Mooring | Materials | Application | Program | Links | ||||
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A criterion which is important in the long term use of a mooring system is the susceptibility to fatigue. As can be seen from the graph to the right polyester, like the other synthetic mooring materials, has a better fatigue acceptance than steel.
The better fatigue life of synthetic mooring materials can justify using these types of lines for a long term installation, both economically and technically. With a better fatigue life and elastic properties the probability that a mooring line fails is lower than with a steel line. With less mooring lines to replace the overall economic picture will be better with an initial higher investment and lower operating costs as can be gained with synthetic mooring lines.
The fatigue life of some synthetic materials can be severely reduced if the lines touch the seabed or other objects. If sand enters the mooring line’s structure, the line will over many load cycles wear and eventfully fail. For these reasons steel chain or steel wire are used at either ends of the mooring line. |
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MB Load vs. | ||||||||
Weight vs. | ||||||||
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