Pub Date : 1986-04-01DOI: 10.5957/MT1.1986.23.2.165
Eric W. Sponberg
Apercu de l'approche correcte de la conception et de la realisation de la coque d'un bateau a voile. Discussion des resultats d'essais de flexion et de choc effectues sur des stratifies pour coque a base de verre et de fibres de carbone
概述帆船船体设计和建造的正确方法。讨论玻璃和碳纤维壳层板的弯曲和冲击试验结果
{"title":"Carbon Fiber Sailboat Hulls: How to Optimize the Use of an Expensive Material","authors":"Eric W. Sponberg","doi":"10.5957/MT1.1986.23.2.165","DOIUrl":"https://doi.org/10.5957/MT1.1986.23.2.165","url":null,"abstract":"Apercu de l'approche correcte de la conception et de la realisation de la coque d'un bateau a voile. Discussion des resultats d'essais de flexion et de choc effectues sur des stratifies pour coque a base de verre et de fibres de carbone","PeriodicalId":49310,"journal":{"name":"Marine Technology and Sname News","volume":null,"pages":null},"PeriodicalIF":0.0,"publicationDate":"1986-04-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"78057084","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 1986-01-01DOI: 10.5957/MT1.1986.23.1.35
Grant R. Hagen, E. Comstock, J. Slager
All available correlation data for naval ships painted to modern standards have been analysed, and a formula for the correlation allowance is derived; this incorporates a term based on ship length, and generally gives a value for the correlation allowance less than the figure of 0.0005 currently in general use. The impact of applying this figure to the determination of the speed-power margin is discussed; the recommended values for the margin at the various design stages are the same as those adopted in current practice.
{"title":"INVESTIGATION OF DESIGN POWER MARGIN AND CORRELATION ALLOWANCE FOR SURFACE SHIPS","authors":"Grant R. Hagen, E. Comstock, J. Slager","doi":"10.5957/MT1.1986.23.1.35","DOIUrl":"https://doi.org/10.5957/MT1.1986.23.1.35","url":null,"abstract":"All available correlation data for naval ships painted to modern standards have been analysed, and a formula for the correlation allowance is derived; this incorporates a term based on ship length, and generally gives a value for the correlation allowance less than the figure of 0.0005 currently in general use. The impact of applying this figure to the determination of the speed-power margin is discussed; the recommended values for the margin at the various design stages are the same as those adopted in current practice.","PeriodicalId":49310,"journal":{"name":"Marine Technology and Sname News","volume":null,"pages":null},"PeriodicalIF":0.0,"publicationDate":"1986-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"84877810","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 1985-07-01DOI: 10.5957/MT1.1985.22.3.211
D. Amick, R. Hamilton, C. Shields
The Rigid Inflatable Boat (RIB) was originally developed as a gasoline outboard powered craft for surf zone rescue use by the Royal National Lifeboat Institution in the United Kingdom. The objectives were to provide a craft with extremely good stability characteristics to operate in steep onshore breaking waves without capsizing, and to improve the safety of operations alongside other vessels. The data acquired confirmed the theoretical performance predicted during the the feasibility studies. This first RIB was deployed on a U.S. Navy DDG-993 Class ship utilising an existing single-point davit. During that deployment, the RIB was launched and retrieved successfully at ship's speeds up to 12 knots. Early indications are that this development program will result in a new ship's boat and an accompanying davit system which will provide the Fleet with a safe, high-performance craft which will greatly enhance operational capability and safety, and substantially reduce topside weight. The enthusiasm of test and Fleet personnel who have operated the RIB attests to its superior performance and to a high degree of probability for success of the program.
