2004. 46 с. This document has been prepared in order to present all
pertinent information regarding the practical procedures of
magnetic compass adjustment in one text. As such, it treats of the basic principles of compass deviations and their correction,
and not of the details of particular compass equipment.
Although this text is presented as a systematic treatise on compass adjustment, ship's personnel who are inexperienced with
compass correction will find sufficient information in Chapters I and XIV to eliminate compass errors satisfactorily without
intensive study of the entire text. Reference should also be made to figure 318 for condensed information regarding the
various compass errors and their correction.
In this handbook, the term compass adjustment refers to any changes of permanent magnet of soft iron correctors whereby
normal compass errors are reduced. The term compass compensation refers to any change in the current supplied to compass
compensating coils whereby the errors due to degaussing are reduced.
The basic text is the outgrowth of lecture notes prepared by Nye S. Spencer and George F. Kucera while presenting courses
of instruction in adjustment and compensation during World War II at the Magnetic Compass Demonstration Station, Naval
Operating Base, Norfolk, Virginia.
magnetic compass adjustment in one text. As such, it treats of the basic principles of compass deviations and their correction,
and not of the details of particular compass equipment.
Although this text is presented as a systematic treatise on compass adjustment, ship's personnel who are inexperienced with
compass correction will find sufficient information in Chapters I and XIV to eliminate compass errors satisfactorily without
intensive study of the entire text. Reference should also be made to figure 318 for condensed information regarding the
various compass errors and their correction.
In this handbook, the term compass adjustment refers to any changes of permanent magnet of soft iron correctors whereby
normal compass errors are reduced. The term compass compensation refers to any change in the current supplied to compass
compensating coils whereby the errors due to degaussing are reduced.
The basic text is the outgrowth of lecture notes prepared by Nye S. Spencer and George F. Kucera while presenting courses
of instruction in adjustment and compensation during World War II at the Magnetic Compass Demonstration Station, Naval
Operating Base, Norfolk, Virginia.