• 한국마린엔지니어링학회:학술대회논문집
• /
• 한국마린엔지니어링학회 2005년도 후기학술대회논문집
• /
• pp.92-93
• /
• 2005

A contract for the shipbuilding is usually a complicated and involves statement of rights, obligations and responsibilities which each party agrees vis-a vis the other. The ultimate purpose of the contract is the sale and transfer of the finished ship by the builder to the buyer. Contracts for the construction and sale of ships are categorized as contracts for the sale of goods under English, United States, Germany and some countries law. On the other hand, The shipbuilding contract may be classified, not as a contract of sale but as a contract for work and materials under Korea, Japan and some countries law. Especially, most of countries are now well settled with regard to liability of a manufacturer in tort for physical injury and on the other for pure economic loss to remote owners of chattels. Where there is either a breach of contractual warranty or an implied warranty, there may be admiralty jurisdiction, depending once again on the situs of the event and its relationship to traditional maritime activity. Contract principles will be applied to the first type of warranty and tort principles will be applied to the second. First of all, this thesis is dealt with the contents of contract under English Law. Secondly, this thesis is analysed into the liability of shipbuilder in Products Liability under English, American and Korean Law comparisons. In conclusion, the author tries to give some suggestions as countermeasures of Products Liability to the shipbuilder in Korea.

• 한국측량학회지
• /
• 제29권6호
• /
• pp.613-620
• /
• 2011

해상 준설성과의 과학적 평가를 위해서는 준설선의 유도 위치, 준설수심 및 준설 토사량 등의 준설공정을 실시간으로 모니터링하면서 작업공정을 관리하고 평가할 수 있는 시스템의 구축이 필요하다. 본 연구에서는 기상조건과 거리에 상관없이 상시측량이 가능한 GPS 측량방법을 응용하는 정밀위치측량과 항행의 두가지 기법에 수심측정기법 등을 병용하는 해상측량시스템을 개발하고자 하였다. Beacon DGPS를 기반으로 하는 선박위치측정, GPS/Gyro 통합장비에 의한 선박방향 측정, 준설심도와 붐대위치 측정, 조위에 따른 준설심도 보정 등의 기능을 갖춘 해상준설선의 유도 및 위치관리시스템을 구축하고 준설선의 작업 현황을 실시간으로 모니터링하면서 정확히 작업을 유도할 수 있는 운용프로그램을 개발하였다. 본 연구에서 개발된 시스템은 해상준설 또는 해상건설산업에서 원가 절감에 크게 기여할 수 있을 것으로 기대된다.

• 대한조선학회논문집
• /
• 제50권5호
• /
• pp.334-342
• /
• 2013

In this paper, we analyze the procedure of the design manager for the enhancement of the hull production design process by use of the simulation method. Normally, design manager assigns design jobs according to various methods and estimates the corresponding results. When the construction drawing which is the output of the detail design where a design is dealt by zones, the design manager identifies blocks and analyzes their work difficulties, and assigns jobs to design engineers who are different in capabilities. These processes including the design engineer who can be modeled with man-hours evaluation model are represented in detail as a simulation model. As the high-level modeling for the discrete-event system, we use Event Graph model. And we implemented the simulation using Simkit which is open simulation engine for the discrete-event system. We made the simulation scenario to be written by a user in the scenario generator which is separated from the simulation model, and made the simulation result to be visualized in the form of Gantt chart in a Web. In the scenario of the irregular issuance for various construction drawings which contain different numbers of blocks, we performed the Monte-Carlo simulation according to various assignment methods to find the assignment result that satisfies the mid-term schedule.

