| In recent years, our shipping markets develop rapidly, and the economic grow fast, the crew team, ship team are in a continually growing. However, as the achievements got, as the marine accidents that caused the loss of life, the damage of property, are concerned by people.Especially water major accidents of the Ro-Ro vessel in storm wave make a great negative social impact, In order to control the happening of water traffic accidents, we must set up forewarning system of the Ro-Ro vessel for sailing safely, and do the work before hand. Make sure the vessel is safe.This article make a extensive collections of early warning, seek the views of the navigational experts, then according the steps of "risk monitoring—risk identification—risk assessment", at last establish the forewarning model of the Ro-Ro vessel sailing safely, propose rationalization proposal about early warning. Specific studies as follows:1.Make the objective and the technical route clearly. Give an introduction about the early warning and its associated research situation at home and abroad.2.Describe the definition of early warning and alert process model.3.Describe the definition of storm wave, and its conditions and characteristics. Explains the definition and characteristics of Ro-Ro vessel, analysis the storm wave, talk about its influence to the safety of navigation.4.Analysis the reason of vessel accident in storm weather, study the forewarning indicators of sailing safety in storm wave, such as human factors, vessel factors, environment factors and management factors.5.Describe the assessment methods of ship early warning:fuzzy theory and AHP.6.Assess the risk of Ro-Ro vessel sailing in the storm wave by mathematics methods, then set up the forewarning system. |