{"title":"DEVELOPMENT OF RIGID INFLATABLE BOATS FOR U.S. NAVY SHIPBOARD USE","authors":"D. Amick, R. Hamilton, C. Shields","doi":"10.5957/MT1.1985.22.3.211","DOIUrl":"https://doi.org/10.5957/MT1.1985.22.3.211","url":null,"abstract":"The Rigid Inflatable Boat (RIB) was originally developed as a gasoline outboard powered craft for surf zone rescue use by the Royal National Lifeboat Institution in the United Kingdom. The objectives were to provide a craft with extremely good stability characteristics to operate in steep onshore breaking waves without capsizing, and to improve the safety of operations alongside other vessels. The data acquired confirmed the theoretical performance predicted during the the feasibility studies. This first RIB was deployed on a U.S. Navy DDG-993 Class ship utilising an existing single-point davit. During that deployment, the RIB was launched and retrieved successfully at ship's speeds up to 12 knots. Early indications are that this development program will result in a new ship's boat and an accompanying davit system which will provide the Fleet with a safe, high-performance craft which will greatly enhance operational capability and safety, and substantially reduce topside weight. The enthusiasm of test and Fleet personnel who have operated the RIB attests to its superior performance and to a high degree of probability for success of the program.","PeriodicalId":49310,"journal":{"name":"Marine Technology and Sname News","volume":null,"pages":null},"PeriodicalIF":0.0,"publicationDate":"1985-07-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"82970233","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 1985-04-01DOI: 10.5957/MT1.1985.22.2.142
D. W. Czimmek, L. W. Sandor
This paper is an objective evaluation of the feasibility of copper-nickel sheathing as a protection against biofouling for ship hulls. The first part of the paper covers the economic feasibility of Cu-Ni sheathing. An economic analysis was performed for trade-off purposes using the life-cycle method. Three different antifouling systems were analyzed for this purpose: conventional antifouling paint, self-polishing copolymer, and Cu-Ni sheathing. In this analysis two ship types were considered, a medium-speed roll-on/roll-off vessel and a slow-speed crude oil carrier. In the second part of the paper the technical feasibility of Cu-Ni sheathing is evaluated. The current technology is discussed for the physical application of Cu-Ni sheathing to the hull, including several methods of attaching the sheathing. Current test results on the Cu-Ni sheathing test panels installed on the tanker Arco Texas are presented and new cost-effective welding techniques for Cu-Ni sheathing of ship hulls are proposed.
{"title":"ECONOMIC AND TECHNICAL FEASIBILITY OF COPPER-NICKEL SHEATHING OF SHIP HULLS","authors":"D. W. Czimmek, L. W. Sandor","doi":"10.5957/MT1.1985.22.2.142","DOIUrl":"https://doi.org/10.5957/MT1.1985.22.2.142","url":null,"abstract":"This paper is an objective evaluation of the feasibility of copper-nickel sheathing as a protection against biofouling for ship hulls. The first part of the paper covers the economic feasibility of Cu-Ni sheathing. An economic analysis was performed for trade-off purposes using the life-cycle method. Three different antifouling systems were analyzed for this purpose: conventional antifouling paint, self-polishing copolymer, and Cu-Ni sheathing. In this analysis two ship types were considered, a medium-speed roll-on/roll-off vessel and a slow-speed crude oil carrier. In the second part of the paper the technical feasibility of Cu-Ni sheathing is evaluated. The current technology is discussed for the physical application of Cu-Ni sheathing to the hull, including several methods of attaching the sheathing. Current test results on the Cu-Ni sheathing test panels installed on the tanker Arco Texas are presented and new cost-effective welding techniques for Cu-Ni sheathing of ship hulls are proposed.","PeriodicalId":49310,"journal":{"name":"Marine Technology and Sname News","volume":null,"pages":null},"PeriodicalIF":0.0,"publicationDate":"1985-04-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"83030534","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 1984-10-01DOI: 10.5957/MT1.1984.21.4.319
R. Baseler
{"title":"Design, Construction, and Operation of a 36 250-ST Self-Unloading Collier with a Coal-Fired Steam Plant","authors":"R. Baseler","doi":"10.5957/MT1.1984.21.4.319","DOIUrl":"https://doi.org/10.5957/MT1.1984.21.4.319","url":null,"abstract":"","PeriodicalId":49310,"journal":{"name":"Marine Technology and Sname News","volume":null,"pages":null},"PeriodicalIF":0.0,"publicationDate":"1984-10-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"73198084","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 1983-07-01DOI: 10.5957/MT1.1983.20.3.283
A. Troesch, R. Vangunst, S. Lee
To obtain a fuller understanding of the aerodynamics of semi- submersibles, a research project was undertaken in which a 1:115 scale model of a semisubmersible was tested, in the transit and the drilling configurations, in a wind tunnel at the University of Michigan. The work included measuring the model's drag coefficient and centroid of lateral force, determining the wind angle that gave the largest drag force and overturning moment at zero heel , and several other tasks. After discussing the problem and describing the techniques used in this experimental work, the Authors discuss the work and its results under the headings: Reynolds Number Effect; Influence of Boundary-Layer Profile; Drag and Height Coefficients for Zero Heel Angle; Evaluation Angle; Evaluation of Various Test Techniques; Contribution of Various Components to the Total Drag - Calculation and Experiment. Among the conclusions, it is mentioned that the drag and height coefficients at the critical wind direction were somewhat overpredicted by the ABS Rules, and that the results suggest that more research is required before the complex interaction effects of an ocean structure's various components are completely understood.
