ROUTE SELECTION AND CABLE LAYING 



309 



Fig. 9 — Cable payout over the stem. 



ironing boards. (An ironing board is a curved shoe placed adjacent to 

 the cable drum and spring loaded so that it will force the repeater to 

 conform to the curvature of the drum as it goes on.) 



The forward port and starboard draw-off gear sheaves were replaced 

 with larger ones 7'0'' in diameter which were made traversable. The 

 aft hold-back gear, of the double sheave type, was also replaced with 

 units having 7'0" sheaves. 



Fig. 8 shows a general view of the modified after cable gear, and the 

 7-ft stern sheave may be seen in Fig. 9. A line schematic of the gear will 

 be found on Fig. 10. 



Roller type fairleads shaped into arcs of minimum 3^' radius were 

 fitted at each cable tank hatch, with smaller roller guides at convenient 

 points to assure fair lead of the cable from the tanks to the cable ma- 

 chinery. Electric hoisting gear was provided for the crinoline in each 

 tank as it was necessary to raise the crinoline whenever a repeater left 

 the tank. 



