水面垃圾自动打捞船的设计
水面垃圾自动打捞船的设计,水面垃圾自动打捞船的设计,水面,垃圾,自动,打捞,设计
毕业设计(论文)任务书系 部机械工程系指导教师宋庭新职 称教授学生姓名张荃专业班级09机制一班学 号0915011106论文题目水面垃圾自动打捞船的设计论文内容目标及进度要求1.设计内容(1)完成水面垃圾打捞船的船体结构设计;(2)完成水面垃圾打捞船的打捞结构和传动机构设计;2.要求(1)完成水面垃圾打捞船的总体结构设计,绘制A0图纸一张;(2)完成水面垃圾打捞船的打捞结构和传动机构设计;(3)绘制关键零部件图纸3张(A2两张,A3一张);(4)图纸要求手绘1张,其余在AutoCAD或Pro/E中绘制;(5)在以上工作的基础上完成毕业论文一篇(要求打印);(6)翻译一篇与论文有关的外文资料(3000字左右); 指导教师签名: 年 月 日系 部审 核此表由指导教师填写 由所在系部审核毕 业 设 计(论 文)题 目 水面垃圾自动打捞船 姓 名 张荃 所在学院 工程技术学院 专业班级 09机制1班 学 号 0915011106 指导教师 宋庭新 日 期 2013 年 6月 毕业设计(论文)学生开题报告课题名称水面垃圾自动打捞船的设计课题类型AY指导教师宋庭新学生姓名张荃学 号0915011106专业班级09机制一班本课题的研究现状、研究目的及意义: 20世纪以来,随着人口的急剧膨胀和科学技术的迅猛发展,人类的活动极大地影响着它赖以生存的环境:自然资源过度开发,污染物大量排放,全球资源短缺,生态恶化,环境严重污染等。这些都是大自然给人类敲响的警钟。人类在审视过去和展望未来的同时,已经深刻认识到环境保护对于人类的意义,解决环境问题,科学手段是必需的,但是要“标本兼治”必须通过人类自身环保意识的提高和自觉的环境保护行动,因此,环境教育成为提高人类环境保护意识的一个有力手段和有效措施。特别是在武汉这样的城市,湖泊较多但是污染严重的城市,就急需像水面自动打捞船这样的高效的工具,来完成这项任务。其中打捞船可分为:内河打捞船是一种小型打捞船,排水量一般为20200吨,只配备吊杆、绞车及简易潜水设备,用于河流、湖泊沉船、沉物的打捞;海洋打捞船是一种大型打捞船,排水量几百吨,甚至在千吨以上,一般后者配备大型起吊设备,以及潜水、压缩空气、水下电焊、水下切割等设备。打捞船的特点也很明显:一是打捞船吃力浅,定位准确。有尽量多的舷高,有较宽的甲板可以布置吊杆、绞车及大型起吊设备。.二是航速高,耐波性良好,可以快速驶往打捞作业水域,尽快投入打捞作业。三是有足够大的货舱容量,用来储藏打捞装备,有的打捞船还要装隐身,以及加锁定速度的装备以及打捞改装设备。因此研究自动打捞船的意义重大,这样不仅在科研方面可以推进科学技术的进步,在环境方面也可以还可以还给我们干净的湖泊、美丽的武汉。 课题类型:课题类型: A-理论探究型 B-实践应用型本课题的研究内容:1.完成水面垃圾打捞船的船体结构设计:从总体上设计水面垃圾自动打捞装置的机械系统,并画出其总体装配图. 2.完成各机械零件装置的检验工作:设计内容.主要利用自己的机械设计和机械原理知识,对各机械零件进行强度;刚度校核.更改相关的不合格零件。本课题研究的实施方案、进度安排:实施方案:运用所学的机械原理和机械设计知识,查阅相关资料绘制船体的机械结构装配总图;主要利用自己的机械设计和机械原理知识,对各机械零件进行合理的设计,进行强度;刚度校核.检验其是否合格.进度安排:4月2号 开题报告 4月3号-4月15号 查阅相关的机械装置的资料,并进行概述和文献综合。4月16号-4月30号 简单设计数据5月1号-5月14号 对各机械零件进行强度;刚度校核.检验其是否合格.5月15号-5月31号 绘制各个零件图6月1号-6月4号 绘制船体结构总装配图6月5号-6月7号 答辩准备。6月8号 答辩。已查阅的主要参考文献: 参考文献1濮良贵,纪名刚主编机械设计(第七版)北京:高等教育出版社,2002 2陈秀宁,施高义主编 机械设计课程设计杭州:浙江大学出版社,19953吴宗泽,罗圣国主编机械设计课程设计手册北京:高等教育出版社,19924濮良贵,纪名刚主编 机械设计学习指南北京:高等教育出版社,20025彭文生等主编机械设计与机械原理武汉: 华中理工大学出版社,1998.6机械设计手册 (软件版)V3.0北京:化学工业出版社,20057徐灏主编 .机械设计手册M. 北京:机械工业出版社,2004.8孟宪源主编. 现代机构手册下册.北京:机械工业出版社,19949 王为主编 机械设计武汉:华中科技大学出版社 ,2007 10余清肃主编机械设计课程设计武汉: 华中科技大学出版社,2001指导教师意见指导教师签名: 年 月 日毕业设计(论文)任务书系 部机械工程系指导教师宋庭新职 称教授学生姓名张荃专业班级09机制一班学 号0915011106论文题目水面垃圾自动打捞船的设计论文内容目标及进度要求1.设计内容(1)完成水面垃圾打捞船的船体结构设计;(2)完成水面垃圾打捞船的打捞结构和传动机构设计;2.要求(1)完成水面垃圾打捞船的总体结构设计,绘制A0图纸一张;(2)完成水面垃圾打捞船的打捞结构和传动机构设计;(3)绘制关键零部件图纸3张(A2两张,A3一张);(4)图纸要求手绘1张,其余在AutoCAD或Pro/E中绘制;(5)在以上工作的基础上完成毕业论文一篇(要求打印);(6)翻译一篇与论文有关的外文资料(3000字左右); 指导教师签名: 年 月 日系 部审 核此表由指导教师填写 由所在系部审核毕业设计(论文)学生开题报告课题名称水面垃圾自动打捞船的设计课题类型AY指导教师宋庭新学生姓名张荃学 号0915011106专业班级09机制一班本课题的研究现状、研究目的及意义: 20世纪以来,随着人口的急剧膨胀和科学技术的迅猛发展,人类的活动极大地影响着它赖以生存的环境:自然资源过度开发,污染物大量排放,全球资源短缺,生态恶化,环境严重污染等。这些都是大自然给人类敲响的警钟。人类在审视过去和展望未来的同时,已经深刻认识到环境保护对于人类的意义,解决环境问题,科学手段是必需的,但是要“标本兼治”必须通过人类自身环保意识的提高和自觉的环境保护行动,因此,环境教育成为提高人类环境保护意识的一个有力手段和有效措施。特别是在武汉这样的城市,湖泊较多但是污染严重的城市,就急需像水面自动打捞船这样的高效的工具,来完成这项任务。其中打捞船可分为:内河打捞船是一种小型打捞船,排水量一般为20200吨,只配备吊杆、绞车及简易潜水设备,用于河流、湖泊沉船、沉物的打捞;海洋打捞船是一种大型打捞船,排水量几百吨,甚至在千吨以上,一般后者配备大型起吊设备,以及潜水、压缩空气、水下电焊、水下切割等设备。打捞船的特点也很明显:一是打捞船吃力浅,定位准确。有尽量多的舷高,有较宽的甲板可以布置吊杆、绞车及大型起吊设备。.二是航速高,耐波性良好,可以快速驶往打捞作业水域,尽快投入打捞作业。三是有足够大的货舱容量,用来储藏打捞装备,有的打捞船还要装隐身,以及加锁定速度的装备以及打捞改装设备。因此研究自动打捞船的意义重大,这样不仅在科研方面可以推进科学技术的进步,在环境方面也可以还可以还给我们干净的湖泊、美丽的武汉。 课题类型:课题类型: A-理论探究型 B-实践应用型本课题的研究内容:1.完成水面垃圾打捞船的船体结构设计:从总体上设计水面垃圾自动打捞装置的机械系统,并画出其总体装配图. 2.完成各机械零件装置的检验工作:设计内容.主要利用自己的机械设计和机械原理知识,对各机械零件进行强度;刚度校核.更改相关的不合格零件。本课题研究的实施方案、进度安排:实施方案:运用所学的机械原理和机械设计知识,查阅相关资料绘制船体的机械结构装配总图;主要利用自己的机械设计和机械原理知识,对各机械零件进行合理的设计,进行强度;刚度校核.检验其是否合格.