{"title":"WIND LOADS ON A 1: 115 MODEL OF A SEMISUBMERSIBLE.","authors":"A. Troesch, R. Vangunst, S. Lee","doi":"10.5957/MT1.1983.20.3.283","DOIUrl":"https://doi.org/10.5957/MT1.1983.20.3.283","url":null,"abstract":"To obtain a fuller understanding of the aerodynamics of semi- submersibles, a research project was undertaken in which a 1:115 scale model of a semisubmersible was tested, in the transit and the drilling configurations, in a wind tunnel at the University of Michigan. The work included measuring the model's drag coefficient and centroid of lateral force, determining the wind angle that gave the largest drag force and overturning moment at zero heel , and several other tasks. After discussing the problem and describing the techniques used in this experimental work, the Authors discuss the work and its results under the headings: Reynolds Number Effect; Influence of Boundary-Layer Profile; Drag and Height Coefficients for Zero Heel Angle; Evaluation Angle; Evaluation of Various Test Techniques; Contribution of Various Components to the Total Drag - Calculation and Experiment. Among the conclusions, it is mentioned that the drag and height coefficients at the critical wind direction were somewhat overpredicted by the ABS Rules, and that the results suggest that more research is required before the complex interaction effects of an ocean structure's various components are completely understood.","PeriodicalId":49310,"journal":{"name":"Marine Technology and Sname News","volume":null,"pages":null},"PeriodicalIF":0.0,"publicationDate":"1983-07-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"87548663","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 1982-10-01DOI: 10.5957/MT1.1982.19.4.341
C. Zumwalt
{"title":"OPTIMAL PRELIMINARY SELECTION OF MOBILE OFFSHORE DRILLING UNITS","authors":"C. Zumwalt","doi":"10.5957/MT1.1982.19.4.341","DOIUrl":"https://doi.org/10.5957/MT1.1982.19.4.341","url":null,"abstract":"","PeriodicalId":49310,"journal":{"name":"Marine Technology and Sname News","volume":null,"pages":null},"PeriodicalIF":0.0,"publicationDate":"1982-10-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"79284882","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 1982-10-01DOI: 10.5957/MT1.1982.19.4.364
L. Harlander
{"title":"Container System Design Developments Over Two Decades","authors":"L. Harlander","doi":"10.5957/MT1.1982.19.4.364","DOIUrl":"https://doi.org/10.5957/MT1.1982.19.4.364","url":null,"abstract":"","PeriodicalId":49310,"journal":{"name":"Marine Technology and Sname News","volume":null,"pages":null},"PeriodicalIF":0.0,"publicationDate":"1982-10-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"86859446","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 1981-07-01DOI: 10.5957/MT1.1981.18.3.264
N. Bales
{"title":"Optimum Freeboard: A Critical Reassessment of the Balanced-Ship Concept","authors":"N. Bales","doi":"10.5957/MT1.1981.18.3.264","DOIUrl":"https://doi.org/10.5957/MT1.1981.18.3.264","url":null,"abstract":"","PeriodicalId":49310,"journal":{"name":"Marine Technology and Sname News","volume":null,"pages":null},"PeriodicalIF":0.0,"publicationDate":"1981-07-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"83004142","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
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