Abstract: This paper presents numerical simulation of key physical properties of offshore dynamic power cable, including axial, torsional and bending stiffness. These properties were verified by performing full scale test. Comparison of the results indicates the inherent relation between the complex numerical model and actual product. The testing results reveal the validity of the assumptions implemented in the numerical model and also indicate the origin of the difference between the simulated and measured results. The results from the paper form a firm theoretical on how to choose proper physical properties offshore dynamic power cables in floating production system. The findings in the paper are critical for the design, installation, operation and maintenance of the offshore dynamic power cables. It also provides a guidance on how the next generation numerical simulation tools should be developed.