Abstract: The construction of single anchor leg mooring system is analyzed. Constraint
definitions are made based on the parts’ structure dimensions in the system, and the constraints
among the parts are analyzed, by which the parametric design of the system is simplified and the
constraints analysis of the structure becomes quite clear. After the above, the relating analysis of
the parts is made to help to determinate the order of the modeling. At last, a parametric design
system of single anchor leg mooring is developed based on the software of SolidWorks.

Key words: computer application, single point mooring system, parametric, design