A numerical calculation method is studied to determine the environmental conditions for emergency anchorage design of liquefied natural gas terminals.The calculation methods for LNG carrier environmental loads and anchorage loads are systematically analyzed using relevant regulations in international standards.The external environmental loads of large LNG ships anchored in the anchorage are obtained under different levels of wind speed,wave height,and current speed combinations,as well as anchorage loads under different bottom environments.The main influencing factors for determining the environmental conditions of LNG emergency anchorage design and the limit environmental standards for emergency anchorage for large LNG ships under different bottom conditions are preliminarily determined.The important influence of ship anchor parameters,anchorage bottom,and water depth on the limit environmental standards for emergency anchorage is demonstrated,and the wind speed limit standard and recommended measures for LNG emergency anchorage are proposed.The research methods can be applied to the early site selection of LNG emergency anchorage,saving experimental research time and costs.