1150 THE BELL SYSTEM TECHNICAL JOURNAL, SEPTEMBER 1957 



wt 



10 



20 



30 



40 50 60 



a IN DEGREES 



70 



80 



90 1 



Fig. 12 — Variation of the tension factor for recovery with the critical angle a. ■ 



w 



h 4 



2 3 4 5 



SHIP SPEED IN KNOTS 



yig 13 _ Variation of exact and approximate tension factors for recovery 

 of cable No. 2. 



