| This thesis studies security transportation of timber vessel, probes into the problem about stability during transportation of timber vessel and discusses how buoyancy produced by deck cargo of timber affects the improvement of the arm of force of stability. It also offers the corresponding height of timber with the supplementary curve diagram. The auto stowage program is designed on the basis of features of timber vessel in principle of pursuing maximum economic benefits.In the beginning, the thesis introduces the status quo of transportation of timber, and illustrates features of stowage and structure of vessel. It also illustrates international rules and conventions about timber vessel and transportation of it. It explains how to make full use of stowage capacity of timber vessel. It offers design to satisfy the requirement of rule of IMO, "Under the circumstance that the rate of infiltration is more than 25%, the buoyancy of 75% volume of timber cargo under water should be considered. If the administration in charge regulates that the infiltration rate of deck cargo and presumptive validity height should be investigated, the curve diagram of stability needs to be supplemented. Under such circumstances, how buoyancy produced by timber affects the improvement of the arm of force of stability should be considered. Moreover, the corresponding height of timber and the supplementary curve diagram should be offered."The thesis chooses timber vessel, "Feiyunling", as an example. In the end, the auto stowage program is designed on the basis of the feature of timber vessel in principle of pursuing maximum economic benefits. Some vessel technology indexes, such as reasonable optimization of stowage water, vessel draft, weight of deck cargo, ensure stability, draft, draft deviation, partial intensity of deck cargo and limitation of deck cargo required by look-out view and binding equipment. In the end, timber vessel, "Feiyunling", is selected as an example to design auto stowage program. |
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