Deviation and the Deviascope: Including the Practice and Theory of Compass Adjustment |
Contents
CHAPTER I | 1 |
The Lifeboat Compass | 7 |
Terrestrial Magnetism | 14 |
Copyright | |
20 other sections not shown
Common terms and phrases
abaft the compass adjusting the compass aft magnet athwartship beams athwartship magnet axis axle B₁ B₂ binnacle blue pole bowl caused centimetres centre Co-eff compass bearing compass card compass needle compass north compass position compensated component corrected correctors deflection deflector deviascope deviation due dip circle directive force disturbing force due to hard Flinders bar force H fore and aft gyrocompass gyroscope H.E. due hard iron heeling error due hemisphere high side horizontal force induced magnetism Lambda latitude lines of force lubber line magnetic bearing magnetic force magnetic meridian magnetised magnetometer mean meridian neutral course north end Perim permanent magnetism port produced quadrantal deviation red polarity red pole represents right angles scale reading semi-circular deviation ship ship's head shore soft iron bars spheres starboard swing Tables true azimuth vertical force instrument vertical iron vertical magnet vertical soft iron vibrations westerly deviation