630 
STAFF COMMANDER E. W. CREAK ON THE DEVIATIONS OF THE 
Table I.—Values of the Constant Parameters P and c, Q and f at Standard 
Compass Positions in Her Majesty’s Ships (continued). 
Geographical 
position. 
Date of 
1 observation. 
Original 
P. 
Corrected 
P. 
C 
r-tan 6 
A 
in England. 
C. 
Original 
Q. 
Corrected 
Q. 
/ 
tan 9 
in England. 
/• 
1 
k 
•tied an 
d iron 
ships casi 
id witl 
ivood. 
Comus —Built S. 11° W 
Distance of standard from stern 50 feet, from iron mast 7f feet. 
Sheerness . . . 
^ 14 xi. 79 
+ •246 
+ •089 ] 
+ •034 
-•029 
-•010 j 
-•004 
55 ... 
18 xii. 79 
+ -234 
+ •009 
+ 5° 7' / 
+ •041 
+ •022 
— 0° 35'/ 
Simon’s Bay, C. 
Hood Hope . 
20 iii. 80 
-•042 
+ •038 
Hong Kong . 
12 vii. 80 
-•042 
+ •038 
Singapore. . 
13 xii. 81 
-•017 
+ -035 
Carysfort.—B uilt S. 11° W. Distance of standard from stern 50 feet, from iron mast 7 - 9 feet. 
Sheerness . . 
5 x. 80 
+ •262 
+ •111 ] 
+ •044 
-•014 
55 ... 
6 x. 80 
-•099 
+ 6 ° 23'/ 
-•024 
Simon’s Bay, C. 
Good Hope . , 
1 iv. 81 
-•133 
+ •030 
Kobe, Japan . 
10 xi. 81 
-•133 
• • 
+ •007 
Cleopatra.—B uilt S. 11° W. Distance of standard from stern 
49J? feet, from iron mast 6 f feet. 
Plymouth . . . 
15 ix. 80 
+ •057 
+ •082 j 
+ •032 
+ •050 
•• 
5, ... 
17 ix. 80 
-•033 
+ 4° 43'/ 
+ •031 
Monte Video . 
31 xii. 80 
-•074 
, , 
-•028 
Hong Kong . 
20 xii. 81 
— •074 
+ •039 
Composite vessels. 
Ruby.—B uilt N. 3° W. 
Distance of standard from stern 50 feet, from iron mast 6 f feet. 
Sheerness . 
30 vi. 77 
-•486 
+ •077 1 
+ •027 
-■109 
55 ... 
3 vii. 77 
-•086 
+ 4° 25'/ 
-•009 
Gulf of Xei-os 
iii. 78 
-•083 
, . 
+ •003 
Singapore. 
vi. 78 
-•083 
+ •018 
Rangoon . 
x. 79 
-•101 
-•028 
Zanzibar . 
12 iii. 80 
-•076 
-•009 
Gannet.*—B uilt S. 76° E. Distance of standard 
from stern 38 feet. 
Sheerness . . . 
29 iv. 79 
+ •122 
+ •065 j 
+ •024 
+ •139 
55 ... 
30 iv. 79 
-•012 
+ 3° 45'/ 
+ •010 
Coquimbo . 
x. 79 
-•059 
-•032 
Esquimault, V an- 
couver Island . 
vii. 81 
-•059 
-•014 
Albatross.* —Built S. 50° E. Distance of standard from stern 3 1\ feet. 
Sheerness . 
17 xii. 73 
+ •209 
+ •073 ] 
+ 0-29 
+ •100 
55 ... 
20 iii. 74 
-•066 
+ 4° 12'/ 
+ •015 
Rio de Janeiro . 
5 vii. 74 
-•066 
-•017 
Plymouth. . . 
10 x. 74 
-•064 
+ -022 
Taboga. . 
27 x. 75 
-•091 
-•006 
Pisco .... 
15 xii. 76 
-•093 
+ ■002 
Esquimault, Van- 
couver Island . 
29 x. 77 
-•093 
. . 
+ •016 
* Tliese vessels liave wooden masts. 
