API TR 2FC-2 pdf download Fatigue TN Curves for Chain, Wire, and Polyester Mooring Lines (Including Corrections for High-tension Ranges) 4 Polyester Rope Fatigue Curves In API 2SM, First Edition, a regression ft to the results from 11 fatigue tests on polyester ropes, regarded as valid tests, were used to defne the fatigue curve for polyester rope presented in Figure...