The Experts below are selected from a list of 252 Experts worldwide ranked by ideXlab platform
Naoya Umeda - One of the best experts on this subject based on the ideXlab platform.
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A new weather-routing system that accounts for Ship Stability based on a real-coded genetic algorithm
Journal of Marine Science and Technology, 2011Co-Authors: Atsuo Maki, Youhei Akimoto, Yuichi Nagata, Shigenobu Kobayashi, Eiichi Kobayashi, Shigeaki Shiotani, Teruo Ohsawa, Naoya UmedaAbstract:The operation schedule of an oceangoing vessel can be influenced by wave or wind disturbances, and is therefore weather routed. The weather-routing problem is considered to be a multimodal function problem. Therefore, in the present research, the real-coded genetic algorithm technique (an evolutionary calculation technique) is applied to globally search for the optimum route. Additionally, to avoid maritime accidents due to parametric rolling, this route optimization method takes into account the risk of parametric rolling as one of its objective functions. Numerical verification is carried out for three kinds of objective functions with different weight ratios between fuel efficiency and Ship safety in parametric rolling. As a result, it is numerically confirmed that the relation between economics and Ship safety is a trade-off, and the safer route is not necessarily the most economical. Considering its robustness, the proposed method appears to be a powerful practical tool by choosing the most appropriate weights for economics and Ship safety.
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contemporary ideas on Ship Stability and capsizing in waves
2011Co-Authors: Marcelo A S Neves, Kostas J. Spyrou, Vadim Belenky, Jean Otto De Kat, Naoya UmedaAbstract:Preface.- 1 Stability Criteria.- Review of Available Methods for Application to Second Level Vulnerability Criteria, by Christopher C. Bassler, Vadim Belenky, Gabriele Bulian, Alberto Francescutto, Kostas Spyrou and Naoya Umeda.- A Basis for Developing a Rational Alternative to the Weather Criterion: Problems and Capabilities , by K. J. Spyrou.- Conceptualising Risk, by Andrzej Jasionowski and Dracos Vassalos.- Evaluation of the Weather Criterion by Experiments and its Effect to the Design of a Ro-Pax Ferry, by Shigesuke Ishida, Harukuni Taguchi and Hiroshi Sawada.- Evolution of Analysis and Standardization of Ship Stability: Problems and Perspectives, by Yury Nechaev.- SOLAS 2009 - Raising the Alarm, by Dracos Vassalos and A. Jasionowski.- 2 Stability of the Intact Ship.- Effect of Initial Bias on the Roll Response and Stability of Ships in Beam Seas, by A. Y. Odabasi and E. Ucer.- Historical Roots of the Theory of Hydrostatic Stability of Ships, by Horst Nowacki and Larrie D. Ferreiro.- The Effect of Coupled Heave/Heave Velocity or Sway/Sway Velocity Initial Conditions on Capsizing Modelling, by Leigh S. McCue and Armin W. Troesch.- The Use of Energy Build Up to Identify the Most Critical Heeling Axis Direction for Stability Calculations for Floating Offshore Structures, by Joost van Santen.- Some Remarks on Theoretical Modelling of Intact Stability, by N. Umeda, Y. Ohkura, S. Urano, M. Hori and H. Hashimoto.- 3 Parametric Rolling.- An Investigation of Head-Sea Parametric Rolling for Two Fishing Vessels, by Marcelo A. S. Neves, Nelson A Perez, Osvaldo M Lorca and Claudio A Rodriguez.- Simple Analytical Criteria for Parametric Rolling, by K.J. Spyrou.- Experimental Study on Parametric Roll of a Post-Panamax ContainerShip in Short-Crested Irregular Waves, by Hirotada Hashimoto, Naoya Umeda and Akihiko Matsuda.- Model Experiment on Parametric Rolling of a Post-Panamax ContainerShip in Head Waves, by Harukuni Taguchi, Shigesuke Ishida, Hiroshi Sawada and Makiko Minami.- Numerical Procedures and Practical Experience of Assessment of Parametric Roll of Container Carriers, by Vadim Belenky, Han-Chang Yu and Kenneth Weems.