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Journal articles on the topic 'Stability of ships. Ships Ship handling'

Author: Grafiati

Published: 4 June 2021

Last updated: 11 February 2022

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1

Kuznetsov, Alexander, Alexander Kirichenko, and Alexey Zboinov. "Influence of a cargo plan on the container ship port turnaround time." E3S Web of Conferences 244 (2021): 08011. http://dx.doi.org/10.1051/e3sconf/202124408011.

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Nowadays, with patented technologies for the production of goods, the possibility of reducing their cost in order to maintain a competitive position in the commodity markets is supported by the rational organization of transportation. Thus, the transport component in the final cost of transported goods is reduced. At the same time, when using the same handling, lifting and transporting equipment from a limited number of global manufacturers, the possibility of reducing the cost of transport operations (both shipping and handling, including loading/unloading) depends only on their rational use.

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Bradley, R., C. A. Macdonald, and T. W. Buggy. "Quantification and Prediction of Pilot Workload in the Helicopter/Ship Dynamic Interface." Proceedings of the Institution of Mechanical Engineers, Part G: Journal of Aerospace Engineering 219, no. 5 (2005): 429–43. http://dx.doi.org/10.1243/095441005x33376.

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The evaluation, early in the design cycle, of the limits for operating aircraft from ships in a wide range of sea states and atmospheric conditions has become an important issue for two main reasons. First, the simultaneous entry into service of new helicopter types and new naval platforms has generated an enormous task in the development of appropriate Ship Helicopter Operating Limits for in-service operations. Second, it has become clear that such operational factors need to be addressed at the design stage - which of necessity involves developing a predictive capacity in all of the areas wh

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Aggarwal, Ankit, Vivek Kumar Gope, Shivaraj Saybanna Managiri, and Arkal Vittal Hegde. "Development of Prediction Models for Hydrodynamic Performance of Semicircular Breakwater." Marine Technology Society Journal 46, no. 5 (2012): 48–54. http://dx.doi.org/10.4031/mtsj.46.5.5.

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AbstractBreakwaters are structures built to protect harbors, shore areas, basins, and other areas from the fury of sea waves. They create calm waters and provide for the safe mooring and handling of ships, as well as protection to harbor facilities. The main function of a breakwater is the formation of an artificial harbor. Of late, certain new types of breakwaters have been constructed to cater to the tranquility requirements of managing marine traffic in ports. The semicircular breakwater (SBW) is one such new type of breakwater. The semicircular breakwater possesses a round top and, thus, o

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Wang, Xing Hua, Shen Hua Yang, and Guo Quan Chen. "Design and Implement on Intelligent Target Ship for Ship Handling Simulator." Applied Mechanics and Materials 97-98 (September 2011): 854–58. http://dx.doi.org/10.4028/www.scientific.net/amm.97-98.854.

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Aiming at the fact that target ships of ship handling simulator have not the ability of avoiding other ships according to the COLREG 1972, the paper puts forward to add Personifying Intelligent Decision-making for Vessel Collision Avoidance, for short PIDVCA, and vessel automatic control algorithm into solver procedure of target ship, designed and realized target ships to sail according to the COLREG 1972, which make ship handling simulator more realistic simulate the actual navigation environment at sea. Finally, the paper gives the simulation pictures of 2 and 4 target ships intelligent coll

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Benedict, Knud, Michèle Schaub, Michael Baldauf, Michael Gluch, Matthias Kirchhoff, and Caspar Krüger. "New Results For Teaching Ship Handling Using Fast Time Simulation." Pedagogika-Pedagogy 93, no. 7s (2021): 167–84. http://dx.doi.org/10.53656/ped21-7s.15new.

