PROBLEMS Q4 
LATITUDE BY POLARIS 
Problem 19.—On January 26, 1928, p. m., the U.S. 8. S—2/ in D. R. lat. 27° N., 
long. 118° 36’ W., observed Polaris as follows: W. 8 10™ 208; C—W. 7» 23™ 10s; 
chron. fast 7= 29s. True altitude 27° 50/1. Find line of position. 
h m 8 
‘YS Pe ONG eT 8 10: 20 
VV ee el 23. I) 
(OG OE ES eee naa ine ape een ers 3 33 30 
(Ch CIE OS Se Se cee (—) Tr 29 
CaCO. Janes 3 ue 3 26 O1 
Rp AG IVs Sai@ soos oo 2k 8 20 08.7 
CorraG: Cy P2222) ee 33. 8 
CS es See es a 11 46 43.5 
Rtg fa ce SS Seal a en A I ey RG 
Ge AS eso el ee ee OM ees WV 
ANTON SR cit et ah 152° 48. 87 OW 
NWOT Gee eee, Sr eee (—) 118 488 W 
TEA 8 Ly 7, a le re Face, 34 W. 
t__.34° )\dec. 88° 55.4 N. 
IOS 7? (7) 58.) 25. SUNG A 6196 C 303 Zi 73.0° 
d+b 147 20.9 B 26798 D 193 
A+B 382994 | C+D 496 LZ” —72. 3 
lhe PRIS BE 
ho 27° 50. 1° SY ee 
a= 3. 4’ (away) 
Lat.=27°—3.4’=26° 56.6’ N. (It is the practice to disregard the position 
line and regard it as a parallel of latitude.) 
The line of position is identical with that obtained with Table I a of the Nautical 
Almanac. (The Nautical Almanac solution is shorter for Polaris.) 
