The Magnetism of Ships And the Mariners Compass Being a Rudimentary Expositio
The Magnetism of Ships And the Mariners Compass Being a Rudimentary Expositio
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N. W. And S. S. E. ; but at the Cape, her compass would have errors on these points. Before the ship struck on the rocks off Point Danger, she had been steering a S. S. E. Compass course, as was stated by the surviving helmsman ; and there is ground for our belief, that the officers who perished had placed * See Appendix K.
AND THE MARINER S COMPASS.
137 too much confidence in the 8th practical rule for ascer- taining compass deviations ; which states, that the points of no deviation, when once... ascertained, may be regarded as constant.
The following Table exhibits the Recruit's Compass Deviations, when upright, and when inclined 8 both ways.
Correct Magnetic Courses.
Deviations of Compass.
Deviations with Iron apparatus applied to partially correct Com- pass, when ship upright.
When vessel upright.
When vessel 8 to Port.
When vessel 8 to Starbd.
N.
4. 15 East.
2. 6 East 9. East.
1. West.
N. ByE.
11. 15 5. 15 13.
0.
N. N. E.
13.
8. 30 19. 30 .
2. 30 East.
N. E. By N.
15. 30 10. 15 20. 18 3.
What to read after The Magnetism of Ships And the Mariners Compass Being a Rudimentary Expositio?
You can find similar books in the "Read Also" column, or choose other free books by William Walker to read onlineMoreLess
To quickly assess the difficulty of the text, read a short excerpt:
N. W. And S. S. E. ; but at the Cape, her compass would have errors on these points. Before the ship struck on the rocks off Point Danger, she had been steering a S. S. E. Compass course, as was stated by the surviving helmsman ; and there is ground for our belief, that the officers who perished had placed * See Appendix K.
AND THE MARINER S COMPASS.
137 too much confidence in the 8th practical rule for ascer- taining compass deviations ; which states, that the points of no deviation, when once... ascertained, may be regarded as constant.
The following Table exhibits the Recruit's Compass Deviations, when upright, and when inclined 8 both ways.
Correct Magnetic Courses.
Deviations of Compass.
Deviations with Iron apparatus applied to partially correct Com- pass, when ship upright.
When vessel upright.
When vessel 8 to Port.
When vessel 8 to Starbd.
N.
4. 15 East.
2. 6 East 9. East.
1. West.
N. ByE.
11. 15 5. 15 13.
0.
N. N. E.
13.
8. 30 19. 30 .
2. 30 East.
N. E. By N.
15. 30 10. 15 20. 18 3.
What to read after The Magnetism of Ships And the Mariners Compass Being a Rudimentary Expositio?
You can find similar books in the "Read Also" column, or choose other free books by William Walker to read onlineMoreLess
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