A Calculation Method of the Navigable Width of LNG Carrier’s Two-Lane Channel based on Risk Acceptance Criteria

摘要

In order to ensure the safety of the LNG (Liquefied Natural Gas) carriers’ navigation in two-Lane channel, a method based on risk acceptance criteria to calculate the width of two-Lane channel is proposed. First, the collision probability and risk quantitative calculation model is adopted to obtain the risk acceptance criteria of LNG carriers when they navigate in two-Lane channel. Then according to the traffic and environmental characteristics, we calculate the risk and collision probability of LNG carriers being crashed by passing vessels during their navigation; and calculate the minimum distance between LNG carriers and other vessels with a qualified collision probability or acceptable range of collision risk. The larger value is selected as the width of LNG carrier safety zone. Finally, the width of two-Lane channel according to the width of LNG carrier safety zone is obtained. The method can shed light on similar engineering design.