COMPENSATION CHECK-OFF LIST 81 



(b) Should the deviations caused by degaussing be unsatis- 

 factory, part or all of the foregoing procedure will 

 have to be repeated until the errors are split between 

 opposite headings. 



110. The above <'li<ck-off Jlxf describes a step-by-step pi'oce(hire foi- 

 compensation of the different degaussing effects. It will be noted 

 that the compensation procedures for the general types of com- 

 pass coil installations are presented; and, the adjuster will be gov- 

 erned in his selection of the appropriate procedure by the type of 

 compass compensating coil installation on the ship. 



Further details concerning the different type compass compensat- 

 ing coils, the general principles of degaussing compensation, sche- 

 matic and installation wiring arrangements, principles of operation, 

 etc., are to be found in chapter XI. 



Frequent, careful observations should be made to determine the 

 constancy of deviations due to degaussing, and the results system- 

 atically recorded. Significant changes in deviations due to degauss- 

 ing will indicate the need for recompensation. 



