IN WOOD-BUILT AND IRON-BUILT SHIPS 
No 
28. 
29. 
Ship’s name 
Simoom. 
Place of observation 
Portsmouth. 
Simon’s 
Town. 
Time of observation 
1852, September. 
1853, October. 
Index correction 
+ 0 
0 yi 
+ 1° 
47' 
Approximate modulus 
•368 
•235 
Approx, starboard angle ... 
30>’ 
•20 
31P-03 
Observed 
Observed 
deviation 
Residual 
deviation 
Residual 
uncor- 
error. 
uncor- 
error. 
rected. 
rected. 
P 
r 0 
O / 
— 7 40 
(-6 14) 
O / 
— 4 0 
( + 6 20) 
1 
— 1 35 
+ 1 50 
+ 0 10 
+ 1 53 
2 
+ 4 30 
+ 3 47 
+ 5 30 
+ 4 36 
3 
+ 9 20 
+ 4 31 
+ 8 30 
+ 5 4 
4 
+ 13 15 
+ 4 31 
+ 10 40 
+ 4 53 
5 
+ 17 10 
+ 4 47 
+ 11 0 
+ 3 10 
6 
+ 18 10 
+ 2 38 
+ 11 20 
+ 1 49 
7 
+ 19 15 
+ 1 6 
+ 11 45 
+ 0 58 
8 
+ 20 20 
( + 0 16) 
+ 10 30 
(-1 3) 
ns 
9 
+ 19 45 
-1 26 
+ 8 55 
— 2 53 
10 
+ 19 10 
-1 40 
+ 7 25 
-4 6 
09 
11 
+ 16 50 
— 4 0 
+ 6 30 
— 4 13 
12 
+ 14 50 
— 4 34 
+ 5 15 
— 4 11 
•i 
13 
+ 12 50 
— 4 22 
+ 4 45 
— 2 47 
o 
14 
4-10 45 
—3 36 
+ 4 30 
-1 10 
15 
+ 8 40 
-2 17 
+ 1 45 
— 1 33 
■s ^ 
16 
+ 7 20 
( + 0 8) 
+ 0 50 
( + 0 4) 
17 
+ 4 20 
+ 1 9 
- 1 0 
+ 0 51 
ci 
18 
+ 1 20 
+ 2 17 
- 2 5 
+ 2 23 
-s 
19 
— 1 40 
+ 3 23 
— 4 10 
+ 2 50 
20 
— 4 40 
+ 4 18 
— 5 40 
+ 3 42 
P4 
21 
- 8 10 
+ 4 27 
— 7 40 
+ 3 44 
P4 
22 
— 11 40 
+ 4 6 
- 9 20 
+ 3 45 
23 
-16 10 
+ 2 13 
— 11 20 
+ 3 1 
24 
— 20 20 
(-0 2) 
— 15 20 
(-0 13) 
25 
— 22 17 
— 0 52 
-16 30 
-1 8 
26 
— 24 15 
-3 11 
— 17 0 
— 1 55 
27 
-25 10 
-4 6 
— 19 0 
— 4 43 
28 
— 24 50 
— 5 12 
— 18 20 
-5 20 
29 
— 22 20 
— 4 54 
-16 20 
— 5 14 
30 
— 18 30 
— 3 55 
— 11 15 
— 2 1 
31 
— 12 30 
-1 19 
— 7 40 
— 0 48 
Quadrantal coefficients ...■ 
+ 4 38 
— 4 23 
+ 4 23 
— 4 42 
+ 4 29 
— 4 11 
+ 4 3 
— 4 14 
Mean quadrantal coefficient 
+ 4 31 
+ 4 14 
True modulus 
175 
•240 
True starboard angle 
30>’-37 
3P*12 
MDCCCLVI 
L 
