This data record defines a nonlinear property of a mooring line. In order to use these defined values, one or more NLIN or FLIN data records must follow. The maximum number of nonlinear properties that may be defined is 50.

      2   5  7    11                31        41        51        61
    - --- -- ---- ----------------- --------- --------- --------- -----
   |X|   |  |POLY|XXXXXXXXXXXXXXXXX|         |         |         |     ...
    - --- -- ---- ----------------- --------- --------- ---------------
       |  |   |                         |         |         |        |
       |  |   |                         |---------------------------------
       |  |   |                         |
       |  |   |                         |
       |  |   |               (1)-(5) 5 Coefficients of the Polynomial (5E10.0)
       |  |   |
       |  |   |_Compulsory Data Record Keyword (A4)
       |  |
       |  |_Optional User Identifier (A2)
       |
       |_Compulsory END on last data record in Data Category (A3)

(1)-(5) These values represent the coefficients of the polynomial which defines the force in the mooring as a function of extension or compression.

The Tension as a Polynomial Function of Extension. For application to Fenders see note below.

This facility enables the user to approximate the force/extension curve of any mooring line with known characteristics. Note that this data record does not define a mooring line.

The mooring line properties defined on this data record will apply to all NLIN or FLIN data records that follow until another nonlinear property data record is input. (Note that SWIR is also a nonlinear property data record.)

Tension in a mooring line with this property is given by:

Tension = P1.E + P2.E² + P3.E³ + P4.E⁴ + P5.E⁵

P1, P2, P3, P4, P5 = Parameters input on the POLY data record

E = Extension of the mooring line