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DP Integration and technology growth on workboats
AuthorsJack Rowley
Shelf Location225f
AbstractA brief history of DP implementation on workboats is given. Current DP status and DP class notation or certification is summarised and a table showing the different classification designations for ABS DNV Lloyds and IMO shown. The technical developments affecting the DP market and DP integration with ship systems DP as part of the design criteria DP integration with automation impact on vessel cost and the future of DP on workboats are all discussed.
AuthorsDate publishedJack Rowley
2002
Shelf Location225f
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Effect of axial force on allowable free spans of submarine pipelines
AuthorsS Kapuria ; V Y Salpekar ; S Sengupta
PublisherInternational Society of Offshore and Polar Engineers
AbstractAnalytical solutions are presented for computing allowable static and dynamic free spans of submarine pipelines supported on elastic soil bed subjected to axial and transverse loads. The governing equations for both static and free vibration analysis yielded nonlinear algebraic equations for allowable spans. The effect of axial force on the allowable free span was investigated for different values of soil stiffness factor. The translational and rotational spring model for support was compared with the model of beam on elastic foundation.
AuthorsDate publishedS Kapuria ; V Y Salpekar ; S Sengupta
1998
PublisherInternational Society of Offshore and Polar Engineers
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Effect of directional spreading and spectral bandwidth on the nonlinearity of the irregular waves
AuthorsM Prevosto
PublisherInternational Society of Offshore and Polar Engineers
AbstractSimple models of wave kinematics have been studied based on the hypotheses of narrowband and unidirectionality. A second order directional irregular wave model was used to simulate time series of the free surface elevation. Based on a large simulated database a parametric study of the influence of the spectral width and directional spreading was carried out on several wave characteristics sensitive to nonlinearities. Three typical situations were analysed which correspond to extreme situations in long and short fetch wind sea.
AuthorsDate publishedM Prevosto
1998
PublisherInternational Society of Offshore and Polar Engineers
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Effects of seepage flows on sediment transport rates
AuthorsC O'Donnell ; B A O'Connor ; K H M Ali
Date published2002
AbstractPrevious work on the effect of seepage force through a sediment bed has shown that there is likely to be little effect upon sediment transport rates. An experimental study is described which has been carried out to examine the effects of increasing levels of seepage flow from a sand bed on bed load transport rates. Significantly this experimental study also examines the effect of sand bed failure on sediment transport rates to assess whether this phenomenon could be a contributory factor in large-scale coastal erosion such as that witnessed at Sines. The experiments are described and results and conclusions are presented.
AuthorsC O'Donnell ; B A O'Connor ; K H M Ali
Date published2002
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Eleven crew perish in fire on board fishing factory trawler
AuthorsMER
PublisherIMarEST
AbstractOn 20 April 2007 a fire broke out in a storage hold on board the 7805gt Faroese factory trawler Hercules. The vessel was fishing in the South Pacific ocean at the time. According to the casualty investigation report of the Danish Maritime Authority the fire broke out in the hold on the first deck when arcing occured in one or more recently fitted fluorescent light fitting.
AuthorsDate publishedMER
2009
PublisherIMarEST
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Engineering fluid mechanics
AuthorsJ A Roberson ; C T Crowe
Shelf Location209c
AbstractThe book covers flow patterns and associated topics on velocity and acceleration in an early chapter on kinematics, pressure variation in a flowing fluid and shear stress distribution in a chapter on surface resistance. Chapters follow on drag and lift, flow meters, compressible flow, pipe flow and open channel flow. Half of the text is focused on basic principles and the other half on the applications of these principles to engineering problems.
AuthorsPublisherJ A Roberson ; C T Crowe
Boston ; Houghton Mifflin Company
Shelf LocationDate published209c
1975
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Estimating the impact of new generation antifoulings on ship performance: the presence of slime
AuthorsM Candries ; M Atlar ; C D Anderson
PublisherIMarEST
AbstractThis paper provides an overview of research at Newcastle University which compares the drag boundary layer and roughness characteristics of both tin-free SPC and foul-release coatings when newly applied. It was found that foul-release coatings offer less drag that the tin-free SPC. A literature review on the effect of slime films on ship resistance shows that slime films have a significant effect on drag but in turbulent flows the effect is likely to remain limited because of detachment processes.