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Some years ago, the SAMMON software tool box was introduced for “simulation augmented manoeuvring design, monitoring & conning”. It is based on the innovative “rapid advanced prediction & interface technology” (RAPIT) to simulate the ships motion by fast time simulation FTS with complex dynamic math models and to display the ships track immediately in an electronic sea chart for any rudder, thruster or engine manoeuvre planned by the navigator.specifically, the SAMMON planning tool will be shown in its opportunities for achieving new knowledge for teaching of ships dynamic and training

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Kunieda, Yoshiaki, Kei Kumagai, Hideyuki Kashima, and Koji Murai. "An Effective Training and Evaluation Method for Anchoring Training in Maritime Education." World Journal of Social Science Research 7, no. 2 (2020): p12. http://dx.doi.org/10.22158/wjssr.v7n2p12.

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Captain Kashima et al. showed that ship handling skills significantly improve when anchoring exercises are practiced on training ships. And Kunieda et al. showed that the practicing on training ships also develops critical thinking and problem-solving skills. We created an evaluation scale for elementary ship handling skills to measure the effects of different anchoring training methods. We assessed the training methods using a rubric evaluation list containing nine evaluation items. Group work was arranged before and after the anchoring training sessions based on the results from student ques

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Woo, Donghan, Hun Choe, and Nam-Kyun Im. "Analysis of the Relationship between GM and IMO Intact Stability Parameters to Propose Simple Evaluation Methodology." Journal of Marine Science and Engineering 9, no. 7 (2021): 735. http://dx.doi.org/10.3390/jmse9070735.

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Securing a ship’s safe stability is essential. Thus, monitoring the stability parameters of the IMO requirements is required to provide an alert about the risk of the safety of ships’ stability to the captain, officers, and the crew of a ship. However, calculating all ships’ intact stability parameters is complex without ship loading software or equipment. To evaluate ships’ intact stability parameters, a convenient methodology to simply calculate them is necessary as a supplementary method for ships in the absence of loading software or equipment. In the present study, the Simple Evaluation M

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Bačkalov, I., S. Rudaković, and M. Cvijović. "Intact Stability of Historic Passenger Ships in Light of the Second Generation Intact Stability Criteria." International Journal of Maritime Engineering 163, A1 (2021): 119–30. http://dx.doi.org/10.5750/ijme.v163ia1.10.

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The paper examines the intact stability of historic passenger ships from the point of view of the contemporary notion of the intact stability, i.e. the Second Generation Intact Stability Criteria (SGISC) framework. An intact stability assessment using the Vulnerability Level 2 calculation procedures of SGISC for the dead ship condition was performed on four ocean liners: RMS Titanic, RMS Queen Mary, SS United States and SS Michelangelo, and two cruise ships: MS Song of America and MS Costa Concordia. In addition, the intact stability of the selected ships was appraised using the present-day ma

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Zhang, Yan Qiong, Kai Huang, and Wei Feng Zhu. "Model of the Equipment Selection of Material Handling System for Large Ship." Applied Mechanics and Materials 347-350 (August 2013): 2865–68. http://dx.doi.org/10.4028/www.scientific.net/amm.347-350.2865.

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The handling equipment optimization problem of material handling system for large ships is discussed in this paper. The optimization models for two supply ways which includesshore-to-ship and vessel-to-vesselare proposed respectively, which are converted to linear programming problems in order to analyze large ship material supply handling system of equipment optimization.

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10

Malisan, Johny. "Tinjauan Kelaiklautan Kapal Tradisional Yang Beroperasi Di Wilayah Jakarta • Kepulauan Seribu." Warta Penelitian Perhubungan 24, no. 1 (2019): 100. http://dx.doi.org/10.25104/warlit.v24i1.987.

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ABSmACTNumber of wooden-ships (people called them as kapal ojek) operated in 2011 are 34 vessels or equal to 1,199 gross tonnage and total capacity of 1,833 passengers. Since many accidents of ships occurs and to be public concern, the author is interested to make research in order to evaluate sea worthiness of their stability and users' opinion. 17tere are 5 aspect of opinions to be collected among others safety equipments, timeliness and ships availability, security and comfort, crews competencies, and tariff. Users' opinion is analyzed by using the Importance performance Index and Customer

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11

Kim, Dong-Gyun, Katsutoshi Hirayama, and Gyei-Kark Park. "Collision Avoidance in Multiple-Ship Situations by Distributed Local Search." Journal of Advanced Computational Intelligence and Intelligent Informatics 18, no. 5 (2014): 839–48. http://dx.doi.org/10.20965/jaciii.2014.p0839.