• 한국항해항만학회:학술대회논문집
• /
• 한국항해항만학회 2003년도 춘계공동학술대회논문집
• /
• pp.21-26
• /
• 2003

지금까지의 탄성설계 개념에서 진전하여 소성을 고려한 탄소성 설계 개념의 설계적용이 필요하다 본 연구에서는 선체의 대표적인 구조물인 판을 대상으로 일반적인 하중형증분법 및 변위형증분법과 같은 비선형해석 기법과 호장증분법과 Newton-Raphson법을 병용한 증분형해법을 비교하였다. 특히. 초기처짐의 형태에 따른 해석을 통하여 초지처짐의 형상에 따른 판의 탄소성거동을 규명하였다 압축하중을 받는 박판구조물은 초기좌굴후 거동과 2차좌굴후 거동이 구조물 전체에 미치는 영향이 매우 크며 이러한 복잡한 거동을 구하기 위해서 해석방법으로는 범용 유한요소해석 프로그램인 ANSYS를 이용하였고 특히 호장증분법은 좌굴점에서의 복잡한 비선형 거동을 추정하기 위하여 적용하였다.

• 대한조선학회 특별논문집
• /
• 대한조선학회 2015년도 특별논문집
• /
• pp.46-49
• /
• 2015

Common Structural Rules (CSR) about bulk carriers and double-hull oil tankers of International Association of Classification Societies (IACS) has been applied to ships contracted for construction since April 2006. By unifying each society's rules, the difference of opinion in the between shipyard and ship owners, classification was reduced, and CSR has been evaluated by rules the safety structure more enhanced. However, The CSR about the bulk carriers and double hull oil tankers, important design content standards, such as the local scantling calculation, static/dynamic load case and corrosion margin and etc., are different. Therefore in order to combine the CSR, the Harmonized CSR for bulk carriers and double hull oil tankers (H-CSR) was issued on 1, January, 2014, and will be apply to ships contracted for construction after 1st July 2015. It is necessary to verify the H-CSR to optimize the structural arrangement because effective date is not far off. In this study, we compared the impact by rule change for the hull girder shear strength of bulk carriers between CSR and H-CSR in respect of the yielding and buckling strength.

• 한국건설순환자원학회논문집
• /
• 제8권4호
• /
• pp.590-595
• /
• 2020

본 연구에서는 해일표류선박의 충돌이 해일피난건물로 선정된 철근콘크리트 건축물의 안전성에 미치는 영향을 파악하기 위하여, 충돌속도, 선박의 질량 및 선박의 길이를 변수로 한 진자를 이용한 축소 충돌실험을 실시하여, 건축물의 응답에 영향을 미치는 최대 충돌력, 충돌시간, 충돌파형 형상, 반발계수 등에 대한 기본적인 물리량 변동추이를 상세히 평가하였다. 그 결과, 충돌파형 형상은 대부분의 실험결과에서 삼각형 분포가 나타났으나, 충돌실험체의 길이의 증가에 따라 사다리꼴에 가까워지는 것을 알 수 있었다. 이는 건축물의 응답에 영향을 미치는 충격량 (충돌력 파형의 면적)을 산정함에 있어 매우 중요한 결과이다. 또한 반발계수는 충돌속도의 대소에 관계없이 일정하나, 충돌체의 질량 및 길이에 의해 변화하며, 단위길이당 질량으로 정리하면 반발계수의 변동이 평가가능함을 알 수 있었다.

• International Journal of Naval Architecture and Ocean Engineering
• /
• 제13권1호
• /
• pp.405-430
• /
• 2021

Production planning is a key part of production management of manufacturing enterprises. Since computerization began, modern production planning has been developed starting with Material Requirement Planning (MRP), and today Enterprise Resource Planning (ERP), Advanced Planning and Scheduling (APS), Supply Chain Management (SCM) has been spreading and advanced. However, in the shipbuilding field, rather than applying these general-purpose production planning methodologies, in most cases, each shipyard has developed its own production planning system. This is because the applications of general-purpose production planning methods are limited due to the order-taking industry such as shipbuilding with highly complicated construction process consisting of millions of parts per ship. This study introduces the design and development of the production planning system reflecting the production environment of heavy shipyards in Korea. Since Korean shipyards such as Hyundai, Daewoo and Samsung build more than 10 ships per year (50-70 ships in the case of large shipyards), a planning system for the mixed production with complex construction processes is required. This study draws requirements using PI/BPR (process innovation and business process reengineering) methodology to develop a production planning system for shipyards that simultaneously build several ships. Then, CBD software development methodology was applied for the design and implementation of planning system with drawn requirements. It is expected that the systematic development procedure as well as the requirements and functional elements for the development of the shipyard production planning system introduced in this study will be able to present important guidelines in the related research field of shipbuilding management.

