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varies with the courses of the ship is equal to the effects of the magnetic material in the ship is opposite to the effects of the magnetic material in the ship is to the right or left of the magnetic material"
reduce the variation as much as possible reduce the deviation as much as possible reduce the magnetic dip as much as possible allow the compass bowl to swing freely on its gimbals"
If the blue ends of the magnets are aft, and the fore-and-aft tray is at the top,you should addsome magnets. if the blue ends of the magnets are aft you should lower the fore-and-aft tray. If the blue ends of the magnets are aft, and the fore-and-aft tray is at the top, you shouldreverse the magnets. If the blue ends of the magnets are forward, and the fore-and-aft tray is at the bottom, youshould add some magnets."
All repeaters The magnetic compass The repeater at the emergency steering position The repeaters on the bridge"
the magnetic cours gyro compass cours eithe neither"
Quadrantal soft iron spheres The Flinders bar Bar magnets in the binnacle The heeling magnet"
Fore-and-aft and athwartships magnets Dip needle and heeling magnet Heeling magnet and Flinders bar Flinders bar and quadrantal spheres"
Winds and currents may deviateyour vessel from your desired course A magnetic compass bearing has less uncertainty than a transit of objects marked on thechart A vertical sextant angle and a bearing has greater certainty than two bearings The prudent navigator should choose techniques with greatest certainty to his fix"
Relative TRUE Compass Magnetic"
The correctors about the binnacle The deviations The sectors of unsteadiness The sectors of sluggishness"
varies with the courses of the ship is equal to the effects of the magnetic material in the ship is opposite to the effects of the magnetic material in the ship is the deflection of its card to the right or left of the magnetic material"
geographical position speed heading longitude"
The magentic compass is compulsory on my vessel The magentic compass is prone to error The magentic compass is always placed inside steel constructions The magentic compass needs to be calibrated to compensate for local magnetic distortion"
true degrees magnetic compass degrees relative degrees isobaric degrees"
the magnetic compass the gyro compass The repeater at the emergency steering position The repeaters on the bridge
deviation and variation deviation variation magnetic anomalies ( local disturbances )"
Magnetic compass table Magnetic meridians Isogonic lines Variation is not indicated on small-scale nautical charts"
varies depending upon the bearing used is the angular difference between magnetic north and compass north is published on the compass rose on most nautical charts is the angular difference between geographic and magnetic meridians"
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