SPECIMEN EXAMINATION FOR MASTER 



83 



How does a rhumb line appear on a 

 poly conic chart? 



After laying down a straight line be- 

 tween two points on a polyconic chart, 

 how would you determine the course? 



Positions "X" and "Y" are deter- 

 mined by using the three arm pro- 

 tractor to plot the angles measured by 

 the sextant between shore objects "A" 

 and "B," and "B" and "C." Should posi- 

 tion "X" or "Y" be considered more re- 

 liable? Why? 



Give the meaning of the following 

 symbols as shown on a chart: 



^^ 



e/(v.. 





6. COMPASS DEVIATION. 



(Azimuth — Moon) 

 Enroute from Honolulu, Hawaii to 

 Manila, Phillipine Islands, in D. R. 

 Latitude 22 "-27' North and Longitude 



175°-20' East, an azimuth of the Moon 

 was observed. The following data was 

 obtained at the time of observation: 



Compose Bearing Of Moon 



81 "-00' psc 



Variation for the locality was 9°-00'.00 

 East 

 Required: The true azimuth. 



The deviation of the standard com- 

 pass. 



Greenwich Hour Angle 

 107°-29'.8 



Declination Of Moon 

 2°-51'.3 N. 



9. MERCATOR SAILING. 



By Mercator sailing, find the true 

 course and distance from a point in the 

 proximity of Cape Race in Latitude 

 46 "-18' North and Longitude 52°-35' 



West to Diamond Shoal Light Ship in 

 Latitude SS'-OS'.S North and Longitude 

 75''-19'.7 West. Show all work. 



