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SOLAS requirements on bulk carrier safety
AuthorsK Hui
Shelf Location213d
AbstractIn November 1997 a SOLAS Conference on bulk carrier safety was convened and introduced a new chapter XII to the 1974 SOLAS Convention. The new Chapter XII requires bulk carriers of certain size and type to meet additional safety requirements. Firstly the Amendment to the SOLAS 1974 is looked at followed by the process of making the amendments. After this future work on the safety of bulk carriers is outlined.
AuthorsDate publishedK Hui
1998
Shelf Location213d
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Spatial development on a beach plain: stop or continue?
AuthorsR Steijn ; H de Kruik ; J Holleman
Date published2005
AbstractFollowing extreme river discharges of the Rhine and the Meuse in 1995 causing serious flooding in the Netherlands the Dutch national policy on development and new investment in vulnerable areas was changed. Development of areas such as the large beach plain "Kennemerstrand" were stopped. All stakeholders including the local administration and private developers were consulted and determined to a large extent the choices that were made. The decision-making depending on the technical information but alsoshowed to have its own dynamics.
AuthorsR Steijn ; H de Kruik ; J Holleman
Date published2005
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Spatial variability of wave conditions on the French Atlantic Coast using in-situ data
AuthorsRemi Butel ; Helene Dupuis ; Philippe Bonneton
Date published2002
AbstractAn attempt is made to provide a statistical description of wave conditions on the French Atlantic coast. Attention is given to the larger scale wave variability which is needed to identify the waves climate in the area. An attempt is made to illustrate large spatial scale changes in the wave properties along the coast. Also extreme events probability which have drastic effects on the coastlines are investigated. After some introductory information a look is taken at the materials followed by the methods and the results. Lastly classification is considered.
AuthorsRemi Butel ; Helene Dupuis ; Philippe Bonneton
Date published2002
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Stabilisation
Date published1995
AbstractA series of articles on stabilisation include: The effective solution for global stabilisation (a discussion of roll reduction techniques which favours a combination of fins tanks and rudders); Unique counter-oscillating mass cuts rolling to a third (review of tests carried out by IHI in Japan on a model of a unique anti-rolling device based on a counter-oscillating mass riding on a pair of arched rails); Yard inclining tests done in less than 10min (Intering's stability test system used at Finnyards for the first time on TT-Line's ferry Robin Hood); Ride control of T-foil fast ferries (a review of Maritime Dynamic Inc's ride control systems).
Date published1995
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Statistical properties of non-linear Froude-Krylov forces on cylinders
AuthorsFelice Arena ; Francesco Fedele
Date published2001
AbstractThe statistical properties of the second-order Froude-Krylov force on a cylinder (whether a vertical cylinder or a horizontal submerged cylinder) for narrow-band spectra are investigated. For this purpose two families of stochastic processes are defined and for each family the probability density function and the probabilities of exceedance of the absolute maximum and of the absolute minimum are obtained. It is then proven that the above-mentioned Froude-Krylov force processes belong to these stochastic families. The predictions for the Froude-Krylov force on a horizontal submerged cylinder agree with the results of a small-scale field experiment.
AuthorsFelice Arena ; Francesco Fedele
Date published2001
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Structural response of pipeline free spans based on beam theory
AuthorsOlav Fyrileiv ; Kim Mork
Date published2002
AbstractOne of the main risk factors for subsea pipelines exposed on the seabed is fatigue failure of free spans due to ocean current or wave loading. This paper describes how the structural response of a free span as input to the fatigue analyses can be assessed in a simple and still accurate way by using improved beam theory formulations. The paper focuses on estimation of simplified response quantities such as lower natural frequencies and associated mode shapes.
AuthorsOlav Fyrileiv ; Kim Mork
Date published2002
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The effect of rotor blade sweep on the performance of the Wells turbine
AuthorsM Webster ; L M C Gato
PublisherInternational Society of Offshore and Polar Engineers
AbstractAn experimental investigation into the effect of rotor blade sweep on the performance of the Wells turbine is presented. The aim of the experiments was to investigate and compare the aerodynamic performance of the backward swept and unswept blades. It was shown that the swept back design of the blades had a positive value of efficiency and torque over a much wider operating range than standard unswept blades. Turbine models were also fitted with guide vanes to investigate its effect on overall turbine performance.
