92 
GREENLAND VOYAGE. 
Course by 
Binnacle 
Compass. 
DEVIiTIOM. 
Course by 
Binnacle 
Compass. 
Detiatiom. 
Obs ved. 
er 
Approxi¬ 
mate. 
Observed. 
Approxi. 
mate. 
N. 
— 6* 
74 E. 
s. 
+ 16 ° 
164 E. 
N A E. 
8 
8 
SAW. 
16 
174 
NNE. 
94 
84 
SSW. 
17 
174 S. 
NE‘5N. 
94 
8 
SWAS. 
17 
174 
NE. 
8 
7 | 
sw. 
164 
164 
NE A E. 
7 
7 
SW AW. 
15 
154 
ENE. 
of 
6 
wsw. 
13 
144 
E A N. 
44 
WAS. 
11 
124 
E. 
O 
2 S. 
w. 
* • • 
101 
E 6 S. 
0 
?E. 
WAN. 
7 
7 1 
ESE. 
+ 3 
4 
WNW. 
... 
44 
SEAE. 
74 
7 
NWAW. 
If 
SE. 
11 
10 
NW. 
0 
IN. 
SEAS. 
12 
124 
NWAN. 
— o 
— /V 
34 
SSE. 
14 
141 
NNW. 
... 
5 
SAE. 
154 
1 r % 1 
NAW. 
44 
64 
This Fable of deviations is rather an uncommon 
one ; the points of change are E. § S., and 
NW. -L W.; or S. 82° E. and N. 49° W. The 
maximum error, additive to the variation, occurs 
on a SSW. course, and amounts to 17v degrees; 
while the maximum subtractive error, which oc¬ 
curs on a NNE. course, is only 8-j. degrees, though, 
in most ships, these two denominations are pretty 
nearly equal *. 
* I attribute the peculiarities, as well as extraordinary 
quantity, of the deviation in the Baffin, to the influence of an 
