The Compass Errors

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• • • • Compensation Deviation often greater than 10º. Special magnets (compensators) installed in compasses to reduce error. Most compasses come with instructions. Can still have significant deviation error after compensation.
+W T V M D C Computing <strong>Compass</strong> Corrections True Heading Variation on Chart Magnetic Heading Deviation <strong>Compass</strong> Course 000 015 W 015 005 W 020
Page 1 and 2: Positioning and Navigation Systems
Page 3 and 4: • • Magnetic Compass The magnet
Page 5 and 6: Parts of a Compass Constructed of n
Page 7 and 8: Parts of a Compass Lubber line pins
Page 9 and 10: Parts of a Compass Spherical bowl w
Page 11 and 12: Parts of a Compass Compensation sys
Page 13 and 14: Hand Bearing Compass Styles Front/T
Page 15 and 16: Compass Errors Deviation and Variat
Page 17 and 18: • Example: If the variation was 0
Page 19 and 20: • • • • • • • • •
Page 21 and 22: • Examples (2 & 3) If the variati
Page 23 and 24: • • • Deviation: Ship-Specifi
Page 25: • • Measuring Deviation Yoursel
Page 29 and 30: • • • • • “Swinging Swi
Page 31 and 32: • • • • Example Way to Know
Page 33 and 34: Electronic Steering Compasses Featu
Page 35 and 36: All this sound complex? Perhaps, bu
Page 37 and 38: • The Gyro-compass (cont’d) - -
Page 39 and 40: - Shipboard Compasses If the gyroco

The Compass Errors

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