进度安排:4月2号 开题报告 4月3号-4月15号 查阅相关的机械装置的资料,并进行概述和文献综合。4月16号-4月30号 简单设计数据5月1号-5月14号 对各机械零件进行强度;刚度校核.检验其是否合格.5月15号-5月31号 绘制各个零件图6月1号-6月4号 绘制船体结构总装配图6月5号-6月7号 答辩准备。6月8号 答辩。已查阅的主要参考文献: 参考文献1濮良贵,纪名刚主编机械设计(第七版)北京:高等教育出版社,2002 2陈秀宁,施高义主编 机械设计课程设计杭州:浙江大学出版社,19953吴宗泽,罗圣国主编机械设计课程设计手册北京:高等教育出版社,19924濮良贵,纪名刚主编 机械设计学习指南北京:高等教育出版社,20025彭文生等主编机械设计与机械原理武汉: 华中理工大学出版社,1998.6机械设计手册 (软件版)V3.0北京:化学工业出版社,20057徐灏主编 .机械设计手册M. 北京:机械工业出版社,2004.8孟宪源主编. 现代机构手册下册.北京:机械工业出版社,19949 王为主编 机械设计武汉:华中科技大学出版社 ,2007 10余清肃主编机械设计课程设计武汉: 华中科技大学出版社,2001指导教师意见指导教师签名: 年 月 日毕业设计(论文)学生申请答辩表课 题 名 称水面垃圾自动打捞船的设计指导教师(职称)宋庭新申 请 理 由毕业设计学生所在系部机械工程系专业班级09机制一班学号0915011106 学生签名: 日期:毕业设计(论文)指导教师评审表序号评分项目(理工类)满分评分1工作量152文献阅读与外文翻译103技术水平与实际能力254研究成果基础理论与专业知识255文字表达106学习态度与规范要求15总 分100评语 (是否同意参加答辩) 指导教师签名: 另附毕业设计(论文)指导记录册 年 月 日毕业设计(论文)评阅人评审表学生姓名张荃专业班级09机制一班学号0915011106设计(论文)题目水面垃圾自动打捞船的设计评阅人宋庭新评阅人职称教授序号评分项目(理工类)满分评分1工作量152文献阅读与外文翻译103技术水平与实际能力254研究成果基础理论与专业知识255文字表达106学习态度与规范要求15总 分100评语 评阅人签名: 年 月 日毕业设计(论文)答辩表学生姓名张荃专业班级09机制一班学号0915011106设计(论文)题目水面垃圾自动打捞船的设计序号评审项目指 标满分评分1报告内容思路清晰;语言表达准确,概念清楚,论点正确;实验方法科学,分析归纳合理;结论有应用价值。402报告过程准备工作充分,时间符合要求。103创 新对前人工作有改进或突破,或有独特见解。104答 辩回答问题有理论依据,基本概念清楚。主要问题回答准确,深入。40总 分100答辩组评语答辩组组长(签字): 年 月 日 答辩委员会意见答辩委员会负责人(签字): 年 月 日6-1毕业设计(论文)答辩记录表学生姓名张荃专业班级09机制一班学号0915011106设计(论文)题目水面垃圾自动打捞船的设计答辩时间2013年6月8日答辩地点工-A-601答辩委员会名单问题1提问人: 问题:回答(要点):问题2提问人: 问题:回答(要点):问题3提问人: 问题:回答(要点):记录人签名(不足加附页)问题4提问人: 问题:回答(要点):问题5提问人: 问题:回答(要点):问题6提问人: 问题:回答(要点):问题7提问人: 问题:回答(要点):问题8提问人: 问题:回答(要点):记录人签名毕业设计(论文)成绩评定总表学生姓名: 张荃 专业班级:09机制一班 毕业设计(论文)题目:水面垃圾自动打捞船的设计成绩类别成绩评定指导教师评定成绩评阅人评定成绩答辩组评定成绩总评成绩40%+20%+40%评定等级注:成绩评定由指导教师、评阅人和答辩组分别给分(以百分记),最后按“优(90-100)”、“良(80-89)”、“中(70-79)”、“及格(60-69)”、“不及格(60 以下)”评定等级。其中,指导教师评定成绩占40%,评阅人评定成绩占20%,答辩组评定成绩占40%。毕 业 设 计(论 文) 水面垃圾自动打捞船学生姓名:张荃学 号:0915011106所在系部:机械工程系专业班级:09机制1班指导教师:宋庭新 教授日 期:二一三年六月 The garbage salvage ship automaticallyByZhang QuanMay 2013学位论文原创性声明本人郑重声明:所呈交的学位论文是本人在导师的指导下独立进行研究所取得的研究成果。除了文中特别加以标注引用的内容外,本论文不包含任何其他个人或集体已经发表或撰写的成果作品。本人完全意识到本声明的法律后果由本人承担。 作者签名: 年 月 日学位论文版权使用授权书本学位论文作者完全了解学院有关保管、使用学位论文的规定,同意学院保留并向有关学位论文管理部门或机构送交论文的复印件和电子版,允许论文被查阅和借阅。本人授权省级优秀学士学位论文评选机构将本学位论文的全部或部分内容编入有关数据库进行检索,可以采用影印、缩印或扫描等复制手段保存和汇编本学位论文。本学位论文属于 1、保密 ,在 年解密后适用本授权书。 2、不保密 。 (请在以上相应方框内打“”) 作者签名: 年 月 日 导师签名: 年 月 日附五:毕业论文附件材料 学生姓名:张荃学 号:0915011106所在系部:机械工程系专业班级:09机制1班指导教师:宋庭新 教授日 期:二一三年六月(1 The history of the ship Ships can refers to the voyage or anchor in waters transportation tools or homework, according to the requirements of the use of different and have different technical performance, equipment and structure. Ship in the defense, national economy and ocean development occupies very important position. Ship from prehistoric Ku wood for boat, canoe and wooden boats, 1879 years after the advent of the worlds first steel ship era began, which is mainly composed of steel ships. Ship propulsion also by rely on manpower and animal power and wind power in the 19th century (i.e., a pole, paddle, sculling, against and windsurfing) development to use machine driver. In 1807, the United States of Fulton in building its first forward using paddle steamer clay montmorillonite, speed is about 8 km/hour; In 1839, the first steam engine with propeller ship Archimedes, host power is 58.8 kw. This propeller fully shows its superiority, and was quickly promoted. In 1868, Chinas first aircraft load 600 tons, the power of 288 kw steam engine