AuthorsDate publishedM Candries ; M Atlar ; C D Anderson
2003
PublisherIMarEST
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Experimental study on directional wave and current on reef
AuthorsTetsuya Hiraishi
Date published2001
AbstractSome of the many isolated islands located in the northern Pacific are composed of small rigid rocks and atoll reefs. The water areas surrounded by such atoll reefs are suitable for the installation of a field research base for fishery environmental and natural resources. A model study is described to estimate the wave heights and periods in water areas surrounded by atoll reefs in an isolated island located in a deep sea. The offshore wave heights forecasting and experimental works to obtain the transformed wave parameters are discussed.
AuthorsTetsuya Hiraishi
Date published2001
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Exploring the effects of SCR on a two-stroke engine
AuthorsMER
Date published1994
AbstractResults from a joint research project by New Sulzer Diesel Mobil Oil and Lloyd's Register on applying Selective Catalytic Reduction (SCR) to low-speed two-stroke engines operating on heavy fuel oil. Tests were performed on a Sulzer RTA38 engine and show that NOx emissions can be reduced by as much as 90% using urea as the reducing agent. Problems with the system include sulphur-induced corrosion deposition of ammonium sulphate and anhydride and adsorption of SOx in the catalyst carrier. Further research using a metal catalyst substrate is planned. Some initial costings are given.
AuthorsMER
Date published1994
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Fleet and operation planning based on the ship design and logistic simulation
AuthorsHiroyuki Yamato ; Yasutomo Yamauchi ; Kenji Tanaka et al.
Date published2002
AbstractA methodology is presented for the design of a fleet and its operation on a route where other modes are competing with each other. The method brings together the logistic survey ship design and simulation on the computer. Ship design operational costs and freight route data and modal split by the sacrifice model are all taken into account. Simulation over time is used for the operational design and discount cash flow is used for evaluating the project. Finally a case study is presented on Tokyo-Hokkaido fast ferry service.
AuthorsHiroyuki Yamato ; Yasutomo Yamauchi ; Kenji Tanaka et al.
Date published2002
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Further Experiments on the Sealing Mechanism of a Synthetic Rubber Lip Type Seal Operating on a Rotating Shaft
AuthorsE T Jagger
Date published1973
AbstractThis paper shows that a seal of the type referred to operates under hydrodynamic lubrication conditions with a liquid film thickness of about 0.5æm. The paper concludes that the liquid film is prevented from leaking by the surface tension of the liquid itself.
AuthorsE T Jagger
Date published1973
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Great Britain Royal Commission on Environmental Pollution. Sixth Report. Nuclear Power and the environment
AuthorsB Flowers
Shelf Location226c
AbstractThis report aims to advise on matters, both national and international, concerning the pollution of the environment; on the adequacy of research in this field, and the future possibilities of danger to the environment. This study focus mainly on the nuclear power in the United Kingdom.
AuthorsPublisherB Flowers
HMSO
Shelf LocationDate published226c
1976
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Hydrodynamic forces on partly buried pipelines in waves/current
AuthorsS Cokgor ; I Avci
PublisherInternational Society of Offshore and Polar Engineers
AbstractThe forces on a cylinder laid on or partly buried in the sea bed were determined by measuring the pressure distribution on the cylinder surface in the case of steady current pure wave and combined wave and current. Force coefficients for in-line and lift forces were obtained.
AuthorsDate publishedS Cokgor ; I Avci
1998
PublisherInternational Society of Offshore and Polar Engineers
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ICSW guidelines on Seafarers' Welfare Convention No. 163 (1987) and Recommendation No. 173 (1987)
AuthorsInternational Committee on Seafarers' Welfare
Shelf Location226a
AbstractThis guide is intended to assist with the interpretation and implementation of the two principal instruments adopted by the International Labour Organisation covering seafarers’ welfare, the Convention on Seafarers’ Welfare No. 163 (1987) and Recommendation on Seafarers’ Welfare No. 173 (1987). The Guide is intended for the use of administrations, national or port welfare agencies, the voluntary welfare societies and others concerned with the provision of welfare services and facilities for seafarers.
