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Marine Accident Investigation Branch MAIB Report of the investigation into the power failure on Canberra off the Isle of Wight on 7 December 1994
AuthorsMAIB
PublisherDepartment of Transport (DOT)
AbstractOn 7 December 1994 the passenger vessel Canberra with 1495 passengers and 931 crew on board suffered a loss of propulsive and main electrical power seven miles south east of the Isle of Wight UK. The loss of steam pressure was due to a failure in the fuel oil supply which was due to inadequate procedures and supervision. The investigation found some weaknesses within the bridge watchkeeping team during the period prior to anchoring the vessel.
AuthorsDate publishedMAIB
1996
PublisherDepartment of Transport (DOT)
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On the critical significant wave height for capsizing of a damaged ro-ro passenger ship
AuthorsT Haraguchi ; S Ishida ; S Murashige
PublisherElsevier
AbstractSince the Estonia accident studies have been carried out on the stability of damaged ro-ro passenger ships in waves. Since the phenomena are complicated and affected by many factors studies need to be carried out in various conditions. Here experiments are carried out in beam waves and concentrate particularly on Japanese ships and Japanese waters. Discussions are mainly focused on the relation between the height of water on deck and the critical significant wave height for capsize and on the effect of the peak period of wave spectrum.
AuthorsDate publishedT Haraguchi ; S Ishida ; S Murashige
2000
PublisherElsevier
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Plankton community behaviour on ecological and evolutionary timescales: when models confront evidence
AuthorsHans R Thierstein ; Mara Y Cortes ; Ali T Haidar
Date published2004
AbstractThe subject of global change on long and short time-scales has enjoyed high priority in international research agendas since around 1986. Efforts were subsequently extended and politically enhanced at the Earth Summit in 1992 by the proposed UN conventions on climate change and biodiversity. Both of these issues are influenced by processes acting on very short and on very long time-scales. The marine plankton record is used as an example of the progress made and the problems encountered in trying to bridge this gap. Evidence mainly from coccolithophores is discussed but the other three of the four major skeletonised marine plankton groups is discussed. Because these plankton groups occur in all major ocean basins they are prime examples for the development and testing of models of the interactions between the biosphere (organismic world) and the geosphere (inanimate or abiotic world) on short to very long time-scales.
AuthorsHans R Thierstein ; Mara Y Cortes ; Ali T Haidar
Date published2004
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Second-order free surface effect on cavitating 3-D hydrofoils
AuthorsSakir Bal
Date published2001
AbstractThe iterative method which is originally developed for the three-dimensional cavitating hydrofoils moving with constant speed under a free surface is extended to include the second-order free surface effect into the calculations. The iterative nonlinear method is based on Green's theorem and allows separation of the cavitating hydrofoil problem and the free surface problem. These two problems are solved separately with the effects of one on the other being accounted for in an iterative manner. The cavitating hydrofoil surface and the free surface are modeled with constant strength dipole and constant strength source panels. The second-order free surface effect is included into the calculations by the technique of small perturbation expansion both for the potential and for the wave elevation on the free surface. The source strengths on the free surface are expressed in terms of perturbation potential by applying first order (linearized) and second-order free surface conditions. No radiation condition is enforced for downstream and transverse boundaries. Second-order free surface effect on cavitation characteristics and wave elevations is discussed.
AuthorsSakir Bal
Date published2001
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Determination of wave bending loads on a 40 knot long slender open topped containership through model tests and hydrodynamic calculations with particular reference to the effects of hull flexibility on fatigue life
AuthorsE Dudson ; H J Rambech ; M K Wu
PublisherRINA Conference Proceedings
AbstractA project to determine the design loads on a high speed transatlantic pentamaran are outlined with two classification societies performing the design load predictions each calculating different loads. A comprehensive series of model tests were performed to increase confidence in the reliability of calculated loads. The model tests are described together with a discussion on the verification of predicted loads. The effects of non-linear movement and flexibility on the vessels fatigue life are also discussed.
AuthorsDate publishedE Dudson ; H J Rambech ; M K Wu
2001
PublisherRINA Conference Proceedings
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On-line monitoring of continuous process plants
AuthorsD W Butcher (editor)
Shelf Location207b
AbstractIndividual chapters are based on papers presented at the International Conference on On-line Surveillance and Monitoring - organised by the Society of Chemical Industry in London during 1983. The subject matter has been systematically developed to include sections on physical and chemical condition monitoring, applications to components, processes, and complete systems. Topics that receive particular attention include: monitoring by acoustic emission and ultrasonics; on-line corrosion monitoring techniques; predictive monitoring of process equipment; plant monitoring by vibration and noise measurement; monitoring of conventional and gas turbine power plant.