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As vital transportation carriers in trade, ships have the advantage of stability, economy, and bulk capacity over airplanes, trucks, and trains. Even so, their loss and cost due to collisions and other accidents exceed those of any other mode of transportation. To prevent ship collisions many ways have been suggested, e.g., the 1972 COLREGs which is the regulation for preventing collision between ships. Technologically speaking, many related studies have been conducted. The term “Ship domain” involves that area surrounding a ship that the navigator wants to keep other ships clear of. Ship doma

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Zou, Yin Cai, and Wei Gang Zheng. "The Structure Design of Parent-Subsidiary Wind Sailing Boat and the Matching Research of Power Plant." Advanced Materials Research 912-914 (April 2014): 1032–36. http://dx.doi.org/10.4028/www.scientific.net/amr.912-914.1032.

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Wind sailing boat fades out maritime transport industry gradually, because of its existence decreases the ship stability, and threatens mariners and ships security vastly. Project group has worked out high stability and security ship through researching literature and emulation-technique. Through the design of a parent ship and a sub-shipa set of wind sailing system and a water supply and drainage system, and the modeling calculation and analysis about the thrust of the fixed pitch propeller matching with the sailing, we can conclude that the added sub-ships can enhance ships stability in cons

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Hetharia, Wolter R. "Preliminary Study on Stability Parameters of Semi-Displacement Ships." Applied Mechanics and Materials 874 (January 2018): 105–13. http://dx.doi.org/10.4028/www.scientific.net/amm.874.105.

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Semi-displacement passenger ships operate at the speed range of 19 to 23 knots or Froude number Fn of 0.50 to 0.75. Those ships need higher engine power to maintain their speeds. The efforts should be made to minimize their higher engine powers. Most experts worked to minimize the engine power for most merchant ships. In their works, the initial metacentric (GMO) at departure condition was taken as constraint to represent stability parameters. However, this is not a general case for semi-displacement passenger ships. In this study, a parent semi-displacement passenger was designed and modified

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14

Michalski, Jan P. "Parametrical Method for Determining Optimal Ship Carrying Capacity and Performance of Handling Equipment." Polish Maritime Research 23, no. 2 (2016): 19–24. http://dx.doi.org/10.1515/pomr-2016-0016.

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Abstract The paper presents a method of evaluating the optimal value of the cargo ships deadweight and the coupled optimal value of cargo handling capacity. The method may be useful at the stage of establishing the main owners requirements concerning the ship design parameters as well as for choosing a proper second hand ship for a given transportation task. The deadweight and the capacity are determined on the basis of a selected economic measure of the transport effectiveness of ship – the Required Freight Rate. The mathematical model of the problem is of a deterministic character and the si

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Yilmaz, Hüseyin, and Abdi Kükner. "An Approximate Method for Intact Stability of Fishing Vessels." Marine Technology and SNAME News 36, no. 03 (1999): 171–74. http://dx.doi.org/10.5957/mt1.1999.36.3.171.

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It is well known that stability is the most important safety requirement for ships. One should have some information on ship stability at the preliminary design stage in order to reduce risk. Initial stability of ships is an important criterion and can be closely evaluated in terms of form parameters and vertical center of gravity. In this study, using some sample ship data, approximate formulations are derived by means of regression analysis for the calculations expressed in terms of ship preliminary design parameters that can easily provide approximate GM calculations. Thus designers can be

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Hu, Lifen, Chen Yao, Wubin Li, Xiangyang Wang, and Zhongyu Sun. "Capsizing Performance of Dead Ship Stability for Damaged Ships." Marine Technology Society Journal 55, no. 1 (2021): 115–26. http://dx.doi.org/10.4031/mtsj.55.1.10.