AuthorsPublisherInternational Committee on Seafarers' Welfare
ICSW
ISBN number953925005
Shelf LocationDate published226a
1988
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Investigation on regional differences of recent bunker fuel oil quality and combustion troubles
AuthorsH Amatsu
Date published1992
AbstractDuring 1989 Mitsui OSK Ltd sampled and analysed all bunkers (marine diesel residual) taken on by their vessels and created a data base in which details on fuel and bunkering ports are stored alongside ship particulars and engine performance records. Results of studies on the data base include - world regional differences in fuel compositions; incidence of combustion problems with slow speed two stroke main engines and correlation with fuel type; association of high asphaltene fuels with combustion troubles.
AuthorsH Amatsu
Date published1992
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On the Effect of Some Uncertainties on the Structural Integrity Assessment of Corroding Pipelines
AuthorsJ Wolfram ; N Yahaya
Date published1999
AbstractThe most widely used method for the structural integrity assessment of corroded pipelines is the ASME B31G procedure that employs deterministic criteria. However there is usually considerable uncertainty concerning the shape and size of corrosion defects because of the limitations of the measurement techniques and therefore a statistical or probabilistic approach to structural integrity may be more appropriate. Effort has recently been put into developing such procedures and the research described in this paper has been directed towards that end.
AuthorsJ Wolfram ; N Yahaya
Date published1999
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Progress on guidance on fires and explosions
AuthorsSteve Walker ; Graham Morrison
Date published2003
AbstractThe progress in the development of new guidance in fire and explosion engineering worldwide is reviewed. The three main documents currently under development are discussed compared and contrasted. These three documents are: the three-phase project sponsored by UKOOA and the HSE to develop up-dated guidance for the treatment of fire and explosions; ISO development of a standard dealing with accidental actions as part of ISA CD-19901-3. API recommended practice for the design of offshore facilities against fire and blast loading.
AuthorsSteve Walker ; Graham Morrison
Date published2003
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Report on Tests Concerning Fires in Ships' Corridors
Shelf Location227b
PublisherDenmark, 1958
AbstractThe report describes and considers the fairly searching investigations caused to be undertaken by the Directorate of the Government Ships Inspection Service and the State Testing Laboratory – in particular by the Committee appointed by the Directorate – assisted by the Association of Shipyards, the Shipowners’ Association and the Fire Protection Committee for the purpose of examining the influence that exposed surfaces may have on the development of fire in ships. Contents include: Summary of development since 1952; Report on Full Scale Tests; Report on Laboratory Tests; Analysis of full scale test results; Analysis of Laboratory Tests Results and comparison with Full Scale test results; Final Remarks. Accompanying the Report there is another volume with the Appendices and a Summary of the Report.
Shelf LocationDate published227b
1958
PublisherDenmark, 1958
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Requirements made on general cargo and bulk freighters
AuthorsA Cumin
Date published1996
AbstractAn overview of the marine transport of dry and bulk cargoes by general cargo vessels bulkcarriers and specialist ships (containerships roro reefers) is presented with discussion of: categories and data on trade volumes (including major bulk minor bulk dry); forecast of newbuilding requirements; statistics on world dry cargo fleet and on ship losses; and critical discussion of the relatively high casualty rates causes of failure and safety initiatives.
AuthorsA Cumin
Date published1996
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Resonance phenomenon developed by breakwater or breakwater fixed on piles
AuthorsC Colmard ; M Belorgey ; P Roger
Date published1997
AbstractA lot of problems occur when the protected setting is in deep water. Many new systems were created like floating caissons immersed flags caissons fixed on piles ARION systems and AGRIPEL absorbers. An attempt is made to show that these breakwater types can present resonance phenomena developing when the protected setting is not completely absorbing. A simple calculation method of these phenomena is described and applied to the "Fixed water wall" phenomenon developed by caissons fixed on piles.
AuthorsC Colmard ; M Belorgey ; P Roger
Date published1997