the magnetic compass

11

The Magnetic CompassThe Magnetic Compass

Floating PinFloating Pin Marine- Marine-

floating cardfloating card Binnacle Binnacle

MountedMounted Hand bearingHand bearing

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22

The Magnetic CompassThe Magnetic Compass

Compass Compass card with card with points of the points of the compasscompass

We usually We usually use 360 use 360 degree degree compasscompass

33

The Steering CompassThe Steering Compass

Binnacle or Binnacle or dash mounteddash mounted

Bulkhead Bulkhead mountedmounted

QuickTime™ and aTIFF (Uncompressed) decompressorare needed to see this picture.



QuickTime™ and aTIFF (Uncompressed) decompressorare needed to see this picture. QuickTime™ and aTIFF (Uncompressed) decompressorare needed to see this picture.


44

The Hand Bearing CompassThe Hand Bearing Compass

From From companionwaycompanionway

Charted Charted obvious targetsobvious targets

Good angleGood angle Bearing on Bearing on

beam lastbeam last





55

The Electronic CompassThe Electronic Compass

FluxgateFluxgate Hand bearingHand bearing AutopilotAutopilot


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66

Compass Error Compass Error - Variation- Variation

77


Earth’s Earth’s magnetismmagnetism

Varies from Varies from place to placeplace to place

See compass See compass roserose

88


99

Compass Error - DeviationCompass Error - Deviation

Boat’s Boat’s magnetismmagnetism

Metallic Metallic objectsobjects

Find Find differencedifference

Deviation cardDeviation card

1010


1111


1212


Boat’s Boat’s magnetismmagnetism

Metallic Metallic objectsobjects

Deviation cardDeviation card

1313

Compass Compass CorrectionCorrection

1414

Compass Compass CorrectionCorrection

the magnetic compass

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