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AbstractThis study proposes a method for combining capsizing probability and flooding process to investigate the time-domain dead ship stability of a damaged ship. It focuses on a nonlinear righting lever GZ curve solution in the following aspects: one aspect subjects the influence of damaged tanks on a hull shape to the wind and wave, and the other aspect is based on a real-time calculation of the GZ curve. According to 1‐degree-of-freedom rolling equation, the damaged capsizing probability model is established through fourth-order Runge-Kutta algorithm and Monte Carlo simulation. Also, the m

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Yanchin, Ivan A., and Oleg N. Petrov. "ON AUTONOMOUS AND SMART SHIPS: CHALLENGES AND BENEFITS FOR COMPUTE SCIENCES AND TELECOMMUNICATIONS." T-Comm 14, no. 11 (2020): 46–56. http://dx.doi.org/10.36724/2072-8735-2020-14-11-46-56.

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The paper is dedicated to the overview of the autonomous ship onboard control system functionality. The paper is dedicated to autonomous maritime navigation, i.e. to planning a safe and optimal route for an autonomous ship amid the absence of crew on board and to handling an autonomous ship when underway, ensuring seaworthiness and route correctness. Moreover, the paper describes communications of several autonomous ships and autonomous and ordinary ships to infer a collective decision on how to pass safely through a particular area. Since it is expected that autonomous ships are going to be e

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Dachev, Yuriy, Miroslav Tsvetkov, and Valentin Zlatev. "Ship Ballast Water Treatment." WSEAS TRANSACTIONS ON ENVIRONMENT AND DEVELOPMENT 17 (February 2, 2021): 110–17. http://dx.doi.org/10.37394/232015.2021.17.11.

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Ships use ballast water to ensure their buoyancy and stability. A significant amount of them is transported in various water basins of the World Ocean. Thus, together with ballast water, many microorganisms, phytoplankton and zooplankton are transported. The constant increase in the number of ships in the World Merchant Navy increases the risk of the spread of these invasive species in the local aquatic environment. This led to the decision of the International Maritime Organization (IMO) to legalize the control and treatment of ships' ballast water in order to minimize the risks of the spread

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Leendertse, J. J. "USE OF MODEL EXPERIMENTS IN SOLVING QUESTIONS OF NAVIGATION WITH SPECIAL REFERENCE TO THE ENTRANCE OF ST. ANNA BAY, CURACAO, NETHERLANDS ANTILLES." Coastal Engineering Proceedings 1, no. 6 (2011): 39. http://dx.doi.org/10.9753/icce.v6.39.

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For a great many years model experiments with ships have been carried out in towing tanks in order to ascertain the reactive movements of ships under different wave and current conditions. Such experiments do not only pertain to the stability of the ships but also to forces brought to bear on the hulls of the ships. A recent development in the coastal engineering field includes the use of ship models in questions of navigation.

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Toan, Ninh Cong, and Ngo Van He. "EFFECT OF HULL AND ACCOMMODATION SHAPE ON AERODYNAMIC PERFORMANCES OF A SMALL SHIP." Tạp chí Khoa học và Công nghệ biển 18, no. 4 (2019): 413–21. http://dx.doi.org/10.15625/1859-3097/18/4/13292.

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In marine transportation, aerodynamic performance is important for the ships, especially for the small passenger fast ships. It has affected the service speed, air resistance acting on hull, power energy as well as roll, pitch, yaw and stability of the ships. Moreover, the aerodynamic performance also directly affects the passengers, captains or employments who work on the ships. For a bad aerodynamic performance hull shape, it may make an accident in marine transportation. In this paper, the authors present a study on effect of hull shape on aerodynamic performance of a small passenger fast s

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Panasiuk, Irina, Sergejus Lebedevas, and Jonas Čerka. "The assessment algorithm of technological feasibility of SOx scrubber installation." Transport 33, no. 1 (2016): 197–207. http://dx.doi.org/10.3846/16484142.2016.1152298.

