PRINCIPLES OF NAVAL ENGINEERING 



47.40 

 Figure 5-13.— Stern tube stuffing box and gland. 



laminated resin bonded composition or strips of 

 composition faced witli rubber or synthetic rub- 

 ber compounds as wearing materials. The lami- 

 nated strips are cut and installed in the bearing 

 shell so as to present the end grain to the shaft. 

 In naval craft other than major combatant ships, 

 resin bonded composition bearings or full molded 

 rubber faced bearings are used, 



PROPULSION SHAFTING 



The propulsion shafting, which ranges in 

 diameter from 18 to 21 inches for small twin- 

 screw destroyers to approximately 30 inches for 

 large four-screw carriers, is divided into four 

 functional sections: the thrust shaft, the line 



LENGTH OF BEARING AND NUMBER OF 

 STEPS TO S 



STRUT, 



,BUSHING 



47.41 



Figure 5-14.— Strut bearing. (A) Longitudinal cutaway view. (B) Cross-sectional view. 

 (C) Arrangement of rubber stripping in the bearing bushing. 



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