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With the continuous development of the shipping industry, China, a country with a long and tortuous coastline, has a superior geographical position. the emergence of more unpowered ships are promoted by the continuous development of the shipbuilding industry. At the same time, China's coastal areas are also inevitably affected by the typhoon disaster. Although there are relevant countermeasures about typhoon resistance technology at the wharf of large unpowered ships in China. There is still many shortcomings. The purpose of this paper was to put forward more perfect suggestions on measures through the research on typhoon resistance measures at the wharf of large unpowered ships. Based on the existing mooring against typhoon measures of large unpowered ships, this paper aims to analyze and study the existing mooring against typhoon measures of large unpowered ships, and put forward relevant countermeasures to improve the mooring against typhoon measures of large unpowered ships. The Present Situation and Measures of Typhoon Resistance Technology of Large Unpowered Ships Unpowered ships refer to ships without driving ability, including ships which are launched into water after built new marine outfitting while the main engine power is still unable to use, floating docks which are anchored in stationary waters for a long time, as well as ships which lose power due to main engine failure and ships to be repaired (main engine equipment needs to be repaired, power lifting),etc. Therefore, when typhoon comes, large unpowered ships usually mooring directly at the wharf to fight typhoon. However, due to the uncertainty of typhoon prediction, the towing time of large unpowered ships into the shelter anchorage is limited. In addition, large unpowered ships can only enter the typhoon anchorage by relying on the harbor for tugboat. Therefore, when typhoon comes, large unpowered ships usually mooring directly at the wharf. Considering the safety of mooring ships against typhoon for large unpowered ships, the time and strength of typhoon should be predicted timely and accurately in the first place, so as to make preparations for typhoon resistance in advance. To choose good unpowered ships suitable anchorage waters in advance, anchorage ground needs to have the right address, make the anchor maximum holding power, to avoid the walk anchor accident, at the same time for large unpowered ships without driving ability, anchorage ground should have enough depth and have a certain amount of wiggle room, prevent the ship from bumping into the dangerous obstacles or other ships berthing for shelter when encountering typhoon. Secondly, adopt the corresponding mooring mode and anchoring mode of the wharf of the unpowered ship to ensure the stability of the expected strength of the unpowered ship when the typhoon hits. For example, the single point mooring system against typhoon is an effective way to solve the problem of mooring against typhoon for large unpowered ships, but the key is to design a set of practical and reliable mooring technology. The Drawback of Typhoon Resistance Measures at the Wharf of Large Unpowered Ships Due to insufficient monitoring of typhoons, the arrival time and intensity of typhoons cannot be

Study on Typhoon Resistance Measures at the Wharf of Large Unpowered Ships