- Parametric Roll and Ship Design, by Marc Levadou and Riaan van 't Veer.- Parametric Roll Resonance of a Large Passenger Ship in Dead Ship Condition in All Heading Angles, by Abdul Munif, Yoshiho Ikeda, Tomo Fujiwara and Toru Katayama.- Parametric Rolling of Ships - Then and Now, by J. Randolph Paulling.- 4 Broaching-to.- Parallels of Yaw and Roll Dynamics of Ships in Astern Seas and the Effect of Nonlinear Surging, by K.J. Spyrou.- Model Experiment on Heel-Induced Hydrodynamic Forces in Waves for Realising Quantitative Prediction of Broaching, by H. Hashimoto, N. Umeda and A. Matsuda.- Perceptions of Broaching-to: Discovering the Past, by K.J. Spyrou.- 5 Nonlinear Dynamics and Ship Capsizing.- Use of Lyapunov Exponents to Predict Chaotic Vessel Motions, by Leigh S. McCue and Armin W. Troesch.- Applications of Finite-Time Lyapunov Exponents to the Study of Capsize in Beam Seas, by Leigh S. McCue.- Nonlinear Dynamics on Parametric Rolling of Ships in Head Seas, by Marcelo A. S. Neves, Jerver E. M. Vivanco and Claudio A. Rodriguez.- 6 Roll Damping.- A Simple Prediction Formula of Roll Damping of Conventional Cargo Ships on the Basis of Ikeda's Method and Its Limitation, by Yuki Kawahara, Kazuya Maekawa and Yoshiho Ikeda.- A Study on the Characteristics of Roll Damping of Multi-hull Vessels, by Toru Katayama, Masanori Kotaki and Yoshiho Ikeda.- 7 Probabilistic Assessment of Ship Capsize.- Capsize Probability Analysis for a Small Container Vessel, by E.F.G. van Daalen, H. Boonstra and J.J. Blok.- Efficient Probabilistic Assessment of Intact Stability, by N. Themelis and K.J. Spyrou.- Probability of Capsizing in Beam Seas with Piecewise Linear Stochastic GZ Curve, by Vadim Belenky, Arthur M. Reed and Kenneth M. Weems.- Probabilistic Analysis of Roll Parametric Resonance in Head Seas, by Vadim L. Belenky, Kenneth M. Weems, Woei-Min Lin and J.Randolf Paulling.- 8 Environmental Modeling.- Sea Spectra Revisited, by Maciej Pawlowski.- On Self-Repeating Effect in Reconstruction of Irregular Waves, by Vadim Belenky.- New Approach To Wave Weather Scenarios Modeling, by Alexander B.Degtyarev.- 9 Damaged Ship Stability.- Effect of Decks on Survivability of Ro-Ro Vessels, by Maciej Pawlowski.- Experimental and Numerical Studies on Roll Motion of a Damaged Large Passenger Ship in Intermediate Stages of Flooding, by Yoshiho Ikeda, Shigesuke Ishida, Toru Katayama and Yuji Takeuchi.- Exploring the Influence of Different Arrangements of Semi-Watertight Spaces on Survivability of a Damaged Large Passenger Ship, by Riaan van 't Veer, William Peters, Anna-Lea Rimpela and Jan Otto de Kat.- Time-Based Survival Criteria for Passenger Ro-Ro Vessels, by Andrzej Jasionowski, Dracos Vassalos and L. Guarin.- Pressure-Correction Method and Its Applications for Time-Domain Flooding Simulation, by Pekka Ruponen.- 10 CFD Applications to Ship Stability.- Applications of 3D Parallel SPH for Sloshing and Flooding, by Liang Shen and Dracos Vassalos.- Simulation of Wave Effect on Ship Hydrodynamics by RANSE, by Qiuxin Gao and Dracos Vassalos.- A Combined Experimental and SPH Approach to Sloshing and Ship Roll Motions, by Luis Perez-Rojas, Gabriele Bulian, Elkin Botia-Vera, Jose Luis Cercos-Pita, Antonio Souto-Iglesias and Louis Delorme.- 11 Design for Safety.- Design for Safety with Minimum Life-Cycle Cost, by Romanas Puisa, Dracos Vassalos, Luis Guarin and G. Mermiris .- 12 Stability of Naval Vessels.- Stability Criteria Evaluation and Performance Based Criteria Development for Damaged Naval Vessels, by Andrew J. Peters and David Wing.- A Naval Perspective on Ship Stability, by Arthur M. Reed.- Accident Investigations.- New Insights on the Sinking of MV Estonia, by Andrzej Jasionowski and Dracos Vassalos.- Experimental Investigation on Capsizing and Sinking of a Cruising Yacht in Wind, by Naoya Umeda, Masatoshi Hori, Kazunori Aoki, Toru Katayama and Yoshiho Ikeda.- Author Index.
