Sight Reduction and Plotting by the NASR Method Quiz Global Navigation Chapter 5

Question 1 The NASR method of sight reduction uses tables contained in the ___ ____ ___________________ to solve for the first triangle. Nautical Almanac

Question 2 What are the entering arguments for the NASR tables to solve for the first?   Assumed Lat and Assumed LHA.

Question 3 In order to find F for the second triangle it is first necessary to determine the sign of Dec. How is this determined? If the body is in the opposite hemisphere from the elevated pole, Dec is negative.

Question 4 In the NASR method, an Assumed Position is used. The Assumed Lo is chosen as : a. the whole degree closest to the DR Lo. b. the whole degree less than the DR Lo. c. the nearest position to the DR Lo for which the LHA is a whole degree. d. the whole degree of the L.

Question 5 In the NASR method, the Assumed Latitude is chosen to be within ____ of your DR or known position. 30’

Question 6 Your position is L33° 15' N, Lo 46°20' W. GHA Schedar is 236° 55'. What will you choose as your Assumed Latitude and Assumed Longitude? GHA Schedar 236°55’ Asm Lo (-) 45°55’ (because 46°55’ would be more than 30’ from DR longitude (Lo046°20’). The assumed latitude is L33°N which is within the 30’ limit from DR L33°15’N. Solution : Asm L 33°N Asm Lo 045°55’W

Question 7 The NASR solution may be used for bodies at any altitude. a. True. b. False.

Sight Reduction and Plotting by the NASR Method Quiz End of Global Navigation Chapter 5