^'III CONTENTS 



ILLUSTRATIONS (Continued) 



Figure „ 



. . Page 



i.1. Position plotting with Odessey Protractor 53 



13. Electronic Position Indicator ' 54 



14. Shoran equipment, ship installation 58 



15. Raydist equipment for ship station . __.!_"._.l. 62 



16. Raydist phasemeter and recording equipment "." 64 



17. Raydist ground station 65 



18. Corrections to Raydist distances for three-antenna system at 



the Red Station g7 



19. Corrections to Raydist distances for ship antenna system 67 



20. Record from Raydist brush recorder 68 



21. Hand sounding machine ----- ^^ 



22. LL type electric sounding machine _ 73 



23. Registering sheaves _ _ " " 73 



24. Edo 185 (AN/UQN) echo sounder "ZJ""'"' 75 



25. Precision Depth Recorder 77 



26. Edo 255-C shoal water echo sounder.. 79 



27. 808 type echo sounder 82 



28. Echo sounders installed on bridge of survey ship 88 



29. Interior of a hydrographic launch 89 



30. A modern oceanographic winch _ 91 



31. Bathythermograph winch ]"!~ " 92 



32. Bourdon type bathythermograph (BT) 93 



33. Record of bathythermograph data 94 



34. Deep sea reversing thermometers..... 1 95 



35. Nansen bottle 97 



36. Sigsbee water cup and Tanner-Sigsbee reversing frame 98 



Hydrometer set 99 



Graph for converting apparent specific gravity to salinity........ 100 



Snapper type bottom sampling devices... 101 



40. Scoopfish bottom sampler ' 1'"" 102 



41. Phleger corer..... " "" iq2 



42. Dredge ^^"''"Z" 103 



43. Induction conductivity temperature indicator 104 



44. Salinity bridge or salinometer _ 105 



45. Velocimeter jOg 



46. Meter bar and drafting instruments.... ------ ^^^ 



47. Edmonston beam holder IO9 



48. One-barrel survey buoy __ 122 



49. Details of portable Shoran or Raydist shelter 125 



50. Hydrographic stamp No. 42 128 



51. Principle of drawing distance arcs when the station is off 

 the sheet j3q 



52. Drawing arcs with a protractor "".."".."..".7 1 133 



53. Principle of plotting angles without a protractor Z" 134 



54. Systems of sounding lines _ 133 



55. Identification stamp used on fathograms 142 



56. Personnel stamp (visual control) _ 150 



57. Personnel stamp (electronic control) ' "" 151 



58. Stamps 45, 50, and 104 identifying electronic control 

 equipment jg2 



Facsimile of stamp No. 33, sounding apparatus """" 163 



Bar check and leadline comparison stamp 165 



Simultaneous comparison stamp _ Ig5 



62. Facsimile of stamp No. 34 Igg 



63. Facsimile of stamp No. 20 ' 1"Z."ZZ1 166 



64. Record of echo soundings — sextant fixes ......_...". 167 



37. 

 38. 

 39. 



59. 

 60. 

 61. 



