摘要本文是关于如何使用NAPA软件来进行2000吨沿海油船的总体设计。课题的主要内容包括：根据母型船完成船模建立；新船主尺度的确定；排水量和舱室容积的校核；仿射变换得到新船模型和具体载况的定义；对设计船舶的静水力性能和船舶稳性等性能的研究；最后是进行船舶干舷以及船舶总吨位的计算。59515

根据计算机软件来进行船舶的设计研究工作不仅可以保证研究的准确性还可以大大减少工作量，提高工作效率。利用计算机软件进行船舶的设计工作可以促进国内的造船业更好的与世界造船接轨。通过熟练操作NAPA软件，实现数字化模型的构筑，掌握数字化设计船舶、研究船舶性能的各项方法与技巧，本专业的设计人员便可以更好地掌握好总体设计的方法，并将专业知识与实际工作相结合，从而更好地完成船舶的设计工作。

毕业论文关键词：数字化模型；油船；总体设计；NAPA软件

Abstract This article is about how to use the NAPA software for 2000 tons of overall design of the coastal tanker. The main content of the topics include: establish the ship model according to the mother ship;make sure the determination of the new ship; check the displacement and cabin capacity; transform the model ship to get the new one and finish the definition of specific loading conditions; get the static hydraulic calculation ,the ship's stability and some other properties; The last item is to get the freeboard and the gross tonnage of the ship. 

    Using the computer software for the design of ship can not only ensure the accuracy of the research but also greatly reduce the workload and improve work efficiency. Applying the software to design the ship also can promote the domestic shipbuilding industry and contact with the world shipbuilding industry. By familiar operation of  the NAPA software, the realization of digital model design`s construction ,and all kinds of methods and techniques of study ship properties , the professional design personnel can better master the overall ship design method, and combine the professional knowledge and practical work., so as to complete the design work of the ship.

Keywords: The digital model；Oil tanker; The overall design; NAPA software

目  录

第一章 绪论 1

1.1概述 2

1.2油船的简要发展史 2

1.3 油船的结构特点 2

1.4主要研究方法与步骤 2

第二章 油船船型与尺度确定 4

2.1主要要素的初步确定 4

2.1.1母型船资料 4

2.1.2 粗估排水量 4

2.1.3垂线间长L 5

2.1.4 型宽 B 5

2.1.5 型深 D 6

2.1.6 吃水 d 6

2.1.7方形系数 Cb 6

2.2确定设计船舶的载重量 6

2.3排水量校核 8

2.4舱容校核 8

2.5 快速性校核 9

2.6 稳性校核 10

2.6.1 初稳性高度 10

2.6.2 横摇周期 11

2.7 主要要素总结 11

第三章 利用NAPA的船型建模