exx 
APPENDIX 
EXPERIMENTS AT NORTHFLEET, May 4, 1819. 
One of Captain Kater’s Azimuth Compasses being taken on Shore, was 
so placed as to have the Ship and a distant Steeple on the opposite side of the 
River in one, whence the true Magnetic Bearing of the Steeple from the 
Ship was found, on repeated Trials, N 83° 30' E. The Ship’s Head was 
then warped successively on each Point of the Compass, (excepting on the 
West, W. by S., and W. S. W., the Wind and Tide not permitting her to 
remain on those Points,) and the Bearing of the Steeple noted by the Ship’s 
Standard Compass. 
Ship’s Head 
Bearing of 
Steeple 
Difference from | 
he true Magnetic 
bearing | 
Ship’s Head 
Bearing of 
Steeple 
Difference from 
he true Magnetic 
bearing 
North 
N 83 45 E 
o / 
0 15 E. 
South 
N 84 00 E 
O / 
0 30 E 
N. by E. 
N 82 30 E 
1 0 W. 
S. by W. 
N 84 30 E 
1 00 
N.N.E. 
N 81 30 E 
2 0 
s.s.w. 
N 84 30 E 
1 00 
N.E. by N. 
N 80 50 E 
2 40 
S.W. by S. 
N 85 00 E 
1 30 
N.E. 
N 79 15 E 
4 15 
S.W. 
N 85 15 E 
1 45 
N.E. by E. 
N 79 25 E 
4 05 
S.W. by W. 
N 86 30 E 
3 00 
E.N.E. 
N 79 30 E 
4 0 
W.S.W. 
E. by N. 
N 78 49 E 
4 41 
W. by S. 
Points not 
observed 
| East 
N 78 49 E 
4 41 
West 
E. by S. 
N 79 45 E 
3 45 
W. by N. 
N 87 45 E 
4 15 
E.S.E. 
N 80 15 E 
3 15 
W.N.W. 
N 87 00 E 
3 30 
S.E. by E. 
N 80 45 E 
2 45 
N.W. byW. 
N 86 30 E 
3 00 
S.E. 
N S3 00 E 
1 30 
N.W. 
N 86 15 E 
2 45 
S.E. by S. 
N 82 15 E 
1 15 
N.W. by N. 
N 85 55 E 
2 25 
S.S.E. 
N 83 15 E 
0 15 
N.N.W. 
N 85 45 E 
2 15 
S. by E. 
N 84 00 E 
0 30 E. 
N. by W. 
N 84 i5iE 
2 45 
Dip of the Needle 70° 30' 
N. 
