Natural environment factor risk assessment method under sailing condition of passenger ship

Abstract

The invention discloses a natural environment factor risk assessment method under the sailing condition of a passenger ship. The method comprises the following steps: establishing an evaluation structure of sailing natural environment conditions of an ocean passenger ship as a target layer, a middle layer and an index layer; wherein the target layer is an evaluation result of the natural environment factors, the middle layer is meteorological conditions, hydrological conditions and geological conditions, and the index layer is an actual index factor of each factor under the middle layer; establishing a comment set under the sailing condition of the passenger ship; determining the weight of each index layer relative to the middle layer and the weight of each middle layer relative to the target layer by adopting an analytic hierarchy process; checking the consistency; according to the index factors, collecting physical parameters corresponding to a specific evaluation object, and determining a single-factor evaluation matrix by adopting a membership function; a Zaden operator is adopted to synthesize the weight and the single-factor evaluation matrix, and a multi-level evaluation result is obtained; and normalizing the multi-level evaluation result, and obtaining an evaluation result of the natural environment factors under the sailing of the passenger ship through a maximum membership degree principle.

Description

technical field [0001] The invention relates to the field of risk assessment during the navigation of ships, in particular to a risk assessment method for natural environment factors under the navigation conditions of passenger ships. Background technique [0002] During the voyage of passenger ships, there are many unfavorable factors that need to be paid attention to in terms of ship maneuvering. For example, in the case of low visibility in foggy weather, frequent strong winds in coastal areas, and different currents in four seasons, it is difficult to ensure the safety of ships in the waters. And the tonnage of modern ships is getting bigger and bigger and the speed is getting faster and faster, which will definitely increase the navigation risk of the ship during the navigation process, and the incidence of maritime accidents will also increase. Environmental conditions are an important component of ship navigation risk assessment, so it is of great practical significa...

AI Technical Summary

Problems solved by technology

For example, in the case of low visibility in foggy weather, frequent strong winds along the coast, and different sea currents in different seasons, it is difficult to ensure the safety of ships sailing in this water area.

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