AuthorsDate publishedM Webster ; L M C Gato
1998
PublisherInternational Society of Offshore and Polar Engineers
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The Elastic Deformation of "Mega-Float'' and Its Effect on the GP (Glide Path) Course Structure
AuthorsH Yokoyama
Date published2001
AbstractThe "Mega-Float" is a gigantic steel floating structure for aeroplanes on the sea. This paper discusses the variation in the GP (Glide Path) course of the Mega-Float subjected to elastic deformation due to a big typhoon. The variation is predicted by analysis and numerical calculation. Also the variation produced by pouring sea water in the partitioned ballast tanks is measured by flying YS11 on the actual GP course. A flight simulator is used to evaluate the effect of an elastic deformation.
AuthorsH Yokoyama
Date published2001
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The Hatchcoverless Containership Concept - Some Operational Experiences: IMarE Sydney/RINA Australian Division Joint Branch Meeting Paper Presented on 25-9-91
AuthorsD A Gillies
PublisherIMARE
AbstractThis paper reviews the operational performance of the hatchcoverless vessel `Bell Pioneer' since the original paper held on this subject in February 1989. The ship is discussed in detail with comments on operational difficulties found - mainly thawed sludge from container bottoms finding its way into the bilges.
AuthorsDate publishedD A Gillies
1991
PublisherIMARE
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Vertical ice loads on offshore structures due to changes in water levels
AuthorsS Kioka ; S Ito ; H Saeki et al.
PublisherComputational Mechanics Publications
AbstractVertical ice forces which act adversely on offshore structures are explained mathematically. Tables and figures are provided for the practical computation of the ice forces with attention given to destruction by adfreezing and bending. The procedure to calculate vertical ice forces is considered. There is a brief discussion on adfreeze bond strength and flexural strength. The effect of interaction between the ice and structures made of multiple piles is considered theoretically.
AuthorsDate publishedS Kioka ; S Ito ; H Saeki et al.
1995
PublisherComputational Mechanics Publications
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Wave-induced behaviour of a submarine pipeline laid on an erodable bottom - full-scale experiments
AuthorsW Dursthoff ; W Magda ; T Marcinkowski et al.
Date published1997
AbstractTests were carried out in the Grosser Wellenkanal (GWK) which is the large wave flume in Hannover in order to investigate the degree of wave-induced lowering of a cylinder laid on a sandy seabed. Results obtained focus on the development of erosion (scour) in the sandy bottom around the pipeline under the influence of waves self-lowering of the pipeline and its movement relative to the initial position.
AuthorsW Dursthoff ; W Magda ; T Marcinkowski et al.
Date published1997
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A Guide to the Offshore Installations and Pipeline Works (Management and Administration) Regulations 1995 Guidance on Regulations
AuthorsHealth and Safety Executive
Shelf Location226c
AbstractThis booklet gives guidance on the Offshore Installations and Pipeline Works (Management and Administration) Regulations (MAR) which came into force on 20 June 1995. It is intended to help people understand what the Regulations require.
AuthorsPublisherHealth and Safety Executive
Health and Safety Executive
ISBN number717625729
Shelf LocationDate published226c
2002
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A new approach to on-line oily water measurement - field experience in BP installations
AuthorsE Butler ; N Roth ; R Gaskin
PublisherNational Engineering Laboratory
AbstractThe ViPA (visual process analyser) is a new approach to oily water measurement using on-line image analysis techniques to provide information on the particle size distributions and relative concentrations of both dispersed oil and solids in produced water. The technology could be installed at a number of points within the oily water separation process to provide enhanced process control and to provide compliance monitoring information. Benefits of possible installation points and experience with them are discussed.