warships HuiJi build successful. In 1894, parsons in Britain with his invention of the reaction turbine as a host, installed on the yacht turbine Virginia, on the river Thames trial is successful, speed of more than 60 kilometers. Early steam turbine steam turbine ship and propeller is the same speed. After about 1910 years, a gear reduction, power reduction gear and hydraulic speed reducer. Marine steam turbines are adopted, for example, after this reduction drive way. In France from 1902 to 1903 in building a ship diesel engine the channel boats; Built in 1903, the Russian ship diesel engine state in the water. The middle of the 20th century, the diesel engine power plant become the main power plant of transport ships. Britain in 1947, the first will be used in aviation gas turbine retrofit, then install on coast yacht lick, instead of the original gasoline engine, its host power is 1837 kw, speed to 3600 r/min, the gear reducer and propeller shaft drive. The unit weight of the device is only 2.08 kg/kw, far more than any other device and lighter. Successively, the 60 s and emerged with a combined gas turbine and steam turbine power plant of medium and large surface warship. Contemporary naval power, the stronger countries, in large and medium-sized ship, except the power big adopts steam turbine power plant, almost all use gas turbine power plant. In the civilian vessels, gas turbine efficiency is lower than diesel engine, with very little. The discovery and use of atomic energy for ship power has opened up a new way. Built in 1954, the us nuclear submarine nautilus, the water power of 11025 kilowatts, speed 33 km; In 1959, the Soviet union built nuclear-powered icebreaker Lenin, the power of 32340 kw; That same year, the United States nuclear-powered ship savannah, water power of 14700 kilowatts. Existing nuclear power plant are using pressurized water reactor, steam turbine, mainly used in submarines and aircraft carriers, and in civilian vessels, didnt get development for economic reasons. 70 s 80 s, in order to save energy, some countries absorb the advantage of the motorized boats, and develop a machine primarily, navigation of the ship to sail. Use electronic computers for joint control, built by the Japanese new Ed pill is the representative of energy-saving ship. Ancient China was a pioneer of the shipbuilding and navigation. The spring and autumn period and the warring states period had shipbuilding factory, can manufacture warships; The han dynasty have been able to manufacture with rudder ship; Tang and song period, river boats and ships have prominent development, invented the watertight door; Ming dynasty zheng hes treasure ships to the western seas seven times, in terms of scale, performance, and sailing range, is the world leading position. In modern times, the development of Chinas shipbuilding industry is slow. 1865 1866, the qing government successively founded the jiangnan manufacturing bureau and fuzhou ship-building bureau, built the build sea flat such as warships and jiang new on the Yangtze river passenger-cargo ship. After the founding of new China, the shipping industry has made great development, build a batch of 50 s coastal passenger ships, cargo ships and tankers. In the 60 s, after Chinas shipbuilding capacity increase fast, appeared