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probabilistic assessment of Ship Stability discussion
Transactions of the Society of Naval Architects and Marine Engineers, 2007Co-Authors: Nikolaos Themelis, Gabriele Bulian, Naoya Umeda, Alberto Francescutto, Kostas J. Spyrou, Bilal M Ayyub, Dag Myrhaug, Emil Aall Dahle, Vadim BelenkyAbstract:Whilst the task of developing a sound probabilistic Stability assessment method is a formidable one given the current depth of knowledge in stochastic dynamical systems, a practical solution is proposed here exploiting the groupiness characteristic of high waves. Rather than attacking directly the complete problem, an effort is made to define a path where, the rigour of the deterministic approach in eliciting the nature of inStability is combined with suitable analysis of the probabilistic seaway. Critical wave encounters that could generate inStability are identified on the basis of deterministic analysis of Ship dynamics. A rational procedure is put forward for calculating the probability of such wave encounters. The probabilities of different capsize modes are distinguished. The method is not biased towards any specific type of mathematical model of Ship motions and is easily integrated within a risk assessment framework.
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Stability assessment for intact Ships in the light of model experiments
Journal of Marine Science and Technology, 1999Co-Authors: Naoya Umeda, Akihiko Matsuda, Masami Hamamoto, Shiro SuzukiAbstract:A systematic method for assessing intact Ship Stability with a free-running model in a seakeeping and maneuvering basin is proposed in this paper. Model experiments were carried out in extremely steep regular waves for a model drifting, running in head seas, and quartering seas. This method was applied to two purse seiners, and efficiently identified thresholds in metacentric heights for capsizing of these Ships. These capsizing thresholds are compared with requirements of the IMO Code on Intact Stability. This series of model experiments also confirms that capsizing at the threshold occurs only in quartering seas, and shows that capsizing is caused by broaching, loss of Stability on a wave crest, or bow diving.
George Zaraphonitis - One of the best experts on this subject based on the ideXlab platform.
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GOALDS--goal based damage Ship Stability and safety standards.
Accident; analysis and prevention, 2013Co-Authors: Apostolos Papanikolaou, Dracos Vassalos, Byung Suk Lee, Christian Mains, Odd Olufsen, Rainer Hamann, George ZaraphonitisAbstract:The new probabilistic damaged Stability regulations for dry cargo and passenger Ships (SOLAS 2009), which entered into force on January 1, 2009, represent a major step forward in achieving an improved safety standard through the rationalisation and harmonization of damaged Stability requirements. There are, however, serious concerns regarding the adopted formulation for the calculation of the survival probability of passenger Ships, particularly for ROPAX and large cruise vessels. The present paper outlines the objectives, the methodology of work and main results of the EU-funded FP7 project GOALDS (Goal Based Damaged Stability, 2009–2012), which aims to address the above shortcomings by state-of-the-art scientific methods and by formulating a rational, goal-based regulatory framework, properly accounting for the damage Stability properties of passenger Ships and the risk of people onboard.
