188 



Capt. Belaveuetz on the Magnetic Character [April 27, 



(2) The great diminution of horizontal force, especially near the south 

 end. 



. (3) The very great increase of vertical force near the south end on the 

 upper deck, and the great diminution of the vertical force in descending. 

 From these we infer that there would be a very large heeling error to 

 windward at/, and a large heeling error to leeward on the main deck. 



(4) The very large amount of semicircular deviation, both as regards 

 S3 and (, the last having a large negative value in consequence of the 

 port-side of the vessel having been to the south in building. 



8. The best place for the compass is point b, near which the standard 

 compass was afterwards fixed. 



9. "We also see that at the point I the deviations exceed 180. It is to 

 be observed, however, that from the armour-plating not being fixed, we 

 must not accept this as an instance of what the deviation would be in a 

 completed vessel. 



10. The 'Pervenetz' was launched on the 21st of May, and on the 

 same day moved to the Victoria Decks. On the way and in the dock 

 the deviations were observed at the point b, and the following values of 

 33, (, SD were obtained : 



33= +-639, (5 = --136. S)=-100. 



1 1 . On the 22nd of May she was moved in the dock, and the following 

 observations were made at the point b : 



from which the following values of the coefficients are derived : 

 33= + 736, (= '122, SD='126, X='806. 



12. Observations at the other positions showed that the assumed values 

 of X and 2) did not differ much from the truth. 



13. The vessel lay in the Victoria Docks till the 27th of July, with her 

 head very nearly N. 55 E. At the end of that time the coefficients were 