• 한국산업융합학회 논문집
• /
• 제25권1호
• /
• pp.79-86
• /
• 2022

In general, since the types and types of ships, so complex and various variables are included to measure the amount of construction work. In addition, it is mot easy to predict the schedule or the number of working hours before ship construction, and it is also mostly inaccurate. As a result, the master plan is manually drawn up by the expert's experience, but there are limitations due to various factors. Medium and large shipyards are operating APS(Advanced Planning and Scheduling) system that reflects industrial characteristics to improve productivity in the planning stage, and utilize information from systems such as ERP(Enterprise Resource Planning) system and MES (Manufacturing Execution System). On the other hand, small shipyards rely mostly on manual work such as Excel work based on the experience of the workers. Therefore, this study intends to develop a master plan management system that can efficiently manage the production process from the business planning stage in consideration of the characteristics of small shipyards.

• 한국항만학회지
• /
• 제7권2호
• /
• pp.37-60
• /
• 1993

Because of the rapid growing traffic volumes of cargo, especially between Seoul and Inchon, and lack of investment into transport infrastructure in the past, in Kyong-in area have suffered from the serious traffic congestion in the public-road and the express-way network, But the further expansion of the traffic volume in near future is difficult due to burden of the higher expansion of the traffic volume in near future is difficult due to burden of the higher construction cost. Although the traffic congestion on the Kyung-in railway, is not very serious comparing with the road sector, the shortage of capacity on some main lines becomes emerged as a problem as railway traffic has increased. Unlike these two modes, the water transport, which has been paid relatively less attention for commodity transport in Kyong-in area, has not any constaint in this respect. Han river has been used as a water transport route in Chosun Dynasty which is called Cho-wun. This paper therefore aims to propose the availability of Han river as the alternative water transportation mode, in order to decrease the congestion between Seoul-Inchon by considering the construction of Kyong-in artificial water channel in near future. In this paper, we investigate the availability of Nanji-do as the physical distribution depot connecting with the circulation express way in the national capital distribution depot connecting with the circulation express way in the national capital. We also estimate the traffic volume by using the push-barge carrier (300DWT) in the same channel through the simulation under some assumptions such as ship's turnaround time, speed, etc.

• Structural Monitoring and Maintenance
• /
• 제10권1호
• /
• pp.25-42
• /
• 2023

Despite the significance of ports as critical economic infrastructure, the berth facilities usually deteriorate due to heavy loading, unloading, aging, environmental weather conditions, marine growths, and lack of efficient maintenance management. Marine berths require proactive maintenance management to limit deterioration and defects as no berth facility is maintenance-free. Thus, delay in carrying out maintenance work for the marine berths can be devastating to the operational process involving ship entry, loading, and unloading operations. The aim of this research is to coordinate both operations work, and maintenance works that take place inside the berth of a local industrial port in Saudi Arabia, by developing a novel framework that integrates both works without affecting the efficiency and functionality of the berth. The study focused on defining the operational process of the port and identifying the elements with direct and indirect effects. In addition to determining the priority for the entry of ships inside the berth, it also identified the factors involved in designing a framework that included maintenance work as a component of the monthly berth occupancy schedule. By applying a mathematical model, a framework was established, which includes all the important elements of the process. As a result of the mathematical method formulation process, a database was designed that organizes and coordinates the operations of all berths within the port. This creates time to carry out the required maintenance work monthly as well as ease of coordination with the contractors responsible for the implementation of those works.