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Beat Bending Fatigue with BOB* Rope Construction Heavy marine cyclic bend-over-sheave (CBOS) applications call for rope constructions with high fatigue resistance performance and long-term creep resistance. Rope failures can cause considerable vessel downtime cost. Cortland's exclusive Braid Optimized for Bending (BOB®) HMPE fiber rope construction was developed specifically for use where ropes cycle continuously back-and-forth across sheave applications. BOB® offers superior cyclic fatigue resistance performance, especially in dynamic bend-over-sheave applications, as well as excellent long- term creep resistance. BOB® Bend Over Sheave Test Data • High strength • Soft hand •Torque free • Easy splicing • Replacement for wire rope deep water lifting • Use on drum and traction winches • Active heave compensation systems • Heavy lift slings • High fatigue applications •Tether applications Aramid wire with braided polyester jacket HMPE with HMPE with Tests were performed on a 9" (229mm) diameter steel sheave with 3/4" (18mm) diameter ropes. Test load was 7,500 lbs (3,500kgs). All specimens were cycled at a rate of 6 cycles per minute. All tests were run continuously until complete rope failure

BOB® Rope Construction The patented blend of high performance fibers, available in either 12 strand or 12x12 strand designs, features high strength, low stretch and ultra low creep to maximize durability in bending situations. These features translate into less downtime and cost efficiencies in situations such as seismic tow arrays, where rope failures cause array recovery downtime and possible data loss. BOB® ropes can be supplied with multiple coating finishes to suit specific applications. For more information email Specific gravity Melting point Critical temp. Fiber water absorption *...