Research On Risk Evaluation And Optimal Route Selection Of Rescue Ship On Heavy Sea

In recent years, our country has been making increasing efforts to salvage at sea, which makes the entire strength of the salvage system grow with each day passing by. However, the emergency relief command system still keeps the operating mode of manual analysis, judgment and salvage decision making, which can not meet the fast and scientific salvage decision-making requirements on emergencies. The related research and system development abroad are highly independent and encapsulated. There are only a few domestic studies, whose scientificity and feasibility are still debatable.This thesis aims to improve the efficiency of national emergency salvage at sea and its success rate. First, based on parameters from field study to the active salvage ships in Sea Rescue Bureaus, the investigation forms on salvage ship stalling and ship route leeway angle are set up. A series of symposia and questionnaires are carried out to the experts and information on the main active salvage ships in North China Sea Rescue Bureau is collected.Second, salvage ship's risk degree evaluation model is set up after study on Fuzzy Mathematics, Risk Theory, electronic chart and other professional knowledge, as well as under the supervisor's instruction. Besides, based on hydro meteorology comprehensive display of the electronic chart and the function requirements of optimized salvage ship route, the sea route risk assessment process is designed.Finally, under the support of electronic chart platform and computer technology, meteorological elements, reasonable assessment on salvage ship and sea route risk degree, as well as optimized salvage ship route selection are comprehensively displayed and dynamically demonstrated. It provides supplementary reference on selecting optimized salvage ship for decision makers.