A Treatise on Compass Compensation: A Textbook for Academies and Colleges, and a Reference Manual for Navigating Officers |
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Page 164
... red ends in the direction of R from B ; and then remove the remaining deviation POB with the fore - and - aft magnets , red ends in the direction of B from P. Fig . 39 In certain instances it will be found desirable first to reduce the ...
... red ends in the direction of R from B ; and then remove the remaining deviation POB with the fore - and - aft magnets , red ends in the direction of B from P. Fig . 39 In certain instances it will be found desirable first to reduce the ...
Page 167
... red ends aft , swing card to the left 56 ° , so as to make the compass head- ing 326 ° , showing 16 ° westerly error . Then , with athwart- ship magnets , red ends to port , reduce the.
... red ends aft , swing card to the left 56 ° , so as to make the compass head- ing 326 ° , showing 16 ° westerly error . Then , with athwart- ship magnets , red ends to port , reduce the.
Page 168
... red ends forward , swing the card to the left 15 ° , so as to make the compass heading 65 ° , thus showing 15 ° westerly error . Then , with athwartship magnets , red ends to port , reduce the deviation to zero , completing the ...
... red ends forward , swing the card to the left 15 ° , so as to make the compass heading 65 ° , thus showing 15 ° westerly error . Then , with athwartship magnets , red ends to port , reduce the deviation to zero , completing the ...
Contents
The Ship as a Magnet | 1 |
The Soft Iron of a Ship | 29 |
Analysis | 73 |
Copyright | |
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Common terms and phrases
angle ashore athwartship magnets azimuth binnacle blue pole causes circle of deviations compass course Compass heading compass needle compass record compensation component correction correctors corresponding compass deck degree of heel DYGOGRAM earth and ship earth's force east and west east or west easterly effect equation exact coefficients example Flinders bar force H force of earth fore-and-aft magnets formula gyro heading Deviation heeling adjuster heeling error heeling magnet inches latitude local hour angle lubber line magnetic course magnetic heading magnetic north minus navigator netic observations parameter pilot house placed pole position quadrantal deviation quadrantal error quadrantal spheres red ends semicircular deviation ship swings ship's head sin z standard compass starboard steel steering subpermanent magnetism sun bears swing tion true bearing variation versin vertical force vertical iron vertical soft iron vessel viation vibrations westerly deviation zero