AuthorsPublisherD W Butcher (editor)
Chichester ; Ellis Horwood Ltd, for the Society of Chemical Industry, London
Shelf LocationDate published207b
1983
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On liquefaction countermeasure in the soil around a caisson- type quay wall on pile foundation
AuthorsT Takatani ; Y-h Maeno
Date published2000
AbstractThe seismic behaviour of a caisson-type quay wall resting on pile foundations against the 1995 Hyogo-ken Nanbu Earthquake is numerically evaluated using a liquefaction analysis based on an effective stress model. The effectiveness of applying pile foundations to a caisson-type quay wall is investigated by considering two liquefaction countermeasures for five different situations taking into account the pile length as well as the differences in pile arrangement beneath the caisson structure. The effect of pile length under the caisson on the deformation of the caisson and the soil around the caisson is numerically evaluated using liquefaction analysis. The feasibility of using non-liquefied material in the reclaimed land behind the caisson structure is investigated from the view of a liquefaction countermeasure.
AuthorsT Takatani ; Y-h Maeno
Date published2000
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On the non-linear analysis of pipeline- soil interaction dynamics on the ocean bed
AuthorsVincent O S Olunloyo ; Charles A Osheku ; O Damisa
Date published2005
AbstractThe non-linear dynamic response interaction of a pipeline on a moving ocean-bed is investigated where the pipeline is idealised as a hollow beam vibrating on a non-linear elastic foundation with a fully developed fluid flowing inside and the assumptions made in respect of the material properties of the soil at the ocean bed are enumerated. Next the effect of the geology is examined by constructing a model for the geomechanical behaviour of the ocean bed. For this purpose the seabed is treated as a rigid porous body. After this the analysis of the results is considered using typical values for some of the soil and physical parameters experienced in practice. Finally results are discussed together with the implication for engineering works associated with the laying of the pipes on the ocean bed.
AuthorsVincent O S Olunloyo ; Charles A Osheku ; O Damisa
Date published2005
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The Impact of Coiled Tubing Fatigue on Pressure and Tension Limits
AuthorsY S Yang
Date published2000
AbstractCoiled Tubing (CT) is subjected to mechanical fatigue damage as it is cycled on and off the reel and over the gooseneck. The impact of fatigue on CT material yield strength and the effects of reduced yield strength on CT pressure and tension limits were evaluated. Experiments on CT fatigue cycling and mechanical tests on cycled CT samples were conducted using both a standard CT fatigue fixture and a tensile testing machine. Based on the test data an empirical relationship between number of fatigue cycles and yield strength reduction was developed. This relationship was incorporated into CT collapse/burst and tension predictive criteria where the reduction in yield strength was not considered previously.
AuthorsY S Yang
Date published2000
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What naval architects should be taught on marine engineering items and how - a view from Finland
AuthorsP Hakkinen
Date published2000
AbstractThe ship machinery topics that are lectured on to naval architecture students show an established content worldwide. There are some variations e.g. turbine propulsion plants receive more attention at US universities than in Europe. Respectively special courses on naval craft and fishing vessels are lectured on in some countries. The paper deals with the changing demands. The key question is ‘What should a naval architect know about ship machinery?’ The paper is based on 10-years of university teaching experience. The feedback of graduated naval architects and their employees is included. Also the students’ views on the courses various teaching methods and textbooks are looked at. Finally some remarks are made on the means of naval architects to maintain and upgrade their professional skills.
AuthorsP Hakkinen
Date published2000
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Chord Stress Effects on Ultimate Strength of DT Tubular Joints
AuthorsD A Pecknold ; C C Ha ; W C Mohr
Date published1998
AbstractA new parametric strength prediction equation for compression DT joints subjected to chord stress is developed based on existing screened test data and on a new FE database that covers a wide range of joint geometries and significantly extends the information available on the effect of chord stress on static strength of compression DTs. This new strength prediction equation appears to provide a better fit to the data than either the current API RP2A (20th Edition) or IS0 proposed draft design guidance.
AuthorsD A Pecknold ; C C Ha ; W C Mohr
Date published1998
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Effect of crystal orientation on behaviour of columnar grained sea ice
AuthorsC Zhan ; E Evgin ; N K Sinha
Date published1994
AbstractA constitutive model accounting for the effect of crystal orientation on the mechanical behaviour of columnar grained sea ice is used to predict the sea ice behaviour. The effect of crystal orientation on deformation and strength of columnar grained sea ice is looked into. Comparisons between model predictions and available test data are given for the dependence of the uniaxial strength on the loading direction. Firstly the sea ice model is looked at. Next dependence of sea ice behaviour on crystal orientation is discussed.
AuthorsC Zhan ; E Evgin ; N K Sinha
Date published1994
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Effect of silt concentration on the cavitation NPSH curve of a centrifugal pump
AuthorsA Ladouani ; A Khaldi ; B Bekhti
Date published1995
AbstractAn experimental test rig is used to generate information on the effect of silt concentration on N.P.S.H. curves. Silt characteristics are provided. The test rig and the N.P.S.H. measurement procedure are described. The N.P.S.H results are presented. The effects of silt concentration on the cavitation flow rate and on the pump characteristic are discussed. Cavitation in centrifugal pumps discharging silt is accelerated due to rising silt concentration and flow rate leading to lower cavitation flow rates.