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The problematics of installation of sulphur oxides (SOx) scrubber becomes much relevant for today due to the new Annex VI of MARPOL 73/78 requirements, which sets 0.1% SOx limits by 2015 in Emission Control Area (ECA) and globally to 0.5% in 2020. The research in this field becomes more significant for ship-owners. SOx scrubber is most promising alternative because of lower operating costs and suitability to existing ships. Despite the fact that exhausts gas scrubbing is a common and proven technology on land, the conditions on ships differ significantly and still there are not enough practica

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Gulyaev, Ilya A. Gulyaev, та Evgeniy P. Ronnov. "Сombined ships stability analysis at the stage of design study". Russian Journal of Water Transport, № 66 (23 березня 2021): 29–35. http://dx.doi.org/10.37890/jwt.vi66.158.

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. A method of stability analysis for combined ship (oil carrier/platform ship type) at the stage of design study is presented. It should be noted that not all of ship’s main seaworthiness and operational characteristics are the result of a simple addition of the characteristics of an oil carrier and a platform ship. Their mutual influence takes place, which should be taken into account when analysing the stability in the multivariant optimization problems of internal and external design of such ships. This leads to the requirement to adjust the known methods of stability analysis at the initia

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Boccadamo, Guido, and Gennaro Rosano. "Excessive Acceleration Criterion: Application to Naval Ships." Journal of Marine Science and Engineering 7, no. 12 (2019): 431. http://dx.doi.org/10.3390/jmse7120431.

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In this paper, the application of the excessive acceleration (EA) criterion, one of five intact stability failure modes, within the second generation intact stability criteria (SGISC) framework, is shown for a set of naval vessels. First and second level vulnerability assessment of the criterion is applied to parent hulls D1 and D5 of D-Systematic Series, the US Office of Naval Research (ONR) Topside Series model, and the European multi-purpose frigate FREMM. All of which are semi-displacement, transom stern, and round bilge hull forms. Relatively low ship roll periods and great variations of

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YANG, XIUFENG, SHILIU PENG, MOUBIN LIU, and JIARU SHAO. "NUMERICAL SIMULATION OF BALLAST WATER BY SPH METHOD." International Journal of Computational Methods 09, no. 01 (2012): 1240002. http://dx.doi.org/10.1142/s0219876212400026.

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Ballast water has frequently been used in ships to provide stability and adjust trim, stress, and torsion for optimal steering and propulsion. Numerical simulation of the movement of ballast water and its interaction with the solid walls of operating ships are very difficult for traditional grid-based numerical models. In this paper, the smoothed particle hydrodynamics (SPH) method is applied to simulate water tank sloshing and the movement of ships carrying ballast water in three cases. Numerical results of water tank sloshing are compared with experimental ones. Numerical results of ships in

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Nabawi, Rahmat Azis, Syahril Syahril, and Salmat Salmat. "Stability Study of Flat Hull Ship for Fishing Tourism." Teknomekanik 3, no. 2 (2020): 80–85. http://dx.doi.org/10.24036/teknomekanik.v3i2.9272.

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The availability of boats is needed to develop fishing tourism. Most of the boats used so far generally use fishing boats made of woodcut in the forest, so this can damage the environment and cause natural disasters. Ships using a flat plate hull made of steel can be a substitute for wooden ships. This study aims to test the stability of a flat plate vessel designed for fishing boats. The ship stability test was carried out using a computer simulation method using Maxsurf Stability software. The ship stability criteria refer to the International Maritime Organization code A.749 (18), Ch 3-desi

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NISHIMURA, Tomohisa, Atsushi ISHIBASHI, and Hiroaki KOBAYASHI. "A Study on Ship Handling Characteristics toward Position Control of Unstable Ships." Journal of Japan Institute of Navigation 111 (2004): 55–62. http://dx.doi.org/10.9749/jin.111.55.

