CHARACTER OF THE ARMOUR-PLATED SHIPS OF THE ROYAL NAVY. 
303 
Table IV. — Iron-built Ships, Mercantile Marine. 
Alaxi 
m of semicircular 
deviation 
V B*+C» 
Mean 
force to 
North, 
X 
t 
X 
Coefficients of 
horizontal induction. 
I Part of D from 
Mean 
vertical 
force, 
Heeling 
coefficient. 
windward , 
* 
Heeling coefficients 
from 
9 
tan 0 
9 
t 
Hori 
ital force of ship 
!&+&*■ 
Fore- 
and-aft 
a 
t 
Transvers< 
e 
t 
Fore- 
and-aft 
induction. 
Transverse 
^induction. 
Vertical 
induction 
in trans- 
verse iron 
Vertical 
force and 
induction 
in vertical 
Am 
* 
Direction. 
- 
o 
° i 
° 1 
° i 
o / 
•822 
192 
•984 
1016 
+•008 
-■040 
+0 14 
+ 1 9 
2J 
•392 
213 
•972 
1029 
+•015 
-071 
+0 24 
+2 7 
•332 
213 
i 1-003 
•997 
+•057 
-•050 
+1 40 
+ 1 26 
•217 
228 
•999 
1001 
+•060 
-•060 
+ 1 43 
+ 1 43 
2 
■542 
140 
•914 
1-094 
-•050 
-•122 
-1 33 
+3 50 
. -574 
45iV 
•791 
1-264 
-•072 
-192 
-3 50 
+8 13 
;-4S4 
34£ 
•775 
1-291 
-•082 
-•209 
-4 4 
+8 48 
H [i 
•438 
55 £ 
•897 
1115 
+•066 
-•182 
+0 38 
+7 18 
H 1 
•619 
27 
•892 
1121 
-•038 
-•178 
-4 38 
+9 16 
1 
•189 
139 
■870 
1149 
-•059 
-•201 
-1 57 
+6 39 
1 1-275 
1 22 
+0 35 
+0 47 
l 
H 
•158 
258J 
•816 
1-225 
-•120 
-■248 
-4 8 
+8 44 
1-246 
1 31 
+0 46 
+0 45 
* Me 
force to North (\H) being unit. 
f Earth’s Horizontal force (H) being unit. 
X Earth’s Vertical force (Z) being unit. 
Table of Terrestrial Magnetic Elements. [1864.] 
Place. 
In British absolute units. 
Dip 6. 
Tan 6. 
Horizontal force at Greenwich 
being unit || . 
Horizontal force. 
Vertical force. 
Horizontal force. 
1 Vertical force. 
Lisbon 
4-82 
+ 8-46 
+ 7*89 
+ 8-27 
+ 8-10 
+ 7*29 
-6-43 
+ 7-08 
+ 60 23 
+ 1-76 
+ 1-55 
+ 1-60 
+ 1-49 
+ 1-29 
-1-44 
+ 1*12 
1-26 
+ 2-21 
Gibraltar 
5-09 
5-17 
5*44 
+ 57 9 
+ 57 55 
+ 56 10 
+ 52 20 
1 — 55 8 
+ 48 10 
1-33 
+ 2-06 
Madeira 
1-35 
+ 2-16 
+ 2-12 
Teneriffe 
1*42 
Malta 
5-65 
1*47 
+ 1-90 
— 1*68 
+ 1-85 
Simons Bay, Cape 
of Good Hope 
Yokohama, Japan 
J 4-48 
6-32 
M7 
1-65 
MDCCCLXV. 
f For British absolute units multiply by 3-83. 
I For Foreign absolute units multiply by 1’76. 
2 T 