AuthorsDate publishedE Butler ; N Roth ; R Gaskin
2001
PublisherNational Engineering Laboratory
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A nonlinear numerical method for transient wave/hull problems on arbitrary vessels
AuthorsB Maskew
Date published1991
AbstractA non-linear numerical method is presented for treating rigid vessels moving in or below a free surface. The method is based on a boundary integral formulation in the time domain and treats the free surface deformation and general finite-amplitude motions of arbitrary lifting bodies using a mixed Eulerian/Lagrangian approach. Results are presented for a Series 60 CB = .6 hull starting from rest and exploratory calculations are examined on a generic SWATH ship. Finally preliminary results from a recently installed non-linear wave generator are discussed.
AuthorsB Maskew
Date published1991
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A rational risk acceptability criterion based on the life quality index
AuthorsRudiger Rackwitz
Date published2002
AbstractOptimization techniques are essential ingredients of reliability-oriented optimal designs of technical facilities. An example of suitable objective functions in terms of generalized cost is presented. Within FORM/SORM structural reliability analysis can be reduced to an optimization task and some simple algebra. However instead of an optimization of cost on top of an optimization for the reliability task a one-level optimization is proposed by adding the Kuhn-Tucker conditions of the reliability problem to general cost-benefit optimization. A rational basis to account for the cost of saving lives based on the recently proposed Life Quality Index is presented. An example illustrates the methodology.
AuthorsRudiger Rackwitz
Date published2002
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A rule-based Narai-design system on CIM for shipbuilding
AuthorsK Doi
Date published1994
AbstractJapan's Ship & Ocean Foundation has been conducting feasibility studies on establishing a conceptual framework on Computer Integrated Manufacturing for Shipbuilding. Using the committee's findings a pilot model consisting of core systems is proposed. The method called expert systems is then applied to the design of a transverse section of an oil tanker. The results indicate that this method can be used to generate design information early in the planning stage.
AuthorsK Doi
Date published1994
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Aeolian sand transport on a ridge and runnel beach: preliminary results from Leffrinckoucke Beach Northern France
AuthorsStephane Vanhee ; Edward J Anthony ; Marie-Helene Ruz
Date published2002
AbstractThe aeolian transport conditions on a macro-tidal ridge and runnel beach in northern France were monitored over two 30-minute experiments representing respectively conditions of onshore and offshore to shore-parallel wind flow. The preliminary results from these experiments on aeolian sand transport across a ridge and runnel beach dominated by shore-parallel to offshore winds are presented. After some introductory information a look is taken at the study area. Next the methods are considered and the results are discussed.
AuthorsStephane Vanhee ; Edward J Anthony ; Marie-Helene Ruz
Date published2002
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An update on the Oil Pollution Act of 1990
AuthorsBarbara L Lamb ; David M Bovet
Date published2006
AbstractOPA 90 (the Oil Pollution Act of 1990) is having a significant impact on the business of those US and international tanker owners engaged in US trades. Firstly the US oil trades and the international and domestic fleets serving those trades are reviewed. Secondly the challenge of OPA 90 is outlined from the shipowner's perspective focusing on several of the key areas of regulatory change. Thirdly the Act's impacts are discussed together with the financial and strategic implications for the shipowner. Regulatory areas addressed include liability and compensation financial responsibility new ships existing vessels and vessel response plans.
AuthorsBarbara L Lamb ; David M Bovet
Date published2006
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Behaviour of a Model Breakwater Element on a Sandy Seabed
AuthorsG Sills ; O Fergui ; G Svanoe et al.
Date published2001
AbstractBreakwater elements are subject to wave and current forces that influence their stability causing settlement and scour. An understanding of these processes is necessary for the optimum design of breakwaters. This paper reports the results of field measurements undertaken on a cylindrical model breakwater element placed on a sandy seabed along with numerical modelling that was used to analyse and interpret the data. Particular attention was paid to the possibility that the pore pressure response beneath the element was influenced by the presence of undissolved gas in the seabed.
AuthorsG Sills ; O Fergui ; G Svanoe et al.
Date published2001
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Civil marine radar. A personal record of the history and development over half a century with a focus on the detection of small targets
AuthorsP D L Williams
Shelf Location203c
AbstractThis book concentrates on the civil marine role of a radar at sea, which is defined in naval terms as Marine and Pilotage or M&P. This CD brings original material on CMR, containing 20 chapters, references and appendices.
AuthorsDate publishedP D L Williams
2002
Shelf Location203c