Abstract: The numerical simulation and model test study is conducted on yawing motion characteristic for the 40000 DWT bulk carrier under the combined conditions of wind， wave and current cases. This research analyzed the response of yawing motion and maximum cable tension of anchor chains. Sea condition and length of anchor chains could have influence on them. The test results can provide important technical reference for the safety mooring of single anchored ships.

Key words: yawing motion； single-anchor mooring, numerical analysis, model test