many type Marine ships, the Yangtze river transport ships, offshore oil development and military vessels, ocean survey ship, large Marine shipping tonnage has amounted to more than 300000 deadweight tonnage. With a few special shipping, China has been able to design and manufacture all kinds of military ship and civil ship. Vessel is made up of many parts, according to the function and purpose of each part, can be summarized as hull, ship power plant, such as ship outfitting three parts. Is the basic part of the ship hull, superstructure and can be divided into the main body part. Usually under deck on the part of the body, it is made of the hull (bottom and side) and the upper deck of a specific shape of the hollow body, is to ensure that the ship has the required buoyancy, navigation and a key part of the hull strength performance. Hull is commonly used in power plant layout, loading goods, storage of fuel and fresh water, and other various cabin layout. In order to guarantee the resistance of the hull strength, improve the ship sank and arrangement of cabin, usually set a number of strong watertight bulkhead and inner bottom, forming a certain number of watertight compartment within the main body, and set up according to the need to intermediate deck or platform, the main body level is divided into several layers. Superstructure is located in the upper deck above, from left, right side, front and back end wall and into the layers of deck, the cabin inside it is mainly used to decorate a variety of purposes, such as work room, living room, storage room, equipment cabin, etc. Superstructure, floors, and the size of the pattern for shipping purpose and scale. Ship power equipment including: propulsion - host through the reduction gear, transmission shaft to drive the propeller (propeller is the main type); Serve for the operation of the propulsion system auxiliary mechanical equipment and systems, such as fuel pump, oil pump, cooling water pump, filter, cooler, heater, etc.; Ship power station, it for ship deck machinery and ancillary machinery and ship cabin lighting power; Other auxiliary machinery and equipment, such as boiler, blower, shipping each system of the pump, lifting machinery and equipment, maintenance tools, etc. Usually outside of the host (boiler) and are collectively referred to as auxiliary machinery. Ship outfitting include the booth structure (wall, ceiling, floor, etc.), furniture and living facilities (kitchen, health, etc.), coating and paint, doors and Windows, stairs and railings, mast, hatch cover, etc. Ships of other devices and equipment, in addition to the propulsion system, and the anchor and mooring equipment; The rudder equipment and steering gear; Life-saving equipment; Fire fighting equipment; Ship the internal and external communications equipment; Lighting equipment; Signal devices; Navigation equipment; For cargo gear; Ventilation, air conditioning and refrigeration equipment; Sea water with fresh water and life system; The ballast water system; Liquid tank of sounding system and ventilation system; Bilge water drainage system; Marine electrical equipment; Other special equipment (in accordance with the special needs of the ship). Ship classification method are many, according to purpose, navigation condition, hull