FTE OD AW, 
The following two cases, illustrate the method of working problems with these 
tables. Case I covers the majority of problems. Sometimes, however, it will 
be necessary to use Case II. i i 
Case I (L. H. A. between 0° and 90°, or 270° and 360°) 
The U.S. S. West Virginia is making passage from the United States to Monte- 
video. At about 1650, on March 26, 1928, she was in D. R. position, latitude 
31° 04’ .7 S., longitude 49° 35’ .7 W. At this time the sun was observed as 
follows: Watch 45 52™ 278; C-W 2 47™ 17s; chronometer slow 12™ 28°; corrected 
observed altitude 18° 16.5’. Required the line of position. ed 
hm 8 
Se ee ae a Se ee ee 4 52-27 
Ca Wie eee 2 47 17 
@hronifaees. ts . 7 39 44 
CONC aay Fy ST (+)12 28 
G. C. T. 26 March__.- 19 52 12 
Pre. ee ee (—)5 41.1 
GAGE Dy aha 2 oR Ei 19 46 30.9 b, takes the same name as the latitude. 
Subiractess! Wo Fee 12 
Ce WA ee eo ae =7 46 30.9 W. 
CARY Glee ce bee iets ere ee RYO oe — Gero vane 
Assumed long... (—)49 37.7 W. 
MELA 2 ees a ee sa ge 67° 
Toosiey 2221 ONE 
ols 633 02.158. A 21159 C 103 Z’ 39.55 
d+630 41.1’ B 29216 D 227 Z’"’ 65.02 
% A+B 50375 | C+D 330 Z 104.5 S. and W. 
h,18° 16. 2’ 
h,1i8 165 
a=0. 3’ towards. 
Case Il (L. H. A. between 90° and 270°) 
On May 15, 1928, about 8 p. m. the U.S. 8. Mississippi making passage from 
Hampton Roads to Liverpool, while in D. R. position 40° 43’ N., 68° 30’ W., 
observed the star Vega as follows: W 75 86™ 12; C-W 45 59™ 128; chron. 1= 15 
slow. ‘True alt. 14° 50.5’. 
bm 8 h m 8 
NRE A DIC tae ROOM Mes 5 al or, G. C. T. 16 May 0 36 25 
OV eco Se ep UA) a oa 4 59 12 -—_———— 
c Sees G.H. A.16 May 314° 49/6 
heron Facess ooo 12 35 24 Corr. 0 36™ 9 01.5 
C. Cc Sremh ahah ig aM os are cide Tuk te Cr) 1 01 Corr. 258 6.3 
MGTENG May o-oo) 0 36 25 soa ne 
RGngis: Gare. -: 15 33 49.7 G. H. A. 323 57.4 W. 
OTe Gre Crepe byes te 6.0 
as Fle Sp 16 10 20.7 b, takes the opposite name to the lati- 
ey Aegis 6 oo oe 18 34 31.3 tude and d+ 6 is always subtracted. 
SSS SSS Z, is always obtained by subtraction. 
US IE Me a" saa 21 35 49.4 W. 
Oran cer tees Poo 8 =323° 57.4’ W. 
Wessun long. 222.2 (—)68 57.4 W. 
I Geel (ery), re eer By An ioe 255° W. (cr 105° E.). 
Majetree ecco Mu 180 (illustrates note 13 6). 
LEE 1 a A is) 
ae BSovaz 7" Ne 
L..41° b16 34.8 S. A 16461 C 137 Z’ (—)22.2° 
d+b22 07.9 +B 42396 Dyess 5 Zl" 73.5 
A+B 58857 § C+D 528 Z 51.3 N. and E. 
h.14° 56.7’ 
Aolt 50.5 
a=6.2 (away). 
ge 9 
