4-54. What is the purpose of the balloon shroud? 



1. To facilitate handling and inflation 

 of the balloon during a period of 

 high winds 



2. To tie the balloon down during infla- 

 tion 



3. To decrease the decension rate after 

 the balloon bursts 



4. To condition the balloon prior to 

 release 



4-55. The braking mechanism of the train regula- 

 tor permits the train assembly to unwind 

 at a nominal rate of how many feet per 

 minute? 



1 . 6 f pm 



2. 9 fpm 



3. 12 fpm 



4. 15 fpm 



4-56. When used, where should the train regula- 

 tor be attached? 



1. Between the parachute and balloon 



2. Between the balloon and radiosonde 



3. Between the balloon and parachute 



4. Between the parachute and radiosonde 



Learning Objective: Identify the 

 computerized network for dissemi- 

 nation of weather and oceanography, 

 products, its operating principles, 

 and the command exercising control 

 over it. 



4-61. Which system is the primary computerized 

 network for dissemination of meteorologi- 

 cal and oceanographic products? 



1. NEDS 



2 . NEDN 



3 . COMET 



4 . COMEDS 



4-62. Which command generates all the basic 

 computer environmental analyses and 

 forecasts distributed via the NEDN 

 circuit? 



1. FWC Pearl Harbor, HI 



2. FWC Norfolk, VA 



3. FWF Suitland, MD 



4. FNWC Monterey, CA 



4-57. How does the theodolite telescope differ 4-63. 

 from the transit telescope? 



1. The line of sight is bent through an 

 angle of 30° 



2. The line of sight is bent through an 

 angle of 45° 



3. The line of sight is bent through an 

 angle of 60° 



4. The line of sight is bent through an 

 angle of 90° 



4-58. When a balloon is tracked with a theodo- 

 lite, what causes the image to appear 4-64. 

 inverted? 



1. The absence of nonerecting eyepieces 



2. The addition of nonerecting eyepieces 



3. The addition of two lenses 



4. The glass prism in the eyepiece 



4-59. What feature of the shipboard theodolite 

 improves the visibility? 



1. The glass prism 



2. The gimble assembly 



3. The ray filters 



4. The artificial horizon 



What provides the capability for trans- 

 mission of digitally plotted analyses 

 to NEDN subscribers across the United 

 States? 



1. Tielines operated by FLENUMWEACEN 

 Monterey 



2. North and south tielines out of 

 Chicago and Dallas 



3. Tielines operated by all FLEWEACENs 



4. East and west coast tielines out of 

 Norfolk and Monterey 



What is the maximum number of charts that 

 can be displayed simultaneously on the 

 NEDS display unit? 



1. Five 



2. Two 



3. Seven 



4. Four 



4-60. What part of the shipboard theodolite 

 tends to keep the instrument in the 

 vertical? 



1. The tripod 



2. The counterweight 



3. The gimbal assembly 



4. The internal spiral cam 



26 