number, propulsion, such as propeller classification. According to the purpose, generally divided into two major categories of military and civilian ships of the ship. Usually referred to as the ship or ships, military vessels including direct operational capability or waters protection ability called combat vessels, such as aircraft carriers, destroyers, frigates, missile boats and submarines, as well as bray, minesweeper, etc., for logistics guarantor called military auxiliary vessels. Civilian ships generally includes a carrier, engineering ship, fishing boat, port, etc. According to the ship sailing state is usually divided into displacement ships, glider, hydrofoil and hovercraft. According to the number of ship hull can be divided into single ship and multi-body, catamaran is relatively rare in multibody ship type; Can be divided by propulsion powerboat and non powerboat, stated by promoting the host type is divided into steamer (now obsolete), gas turbine, diesel engine, gas turbine ship, ship combined ship, electric propulsion ship power plant, nuclear ship, etc.; Can be divided into the ship propeller according to the ship propeller, jet boat, jet propulsion ship, wheeler, swing boat, air propeller is used only for a few hovercraft; According to the position of the engine room, engine ship with tail (the rear section of the cabin on the ship), the model ship and tail in the model; According to the hull structure materials, steel ship, aluminum alloy, wooden, wire mesh concrete boats, fiberglass boats, rubber boats, mixed structure vessel, etc. Main technical features of ship is ships tonnage, ship principal dimensions, hull coefficient, capacity and register tonnage, body plan, ship general arrangement, hull structure and main technical specifications of equipment, etc. According to the principle of Archimedes, the weight of the hull below the waterline tier boiled water, is the buoyancy of the ship, and should be equal to the total weight of the ship. Ship is equal to the weight of air displacement. Ships deadweight and loaded to the ships the sum total of all kinds of load weight (weight) is variable, which is equal to the total weight of the ship. Ship load including goods, fuel oil and lubricating oil, fresh water, food, personnel, and luggage, spare parts and supplies, etc. The weight of the Usually predetermined design with a predetermined maximum range calculation loads of oil, water, food, etc., the sum of the weight of the known as the design load. When the design load of displacement or displacement is called design load displacement. Ship principal dimensions including length, design the ship line length, vertical long, wide, wide and deep, full load (design) draft, etc. Steel ship owners scale measurement refers to the amount to the inner surface of hull plate size, called type width, and depth, concrete boats, boat, etc is refers to the amount to the outer hull size. Capacity refers to the cargo volume, fuel tank, water tank, etc, it comes from the capacity on characterization of the ship loading capacity, battery life, its effect on the operating capacity of the ship. Register tonnage is left behind in the history of metrics used to measure ship loading capacity, as the basis of trading vessels, tax and service charge. Register tonnage and the load