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Page Title: Assignment 9, Continued
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9-53. 9-54. 9-55. 9-56. 9-57. 9-58. 9-59. 9-60. Which of the following navigational fixes  is  the  least  accurate? 1. Visual bearing and radar range 2. Two radar bearings on two different   objects 3. Tangent  radar  bearings 4. Two radar ranges on two different   objects A navigational fix obtained by radar tangent bearings and compensated by half of the beam width  may  be  considered  accurate. 1.    True 2. False Which  of  the  following  objects should NOT be used in obtaining a navigational   fix? 1.    Buoys 2. Small  isolated  rocks 3. Islands 4. Pilings What  type  of  system(s)  is  SINS? 1. Satellite 2. Inertial 3. Radio  wave Which of the following craft would use  SINS  to  navigate? 1. Rocket 2. Ship 3.    Airplane 4. Each of the above Which of the following is a characteristic  of  SINS? 1. Extremely  accurate,  global system 2. Global,all-weather   system 3. Global, all-weather satellite system 4. Accurate,    all-weather,   dead reckoning system What is the maximum range a radio beacon  is  reliable? 1. 50 mi 2. 100 mi 3. 125 mi 4. 175 mi When a radio beacon is greater than 25 miles, a correction is usually applied to the bearing before plotting. 1. True 2. False 9-61. 9-62. 9-63. 9-64. 9-65. Which of the following is NOT a celestial  method  of  determining gyro  compass  error? 1. Sun line 2.    Azimuth  of  Sun 3.    Azimuth  of  Polaris 4.    Amplitude of Sun What type of time is used in celestial   observations? 1. GMT 2. LMT 3. ZT 4. LT What  information  must  you  first know  to  determine  gyro  compass error? 1.    Time  of  observation,  Julian date,  DR  position,  and  bearing of Sun 2. Time  of  observation,  date,  DR position, and  azimuth 3. Time  of  observation,  Julian date,    DR position, and declination 4.    Time  of  observation,  date,  DR position,   and  declination When an azimuth of the Sun is shot, the bearings are always in true degrees. 1. True 2. False When should an azimuth be taken? 1. Early  morning 2. Mid-morning only 3. Mid-afternoon only 4. Mid-morning or mid-afternoon 9-66. From  what  source  should  the  watch time be obtained prior to a celestial   observation? 1.    AN/WRN-6  only 2. Ship's  chronometer  only 3.    Both 1 and 2 above 4. Ship's  clocks 9-67. Which  navigation  instrument  is  used to shoot an azimuth? 1. Bearing circle only 2.    Azimuth circle only 3.    Alidade 4. Bearing  or  azimuth  circle 59

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