GAMA 98® polyester rope

GAMA 98® polyester rope tethers are made from high efficiency sub-rope cores laid parallel within an outer braided jacket. Each sub-rope is computer monitored during tether manufacture to ensure all sub-ropes have equal tension and length. Typically, GAMA 98® ropes include up to 12 sub-ropes, each sub-rope being of a long lay length 8 x 1 construction, which gives a 100% torque free rope.

The fatigue life of polyester rope is typically quoted as being approximately 80 decades superior to steel wire rope. The fatigue life curve of GAMA 98® rope was established during the durability of polyester in Joint Industry Projects.

Key Deepwater Projects using GAMA 98® polyester rope tethers for major projects such as the Tahiti spar for Technip (Operator: Chevron), Thunder Hawk semi-submersible for SBM Atlantia (Operator: Murphy) and recent FPSO project for APL/BW Offshore in the Gulf of Mexico.

Moduline® polyester rope

Moduline¨ polyester ropes are made from high efficiency 3-strand sub-rope cores laid parallel within an outer braided jacket desgned for mobile drilling unit (MODU) operations . Moduline¨ ropes are manufactured from equal numbers of S & Z (left and right hand) lay sub-ropes to provide a torque neutral construction.

GAMA 98® polyester rope with Dyneema®

GAMA 98® polyester rope with Dyneema® for mobile drilling unit (MODU) operations and also Submerged Turret Buoy  installations. The rope is manufactured from high efficiency sub-ropes cores (strength member) laid parallel within an outer braided jacket (non-strength member).

The sub-cores are high efficiency eight strands braided Dyneema ropes. The external jacket is a 32-carrier twill polyester braid. This construction is torque balanced and is one of the strongest rope constructions currently available. The breaking load is the same whether the rope is wet or dry and considerably higher than nylon or polyester size for size. The characteristics of high strength, low weight, make this rope easy to handle with consequent reduction in operational costs. The polyester jacket confers to the rope an excellent resistance to abrasion.