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goalds goal based Ship Stability safety standards
Procedia - Social and Behavioral Sciences, 2012Co-Authors: Apostolos Papanikolaou, Dracos Vassalos, Byung Suk Lee, Christian Mains, Odd Olufsen, George ZaraphonitisAbstract:The new probabilistic damaged Stability regulations for dry cargo and passenger Ships (SOLAS 2009), which entered into force on January 1, 2009, represent a major step forward in achieving an improved safety standard through the rationalization and harmonization of damaged Stability requirements. There are, however, serious concerns regarding the adopted formulation for the calculation of the survival probability of passenger Ships, particularly for ROPAX and large cruise vessels. The present paper outlines the objectives, the methodology of work and intermediate results of the EU–funded FP7 project GOALDS (Goal Based Damaged Stability, 2009–2012), which aims to address the above shortcomings by state–of–the–art scientific methods and by formulating a rational, goal–based regulatory framework, properly accounting for the damage Stability properties of passenger Ships.
Akio Imai - One of the best experts on this subject based on the ideXlab platform.
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multi objective simultaneous stowage and load planning for a container Ship with container rehandle in yard stacks
European Journal of Operational Research, 2006Co-Authors: Akio Imai, Kazuya Sasaki, Etsuko Nishimura, Stratos PapadimitriouAbstract:Abstract The efficiency of a maritime container terminal primarily depends on the smooth and orderly process of handling containers, especially during the Ship’s loading process. The stowage and associated loading plans are mainly determined by two criteria: Ship Stability and the minimum number of container rehandles required. The latter is based on the fact that most container Ships have a cellular structure and that export containers are piled up in a yard. These two basic criteria are often in conflict. This paper is concerned with the Ship’s container stowage and loading plans that satisfy these two criteria. The GM , list and trim are taken into account for the Stability measurements. The problem is formulated as a multi-objective integer programming. In order to obtain a set of noninferior solutions of the problem, the weighting method is employed. A wide variety of numerical experiments demonstrated that solutions by this formulation are useful and applicable in practice.
Chung Yee Lee - One of the best experts on this subject based on the ideXlab platform.
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multiobjective approaches for the Ship stowage planning problem considering Ship Stability and container rehandles
Systems Man and Cybernetics, 2016Co-Authors: Zizhen Zhang, Chung Yee LeeAbstract:The Ship stowage planning problem (SSPP) is a very complex and challenging problem in the logistics industries because it affects the benefits of both Shipping lines and port terminals. In this paper, we investigate a multiobjective SSPP, which aims to optimize the Ship Stability and the number of rehandles simultaneously. We use metacentric height, list value, and trim value to measure the Ship Stability. Meanwhile, the number of rehandles is the sum of rehandles by yard cranes and quay cranes and all necessary rehandles at future ports. To solve this problem, a variant of the nondominated sorting genetic algorithm III (NSGA-III) combined with a local search component is proposed. The algorithm can produce a set of nondominated solutions. Decision makers can then choose the most promising solution for practical implementation based on their experience and preferences. Extensive experiments are carried out on two groups of instances. The computational results demonstrate the effectiveness of the proposed algorithm compared to the NSGA-II and random weighted genetic algorithms, especially when it is applied in solving the six-objective SSPP.
Stratos Papadimitriou - One of the best experts on this subject based on the ideXlab platform.
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multi objective simultaneous stowage and load planning for a container Ship with container rehandle in yard stacks
European Journal of Operational Research, 2006Co-Authors: Akio Imai, Kazuya Sasaki, Etsuko Nishimura, Stratos PapadimitriouAbstract:Abstract The efficiency of a maritime container terminal primarily depends on the smooth and orderly process of handling containers, especially during the Ship’s loading process. The stowage and associated loading plans are mainly determined by two criteria: Ship Stability and the minimum number of container rehandles required. The latter is based on the fact that most container Ships have a cellular structure and that export containers are piled up in a yard. These two basic criteria are often in conflict. This paper is concerned with the Ship’s container stowage and loading plans that satisfy these two criteria. The GM , list and trim are taken into account for the Stability measurements. The problem is formulated as a multi-objective integer programming. In order to obtain a set of noninferior solutions of the problem, the weighting method is employed. A wide variety of numerical experiments demonstrated that solutions by this formulation are useful and applicable in practice.
