Introduction to Mooring Systems
Dwindling
oil supplies push newer oil fields onto waters of greater and greater depths.
As a result, the
mooring and riser systems anchoring these fields are now being designed for lengths greater than 6000
ft. (1828m).
To date, no test basin can
perfectly model the mooring systems dimensions required by these deep sea operations.
Thus, truncation methods must be created to ameliorate the design. Traditional truncation methods involve the use of a series of
linear spring stiffness to model the non-linear
mooring stiffness excursion curve.