INDEX 



Page 905 



Reference 

 808 Fathometer- Continued. ^°- 

 Correcting soundings for index adjust- 

 ment 5545 



depth phase disagreement 5238(p) 



/523 

 depth range - - \ 5237 



depth scales \5237 



Depth units to be used with 3112(c) 



Description - - 523 



Dorsey Fathometer No. 1 used in combina- 

 tion with 545 



draft measurement reference point - 551 1 (e) 



fathograms (see Fathograms, 808 Fathometer) 



Features, salient 523 



fish 



Care 5237 



Description .-- 5231 



illustrated fig. 101 



Inspection -_. - 5237 



Installation.... ^fig^lOS 



gain-control adjustment 5237 



Effect on recorded depths.; 571a 



Effect on transmitted signal 571a 



governor _ 5234 



sparking 5238(i) 



inde.x adjustment 5545 



by bar check. _ I 5545 



Effect on soundings in fathoms 5545 



for soundings in fathoms 5545 



for soundings in feet 5545 



installation 544 



Permanent 5236 



Lubricants for 5237 



Lubricating schedule 5237a 



motor, driving, speed control of 5234 



motor speed, adjustment and verification {see 



also 808 Fathometer, tachometer) 5554 



operation 5237 



difficulties evidenced on fathogram 15238(ii) 



for different depth units 5545 



remedies 5238 



troubles... 5238 



parts, principal 523 



phases 5232 



phasing mechanism imperfections 5238(p) 



Errors due to 5238(p) 



phasing mechanism operation 5232 



receiving unit 5231 



frequency 5231. 



installation 5231 



recorder cabinet 5232 



Description 5232 



panel 5232 



parts 5232 



recording mechanism operation 5232 



repairs 5237 



f523 

 Scales of , fathograms -igga? 



Separation effect •jggg 



Sounding errors due to phase 5238(p) 



Soundings in fathoms, corrected for index 



adjustment 5545 



Soundings in disagreement on different depth 



phases 5238(p) 



spare parts required 5237 



speed, motor, verification and adjustment 



(see also 808 Fathometer, tachometer)- 5554 



speed verification 5234 



stylus arm 5232 



tachometer 5234 



frequency, verifying 5554 



operating unsatisfactorily 5238(j) 



Operating with an erroneous 5554 



operation 5234 



Percentage of error 5554 



reed frequency values (table) table 13 



transmitted signal 



Adjusting 5232 



Effect of change of speed on 5545 



Recording 5232 



transmitting unit 5231 



frequency 5231 



installation 5231 



Warm-up period 5237 



Elapsed times, R. A. R. 



Conversion formula 8311 



converted to plotting intervals 8311 



Definition 6853e 



dependent on path of sound 635 



Entering in Bomb Record 8311? 



from Dorsey chronograph 6733a 



519 

 473 

 462 

 471 

 462 

 471 

 192 

 462 



506 

 508 



462 



471 

 463 

 463 

 471 

 469 

 470 

 471 

 544 

 544 

 468 

 472 

 519 

 519 

 519 

 520 

 520 

 505 

 470 

 471 

 471 

 468 



523 

 470 



472 



519 

 472 

 472 

 463 

 465 

 473 

 473 

 465 

 463 

 464 

 464 

 464 

 464 

 464 

 464 

 465 

 471 

 462 

 471 

 464 

 525 

 473 



620 



473 

 471 



523 

 468 

 465 

 468 

 523 

 ■472 

 523 

 468 

 523 

 469 



465 

 519 

 465 

 463 

 464 

 464 

 471 



778 

 778 

 654 

 589 

 777 

 634 



Reference 

 Elapsed times, R. A. R.— Continued. N°- 



Reporting to plotting station (example) _ 6813 



Elasticity of a medium, modulus of 63 



Electrolytic action between stainless steel and 



ordinary wire rope 2832 



Electromagnetic unit of echo-sounding instru- 

 ments 8161.4 



Description - 5161^ 



Frequencies at which used 516M 



E. Lester Jones-.. 413 



Accommodations 4131 



Boats, small 4132 



General description 4131 



Navigation equipment 4132 



Propelling machinery 4131 



Sounding equipment 4132 



Elevations 



given in Coast Pilots 916 



Unit of measurement --- 124((i) 



Embayments, terminology used 1682o 



Engineers, Corps of 

 control stations, topographic connection 



with.... 236 



echo-sounding instruments 529 



hydrographic .surveys 

 compared with new hydrographic surveys 



in Descriptive Report 842L 



Junctions with 3131 



not duplicated 351 



to be consulted for dangers and obstructions 



removed .- 3523 



Engineers' handbooks (list) 9534 



English echo-sounding instruments (see Echo- 

 sounding instruments, English) 



Enlarged subplans on smooth sheets ... 7751 



Enlargements of hydrographic surveys using 



"circle" slaeets --- 376 



Ensign-Bickford Co 668 



Ensign, national, display of 1583 



Epithalassa, definition ... 632a 



Equipment (see also Instruments; Navigation 

 equipment; and Survey equipment) 



Definition, for accountability 43 



Depth-finding 46 



Echo-sounding (see Echo-sounding in- 

 struments) 



expended in place 433 



Experimental , report on 8581 



inventory 433 



Navigation ^ 44 



Position-location 44 



R.A.R. ship (see R.A.R. equipment, 



ship) 



Equipment and instrument(s) 43 



Care of 431 



Improvements in 43 



overhauled between seasons 4314 



repairs 4314 



sent to Washington Office for repairs 4314 



Surveys ship to be equipped with 43 



tests, periodic 4311 



Erasers, colored, tend to discolor sheet 727 



Erasing machine, electric 4852 



Advantages 4852 



Method of use 4852 



use on smooth sheet 727 



Erasures from smooth sheet 727 



Erasures never permitted in Sounding Record. 81 

 Erroneous charted soundings, investigation 



from vessel en route - 173 



Errors 



caused by improper illumination 4113 



discovered on charts 8523 



Small , accumulation of -.- 361 



Esterbrook pens - 725 



Estuaries, limit of sounding in 3123 



Excelsior not to be used in packing instrments-j^g^jj, 

 Expansion in drawing paper (see Distortion) 

 Explanatory notes (see Notes, explanatory) 



Explorer 4 12 



Accommodations 4121 



Dimensions and particulars 412 



Drafting room 4122 



Echo-sounding equipment 4122 



Electric plant 4121 



Fire protection system 4121 



Fresh water evaporating capacity.- ....^ 4121 



General description -. 4121 



Launches \42ll 



Loud-speaker communication system . 4121 



Navigation equipment -' 4122 



Propelling machinery 4121 



Radio equipment .- 4122 



Refrigeration system... 4121 



Page 

 638 

 574 



173 



449 

 449 

 449 

 321 

 322 

 322 

 321 

 322 

 321 

 322 



831 

 15 



54 



94 

 499 



789 

 195 

 268 



269 

 871 



295 



625 



44 



576 



330 

 383 



334 

 805 

 333 

 335 

 335 



330 

 330 

 330 

 332 

 332 

 332 

 330 

 331 

 666 

 434 

 434 

 434 

 666 

 666 

 757 



317 

 797 

 277 

 665 

 194 

 334 

 380 



318 

 319 

 319 

 320 

 320 

 319 

 320 

 319 

 319 

 320 

 323 

 320 

 320 

 319 

 320 

 320 