AuthorsA Ladouani ; A Khaldi ; B Bekhti
Date published1995
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Influence of seismic shooting on the lesser sandeel (Ammodytes marinus)
AuthorsArne Hassel ; Tor Knutsen ; John Dalen et al.
Date published2004
AbstractA field experiment on the effect of seismic shooting on the lesser sandeel (Ammodytes marinus) was conducted on the fishing grounds in the southeastern part of the North Sea in May 2002. The distribution and occurrence of sandeel within the seismic shooting region were quantified by grab sampling at night and acoustic surveying during daytime. Based on fishery statistics from the commercial sandeel trawlers operating in the vicinity of the experimental area trends in catch landings of sandeel during the experimental period were also explored.
AuthorsArne Hassel ; Tor Knutsen ; John Dalen et al.
Date published2004
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On-board training today and tomorrow
AuthorsMER
Date published1982
AbstractThe findings of a recent Institute of Marine Engineers Conference on crew training especially by on-board techniques are reported with special mention of the Texaco TOPCAT system of computer asssited training developed by the company and running on Commodore 8032 micro computers with programmes written by UWIST Maritime Studies Department and to the Marine Societies more traditional approach using books and correspondence courses through the College of the Sea. The role played by increasing ship/shore communications is expected to influence both on-board training systems and management techniques.
AuthorsMER
Date published1982
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Potential long-term effects of limiting CO2 and air pollutant emissions on fuels and technologies on the US electricity sector
AuthorsM Miller ; G Hester
Date published2000
AbstractThis paper comprises some 20 overhead projection slides exploring the potential long-term effects of limiting CO2 and air pollutant emissions on fuels and technologies in the US electricity sector. It is concluded that emission reductions need to be co-ordinated with accelerated development of advanced low-emitting technologies and that an analytic process to evaluate the ability of alternative policies to achieve this be undertaken before policy decisions are finalised.
AuthorsM Miller ; G Hester
Date published2000
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Study on development trend of materials circulation and comprehensive mode of shipping on Dalian-Yantai line
AuthorsJin Yinyun
Date published2002
AbstractA study of the development trend of materials circulation and comprehensive mode of shipping on the Dalian-Yantai Line is presented. Materials circulating in this area are increasing. Making full use of Dalian-Yantai golden line is a necessary way to enhance the through capacity of materials circulation.
AuthorsJin Yinyun
Date published2002
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Study on the evaluation of photovoltaic generation system installed on LPG tanker
AuthorsKazuyoshi Sumi
Date published2005
AbstractAlthough small yachts currently used PV (photovoltaic) generation systems the system isn't yet used as a power source by ocean-going vessels. Here a PV generation system installed on a LPG tanker is evaluated. The data was collected and analysed. The data were the PV power the PV energy the electric power of main diesel generator and the position of the vessel from April-December2004
AuthorsKazuyoshi Sumi
Date published2005
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Wave induced forces on a submarine pipeline
AuthorsF Raichlen ; A Watanabe
Date published1997
AbstractThe wave-induced forces on an underwater sewage outfall were investigated using a laboratory model with the pipeline supported off the bottom on a pedestal faced with rock layers. Velocities were measured around the structure upstream and downstream. The virtual mass coefficient and lift coefficient were studied. The porosity of the rock support structure affected neither the virtual mass nor the lift significantly. The effect of the proximity of the structure to the free surface on the virtual mass coefficient was small but the effect on the lift coefficient was significant.
AuthorsF Raichlen ; A Watanabe
Date published1997
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The effects of marine fouling on the performance of a single- point acoustic doppler current sensor mounted on a TABS-II spar buoy
AuthorsJ N Walpert
Date published2001
AbstractTABS (the Texas Automated Buoy System) has a network of buoys in the Gulf of Mexico along the Texas coastline which serve as an important tool to oil spill response oil-spill trajectory modelling and scientific research. The data are used by the TGLO to direct response activities in the event of an oil spill in Texas coastal waters. Near-surface current data are collected and processed within the buoy and then telemetered to GERG's facility where the data are quality controlled archived and displayed on GERG's Web page. Biofouling has been one of the limiting factors in data quality and deployment length. The TABS-II spar buoy is one of two types of spar buoys used by GERG (the Geochemical and Environmental Research Group) to monitor and report near real- time surface currents in support of oil spill response and trajectory modelling. An experiment was carried out to determine the effects of marine fouling on a single-point acoustic Doppler current sensor on a TABS-II spar buoy. An Aanderaa DCS3500R Doppler current sensor was mounted on a TABS-II spar buoy. A comparison was made of fouled and non- fouled sensors and conclusions were drawn regarding the effects of fouling on the sensor.
AuthorsJ N Walpert
Date published2001