Showing papers on "Shipbuilding published in 1970"
7 citations
TL;DR: In this paper, conditions for laser welding implementation are specified, several joints applied in construction of ship hulls are presented and problems of new technologies application are discussed, and several new technologies are discussed.
Abstract: The development of high power laser technology has enabled the production of modern structures, capable of providing adequate strength for ship construction. In the paper conditions for laser welding implementation are specified, several joints applied in construction of ship hulls are presented and problems of new technologies application are discussed.
7 citations
2 citations
TL;DR: The author shows how this approach could be used as a basis for ship survivability requirements and proposes a methodology for the simulation of the sea voyage taking into account the human factor and including risk assessment.
Abstract: Study of the history of the development of ship safety requirements reveals that work on the development of safety rules was always initiated as a result of tragic disasters. Public outcry at the lives lost forced the authorities to set up more stringent standards of ship construction. A classic example of this was the development of the first SOLAS Convention after the TITANIC disaster and also, quite recently, the establishment of new requirements for ro-ro vessels after the ESTONIA casualty. This method of establishing safety rules could be called "trial and error method". The author advocates a different approach to safety requirements. This approach entails relating safety considerations to the risk involved during the sea voyage. In the present situation actual risk for individual ships meeting all of the current safety standards may be widely different as has been shown by some examples. Moreover, present regulations relate mainly to the constructional features of ships, whereas the great majority of sea casualties are caused by human failure. At present, safety assessment is required in many fields of technology and this is used as a basis for the project's evaluation. The author shows how this approach could be used as a basis for ship survivability requirements and proposes a methodology for the simulation of the sea voyage taking into account the human factor and including risk assessment. In the opinion of the author the methodology described is fully feasible.
2 citations
TL;DR: In this article, the authors provide adequate answers for basic questions concerning the Brazilian shipbuilding industry such as its viability and potential as an economic lever as well as the possibilities for the establishment of a self-sustained growth basis out of the existing and future home and world demand.
Abstract: The paper aims to provide adequate answers for basic questions concerning the Brazilian shipbuilding industry such as its viability and potential as an economic lever as well as the possibilities for the establishment of a self-sustained growth basis out of the existing and future home and world demand. The paper describes the industry evolution considering the underlying conception from its creation within the mid-50's target plan, the two national development plans under military rule up to recent governmental and entrepreneurial moves by approaching market tendencies and the present institutional models.
2 citations
TL;DR: In this paper, the authors investigated the feasibility of using a floating dry dock for ship launching and found that it has significant economic and operational advantages over traditional sliding ways and recently developed basin-type graving docks.
Abstract: Modern techniques of mechanized, prefabricated shipbuilding are compatible with a method of ship launching using a floating dry dock. This system has significant economic and operational advantages over traditional sliding ways and recently developed basin-type graving docks. Investigated by the Bechtel Corp. as part of Lockheed Shipbuilding and Construction Co.'s new shipyard study program for the Navy's Fast Deployment Ship Project, the floating dock launch method is a revival of an approach used successfully over a century ago in this country and now being reconsidered in connection with new shipbuilding techniques. The floating dry dock method was compared with others, historical applications reviewed, an operational description presented, significant design parameters considered, practicable alternatives analyzed, possible hazards evaluated, and available testing methods described. With its structural flexibility, the floating dry dock launching method appears to be applicable to all sizes and types of ships with conventional hulls. Additionally, without extensive modification, such a dock could be used between launchings for ship repair purposes.
1 citations
30 Sep 1970
1 citations
01 Jan 1970
TL;DR: In this paper, the authors trace the history of the discipline of weight engineering through the development of water transportation, and conclude that weight engineers are a dynamic part of the total engineering and management force collected in the shipbuilding effort and will be required to find new and better ways to maintain an effective program as traditional concepts of ship design and construction yield to new methods.
Abstract: : The discipline of weight engineering is traced through the history of man's development of water transportation. The awareness by early shipwrights of weight problems is presented by citing significant advances in the state of the art of shipbuilding. As counterpoint, the evolution of weight engineering is discussed from its beginnings as a subconscious consideration in early history through development of weight reporting as an engineering tool and ending as a relatively rigorous discipline involving the control of weight through the ability to make accurate and long range predictions of complex ships. Weight control is also identified with the role of the project manager of today by citing how it can be used as a management tool. The paper concludes that weight engineers are a dynamic part of the total engineering and management force collected in the shipbuilding effort. As such, they will be required to find new and better ways to maintain an effective program as traditional concepts of ship design and construction yield to new methods. (Author)
TL;DR: The history of the discipline of weight engineering is traced through the history of man's development of water transportation and the awareness by early shipwrights of weight problems is presented by citing significant advances in the state of the art of shipbuilding as discussed by the authors.
Abstract: The discipline of weight engineering is traced through the history of man's development of water transportation. The awareness by early shipwrights of weight problems is presented by citing significant advances in the state of the art of shipbuilding. As counterpoint, the evolution of weight engineering is discussed from its beginnings as a subconscious consideration in early history through development of weight reporting as an engineering tool and ending as a relatively rigorous discipline involving the control of weight through the ability to make accurate and long range predictions of complex ships. Weight control is also identified with the role of the project manager of today by citing how it can be used as a management tool. The paper concludes that weight engineers are a dynamic part of the total engineering and management force collected in the shipbuilding effort. As such, they will be required to find new and better ways to maintain an effective program as traditional concepts of ship design and construction yield to new methods.