taken in the proper design and application of juncture techniques. The 

 elongation of synthetic rope is caused by the braiding and plaiting of the 

 rope. New developments in synthetic fiber nnay soon eliminate the elonga- 

 tion problem. Polyurethane coverings on the rope would eliminate the 

 problem of fish bites. Because synthetic ropes do not appear to be well 

 enough advanced for deep sea mooring systems, they were not selected for 

 use on the surface plant mooring system. 



Two types of chains are feasible for use on surface plant mooring 

 systems; 1020 carbon steel and 8620 high-strength steel alloy chain. The 

 latter was chosen because of its high reliability. It was recommended that 

 the chain be proof-tested at half the breaking strength and rated at half the 

 proof- test value. 



Angle of Mooring Leg Tangent at Anchor (degrees) 

 Figure 12. Effect of angle of anchor pull on holding power. 



45 



