COMPASS COIL INSTALLATIONS 



B. Compass Coil Installations 



85 



115. Cardinally arranged iron core coils. — Pictures of the type 

 "B" and type "B Modified" compass compensating coils are presented 

 in figures 39 and 40. It will be observed that these installations pro- 

 vide three components of coil correction, as discussed above. The 

 heeling (H) coil about the binnacle creates its effect vertically across 



Figure 39. — Compass compensating coils (type "B") mounted on Navy standard No. ] 



binnacle. 



the compass so as to compensate the vertical component of the de- 

 gaussing field. The Flinders har (B) coil creates its effect fore-and- 

 aft across the compass, and the sphere (C) coils create their effect 