respectively reflect the cabin of the ships capacity and bearing capacity. Although they contact with each other, but belong to different concepts. Ship the size chart is the characterization of the ship main body (including the bulwark, forecastle and poop) the shape and size of the type of surface, is one of the most important drawings to design and build of the ship. It consists of three groups chart: cross-cutting chart, half water lines and wide buttock line graph. Followed by the transverse section, water plane and profile and hull surface are cut. Ship design always is one of the main drawings to design and build of the ship, which reflect the characteristics of ship structures, shapes and sizes, all kinds of the position of the cabin and internal layout, the layout of internal stairway, deck equipment layout. General arrangement by the elevation, the deck floor plan and tank division of figure. Hull structure is reflect the structure of the hull sections, the relevant part of the hull structure is both independent and contact each other. Ship the main structure is the key to guarantee the ship longitudinal and transverse strength, usually put it into a hollow beams to carry on the design, and shipping midship section structure to reflect its parts size and specifications. Vessels are the main performance of buoyancy, stability, resistance to sink, quickness, seakeeping, maneuverability and economy, etc. Buoyancy is refers to the ship in various load cases, can float in the water and keep the first and the ability of the stern draught and freeboard. According to the equilibrium condition of gravity and buoyancy of ship, ship buoyancy is related to the load capacity and the safety of navigation. Stability refers to the ship tilted by external force leave balance position, when the external force disappears, the ship can revert to original balance position. Generally the water stability of ship is mainly refers to when heeling stability. Vessel width and waterline coefficient, freeboard, center of gravity height and side area size and height above the surface, and the stand or fall of hull opening sealing, etc., are the main factors influencing the ships stability. Heavy resistance refers to the underbody, such as damage, still can float after the cabin flooded but not heavy and not overturn. Chinas song dynasty shipbuilding when they first invented the watertight bulkhead to ensure ship heavy resistance. Ship main body part of the watertight the rationality of the subdivision, subdivision of the freeboard deck values and complete the stand or fall of ships stability, etc., are the main factors affecting the heavy resistance. Quickness is the characterization of sailing boat in calm water line speed, the performance of the relationship between it and its host power needed. It is an important technology index of the ship, the ship had a greater influence on the use effect and operating expenses. Ships rapidity involves two aspects of ship resistance and ship propulsion. Reasonably choose ship principal dimensions, hull coefficient (especially square coefficient of G and prismatic coefficient G) lines, and is the key to reducing ship resistance. Seakeeping refers to the degree of ships in waves of oscillation
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