap areas affecting navigation 916 



Fix (see also Position, hydrographic, and Three- 

 point fix) 



Accuracy decrease with distance 33 



Definition 33 



Strength of 33 



Flag, C. & G. S. service, display of 1583 



Flags 



Display of 1583 



International Code 



Signals to indicate survey activities 1584 



Use 1584 



Flagpole, definition- 8534C 



Flagpoles, value as landmarks 8534 



Flagstaff -definition- 8534C 



Flag tower, definition 8534C 



Flat bottom, spacing sounding lines over 3151 



Flats, extensive, sounding lines on 3141B 



Flats, low -water limits on smooth sheet 7862 



Flats, sounding with pole on 461 



Flinders bar 4411 



adjustment 4414 



Float attached to leadline in determining least 



depths 3664 



Floodlight to illuminate leadline 3421 



Foraminifera 476 



Foredeep, definition 1681'j 



Foreign echo-sounding instruments (see Echo- 

 sounding instruments under national- 

 ity) 



Foremast used as a floating control station 3365 



Form lines 



Accuracy of elevations 382 



by hydrographer 382 



Form for computing elevations 382 



Form for recording observed data 382 



obtained while sounding 382 



Sheetsfor 382 



Forms, use (For the use of any specific form, see 

 reference number in list of forms in 951 

 Forms used in hydrographic surveying (list)... 951 



Foucault's law _ _ 4421 



Foul area(s) 



limits to be located. 364 



Symbolization 364 



Thorough development not required 367 



Undeveloped , symbolization 367 



Four-barrel buoys, description 2827 



412 Fathometer, first use of 5133 



Fractional depths 



Conversion of 7716 



How shown on smooth sheets 7734 



Where required on smooth sheets.- 7713 



French echo-sounding instruments (see Echo- 

 sounding instruments, French) 



French tall signals 272 



Frequency(ies) 

 discrimination 



Amplifier , how obtained 5163 



Receiving-unit 5162 



Radio (see Radio in R. A. R., frequencies) 



Sonic 



Characteristics 5152 A 



Definition 5152 



Directivity 5152A 



Limitations of use in echo sounding... 5152A 



unsuitable for shoal-water sounding 5152A 



Use in echo sounding 512 



Use in navigation 5152A 



Sound-wave {6^6(6) 



Definition- - 621 



Supersonic 



Advantages - 5152B 



Definition 5152 



Use in echo sounding {5152B 



Page 

 813 

 811 

 811 



795 

 790 



482 



832 

 280 



449 

 583 

 278 

 556 

 832 



212 

 212 

 212 

 44 



45 

 45 

 803 

 801 

 802 

 803 

 202 

 199 

 743 

 383 

 335 

 3.38 



284 



255 



413 



54 



298 

 297 

 298 

 298 

 297 

 297 



867 

 340 



282 

 282 

 285 

 285 

 171 

 442 



716 

 724 

 715 



153 



453 

 453 



447 

 447 

 447 

 447 

 447 

 440 

 447 

 558 

 613 

 558 



448 

 448 

 441 

 448 



Reference 



Frequency(ies)— Continued. ^°- Page 



Tuning-fork .verification 5551 520 



Frequency of soundings (see Soundings, fre- 

 quency, and Soundings, spacing) 



Fuel capacity of C. and G. S. survey ships 41 311 



Fulminate of mercury - - 667 624 



Fuse 668 625 



Attaching to detonator 6842 647 



Brands manufactured 668 625 



Burning rates of 668 625 



Factors affecting 668 625 



"Clover Brand" 668 625 



Description 668 625 



deterioration-- 668 625 



Ignition accessories 6844 648 



ignition, evidence of 6844 648 



interval 



Accuracy of determination 6843a 648 



Definition 6843a 648 



, , ... /6813 638 



determmation [^^^^ 648 



record --- 6843a 648 



length 6843 648 



Factors controlling _ 6843 648 



lighters --- 6844 648 



preparation 6842 647 



purchased in small quantities 668 625 



requirements for R. A. R 668 625 



stowage 668 625 



G 



Gaertner chronograph (see also Chronograph, 



R. A. R., Gaertner) 6731 632 



Gaertner Scientific Corporation 6731 632 



Gage, tide (see Tide gage) 

 Gain control 



Chronograph recording in R. A. R., 6724 632 



for bomb reception 6724 632 



for radio-signal reception 6724 632 



Echo-sounding instrument 



adjustment 5237 471 



advanced as much as practicable 552 510 



Precautions in adjusting 57(a) 542 



„ , ,. f5163 453 



variations, effect on soundings \571a 544 



Galley proofs, correcting 9138 822 



Gasoline, used to clean instruments.- 4313 332 



Generic terms 164 50 



Standardized use of 168 53 



Geodetic control (see also Control and Triangu- 

 lation) 



Coastal , d istances between stations 1212 10 



Project instructions for 1212 10 



Geodetic datum (s) (see also Geographic datum) 



Definition 2171 67 



established by taut-wire traverse 2564 140 



Independent 2171 68 



Definition 2171 68 



now in use 2171 68 



Geographic datum 



Changing on survey sheet 736 678 



Graphic method 7363 679 



Numerical method -.-. 7362 678 



Reference station on sheet used 7362 679 



Rule 7362 679 



Use of "lost" stations 7364 680 



Nautical chart - 1125 5 



Definition 1125 5 



How to identify 1125 5 



Geographical names. Board on (see Board on 

 Geographical Names) 



Geographic name(s) 16 46 



Accuracy in reporting 163 49 



Alaska (Baker's Dictionary)-. 1672 53 



Assignment of new 164 50 



Charted , importance of correctness in... 162 47 



charted incorrectly 162 48 



Coast Pilots, in {gjg §32 



Consulation of map sources-- 162 47 



Decision by the Board required 1672 53 



Descriptive , unsatisfactoriness of 164 50 



fl63 49 



165 50 



Descriptive Report requirements \ 7871 745 



8i2R 790 



[8433 791 



„. ri62 48 



disagreeing in name, usage, or spelling \U72 53 



Disputed - 167 51 



Dual for one feature 162 47 



J ,. ,. /1671 52 



duplication \i^-j2 51 



Examples of information- 1663 5 



