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This study has focused on developing numerical procedures for the static and dynamic nonlinear analysis of mooring lines. A geometrically nonlinear finite element method using isoparametric cable element with two nodes is briefly pre-sented on the basis of the total Lagrangian formulation. The static and dynamic equilibrium equations of mooting lines are established. An incremental-itemtive method is used to determine the initial static equilibrium stale of cable systems un-der the action of self weights, buoyancy and current. Also the Newmark method is used for dynamic nonlinear analysis of ocean cables. Numerical examples are presented to validate the present numerical method, and examine the effect of var-ious parameters.