3103F.9 Safety Factors for Mooring Lines
Safety factors for different material types of mooring lines are given in Table 31F-3-12. The safety factors should be applied to the minimum number of lines specified by the mooring analysis, using the highest loads calculated for the environmental conditions. The minimum breaking load (MBL) of new ropes is obtained from the certificate issued by the manufacturer. If nylon tails are used in combination with steel wire ropes, the safety factor shall be based on the weaker of the two ropes.
|Steel Wire Rope||1.82|
|Polyamide Tail for Wire Mooring Lines||2.50|
|Other Synthetic Tail for Wire Mooring Lines||2.28|
|Polyamide Tail for Synthetic Mooring Lines||2.75|
|Other Synthetic Tail for Synthetic Mooring Lines||2.50|