According to mechanical characteristics of highline cable of alongside replenishment system at sea, two mathematical methods for static analysis of the highline cable under its own weight are investigated: catenary method, which is the exact solution, and parabolic method, which is the approximate solution but simpler to calculate. A model consisting of two sections of catenary is established for the analysis of the highline cable under a concentrated load. The expressions of the length and the tension of the highline cable are derived, and the result of each section is obtained.
In the process of that ocean-going ships were replenished on the sea, the control of constant tension for the overhead cable is very important. This paper redesign and simulation of the hydraulic control system of a foreign Highline constant tension winch, based on analysis of the control system of which. What will provide the experience of the design on the highline constant tension control hydraulic winch for replenishment on sea.
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