NavList:
A Community Devoted to the Preservation and Practice of Celestial Navigation and Other Methods of Traditional Wayfinding
Exercise #16 High Altitude Sights near Noon
From: Jeremy C
Date: 2008 Jul 16, 09:34 -0700
From: Jeremy C
Date: 2008 Jul 16, 09:34 -0700
Exercise 16 Position near Noon by High Altitude Sight As promised, I am posting a couple of Celestial Navigation problems that were presented to me on my Last US Coast Guard Examination. I am quoting them verbatim and will give a list of reference materials available in the exam if people wish to replicate my exam conditions. Reference materials: 1981 Almanac, Bowditch Vol 2- 1981 edition, HO 229 Vol 2, Plotting sheets, plotting tools, non-navigational calculator, writing instrument. Here is the problem and multiple choice options: �On 13 November 1981, your 1030 ZT DR position is Lat 19 deg 03�S, Long 6 deg 34�E. You are on course 164 deg T, speed 12 knots. You take the following observations of the Sun: Zone Time GHA Declination Observed Altitude (Ho) 1112 351 deg 55.4� S 18 deg 00.4� 88 deg 08.0� 1121 354 deg 10.4� S 18 deg 00.5 88 deg 33.9� What is the 1200 position?� A) Lat 19 deg 22.3�S, Long 6 deg 37.8�E B) Lat 19 deg 20.1�S, Long 6 deg 41.4�E C) Lat 19 deg 17.6�S, Long 6 deg 39.2�E D) Lat 19 deg 15.8�S, Long 6 deg 36.8�E As a note, the answer MUST be one of the multiple choice options. If your fix does not match the choices, you must choose the one you think is most correct. As you can see, this is mostly a plotting exercise. I suggest using the largest scale plotting sheet you can muster. Jeremy --~--~---------~--~----~------------~-------~--~----~ Navigation List archive: www.fer3.com/arc To post, email NavList@fer3.com To , email NavList-@fer3.com -~----------~----~----~----~------~----~------~--~---
