According to recent of the inquisition statistics express , our country the international shipping company into practice ism code of single ship trouble of average rate , average and single ship death the number only into practices ex - quarter with six one of the cents 据最近的调查统计表明，我国国际航运公司实施《 ism规则》后的平均单船事故率、平均单船死亡人数仅是实施前的四分之一和六分之一。
This text bases on research result of former russia scholar to compiling calculational program , which predicts turning trajectory and zigzag manoeuvre of single ship model and various formal ship fleet models in the condition of deep water and shallow water 本论文是采用前苏联学者巴甫连柯等学者的研究成果编制计算程序，对单船船模及常见的各种形式的船队船模的回转运动、 z型操纵运动进行了数学仿真。
The lien of vessels not being registered , in the author ' s opinion , should be compensated in the same order . besides the normal pattern , two special patterns i . e . the vessels under building mortgage financing pattern and vessels owned by the single - vessel company mortgage financing pattern are designed 在设计了船舶抵押融资的通常模式后，作者又设计了在建船舶抵押融资模式和单船子公司以所有船舶抵押融资模式两种具有自身特色的抵押融资模式。
With the development of international trade , the world ' s marine is expanded rapidly , which makes the amount of ships in the sea increased evidently , single ship tonnage enlarged sharply , the ship speed improved constantly ; which creates the sea transportation density extended , the voyage more complicated 随着国际贸易的发展，世界海运量迅速扩大，使得海上航行的船舶数量显著增加，单船吨位急剧扩大，船速也在不断提高，造成海上交通密度加大，航行更加复杂。
The study and discussion is made on the issues of ship mortgage financing legal system such as the subject , the object , the right and obligation relationship between two parties , ship mortgage register , etc . comparing with the normal pattern , concrete analysis is made on the mortgage financing pattern of both the ship under construction and the single - vessel company . chapter x is mainly about the range and category about the mortgagors , i . e 作者在本文中，研究论述了船舶抵押融资法律关系中的抵押融资主体、抵押融资客体、抵押融资双方权利义务关系，以及船舶抵押登记等问题，并对与一般船舶抵押融资模式相比，具有自身特色的在建船舶抵押融资模式和单船子公司抵押融资模式，进行了具体的分析和设计。
This paper is based on the cosco vessel investment decision support system project . firstly , according to the shipping enterprise ' s situation and character , a program suitable to the shipping enterprise is given , which is used to help decision - maker analyze the economical effect of the investment and choose correct investment project . secondly , the author extends the use of the evaluation method of single ship investment , simplifys the calculation of revenue and cost , set up the multi - objective synthesis evaluation model of ship investment to evaluate ship investment considering the fleet as a whole , then to make decisions on vessel type jtonnage , number , financing pattern ; finally , the author analyzes the system , and designs the system , mainly including the design of operation database , design of decision support database , the design of models database , system interface , the style of the system , and analyzes the techni cal problems about the system , some functions has been put into use 以辅助或支持企业的决策者分析投资的经济效果，选择投资方向及决策方案，使决策的结果更能满足航运企业发展的实际需要，作出科学的决策；其次，本文将单船投资决策的技术经济评价方法进行推广，在计算npv指标中涉及到的复杂的成本与收入计算问题进行简化，并利用运筹学的知识，建立船舶投资决策模型，从船队整体角度对船舶投资进行综合评价，以达到对船队中投入船舶种类、船舶吨位、数量与融资方式选择的多维决策；最后，本文对船舶投资决策支持系统进行了详细的系统分析，作出整体框架设计，主要包括操作数据库设计、 dss数据库设计、模型库设计和系统接口、系统风格设计，并对系统开发中涉及到的技术问题予以分析，并实现了部分功能。
On the basis of the research on the channel transit capacity of single vessel , and with the combination of previous research methods , a comprehensive assessment model is set up in view of the effective width of the channel ; the passing depth of the channel ; the time taken for passing at high tide . some new viewpoint are developed from the mathematical analysis on the width of the track belt 针对基于单船的航道通过能力的研究，结合以往研究方法，确定了以航道有效宽度、航道通航水深及乘潮历时为考察对象的综合评定模型，针对将数学方法结合数值模拟对航迹带宽度的求解提出了一些新的见解。
