The ropes, cables, sails and fishing gears which are made of UHMWPE fibers are fit for the ocean engineering. The breaking length which are caused by the rope’s own weight is 8 times of the steel rope and 2 times of the aramid rope. The UHMWPE fiber ropes can be used as the anchor ropes for the super tankers, marine platforms and lighthouses, and the UHMWPE can effectively avoid the usual problems such as the reduction of the strength, the fracture of the ropes, the frequent replacements which are cause by the rust and corrosion of the steel ropes and nylon ropes.