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Wen, Cui Ping, Kai Huang, and Wei Feng Zhu. "Research on Operation Optimization Problem of Material Handling System for Large Ship." Applied Mechanics and Materials 347-350 (August 2013): 3740–44. http://dx.doi.org/10.4028/www.scientific.net/amm.347-350.3740.

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Material supply isthe basic guarantee for the large ship sailing to ocean. In order to improve the efficiency of the supply of the large ship, the support of materials handling system is needed. According to the typical material handling system of the large ship, with the material handlings time shortest as the decision goal and the handling sequence as the decision variable, the analysis and construction of the model for optimizing the systems operation is given in this paper. The improved genetic algorithm is put forward. The specific model is also given and its proved that the analysis and

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Ayaz, Z., O. Turan, and D. Vassalos. "Manoeuvring and Seakeeping Aspects of Pod-Driven Ships." Proceedings of the Institution of Mechanical Engineers, Part M: Journal of Engineering for the Maritime Environment 219, no. 2 (2005): 77–91. http://dx.doi.org/10.1243/147509005x10495.

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An existing coupled non-linear six-degree-of-freedom model, which combines manoeuvring and seakeeping, is being enhanced for the simulation of motions of azimuthing pod-driven vessels. The equations of motions and modified numerical model for calculation of pod-induced propulsive and hull forces are presented. The modified numerical code has been verified using an extensive amount of experimental data for both conventional and pod-driven roll-on roll-off passenger ship/ferry (ROPAX) hull forms. Comparisons have been made between conventional and podded control using zigzag and pull-out manoeuv

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Landsburg, Alexander C., Roderick A. Barr, Larry Daggett, et al. "Critical Needs for Ship Maneuverability: Lessons From the Houston Ship Channel Full-Scale Maneuvering Trials." Marine Technology and SNAME News 42, no. 01 (2005): 11–20. http://dx.doi.org/10.5957/mt1.2005.42.1.11.

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"I think the architects and engineers that design ships for the sea, where they spend 99% of their time, forget that at some point they still have to get up the ditches to load or discharge their cargo. Someday when a high-profile accident does occur, ship builders might even be brought into the civil arena and found criminally negligent and liable for building underpowered and poor handling ships."A pilot's view The Standards for Ship Maneuverability approved by the International Maritime Organization (IMO) in 2002 represent a significant step forward in ensuring adequate maneuverability of s

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Park, Nam Kyu, and Sang Cheol Suh. "Tendency toward Mega Containerships and the Constraints of Container Terminals." Journal of Marine Science and Engineering 7, no. 5 (2019): 131. http://dx.doi.org/10.3390/jmse7050131.

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This paper focuses on the coping ability of the existing container terminals when mega containerships call at a port. The length of 30,000 TEU (Twenty Equivalent Unit) ships are predicted to be 453 m and occupy 498 m of a quay wall. As a result, the length of berth should be more than a minimum of 500 m. If a 25,000 TEU ship or 30,000 TEU ship call at a terminal, the outreach of QC (Quay Crane) should be a minimum 74.3 m or 81.0 m respectively. As mega ships are calling at the port, the ship waiting time, the available stacking area, and the number of handling equipment can be limited. The ana

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AZETSU, Akihiko. "Origin of NOx emission from ships inside major bays in Japan." Science and Technology Development Journal 18, no. 4 (2015): 5–13. http://dx.doi.org/10.32508/stdj.v18i4.980.

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The amount of NOx emission from ships inside the major bays in Japan, i.e., Tokyo Bay, Osaka Bay and Ise Bay, are analyzed and the strategies in the reduction of NOx emission are discussed. Normally each ship has three sources of NOx emission, i.e., main engine, auxiliary engine and auxiliary boiler. Since wide range of ships are in operation in these bays, each of the ships are categorized in 4 ranks by the size of each ships. The amounts of NOx emission from each source and each rank of ships are estimated separately and compared with each other to understand the origin of NOx emission insid

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Yang, Shen Hua, Guo Quan Chen, Xing Hua Wang, and Yue Bin Yang. "Research on Network Communication Model of Intelligent Ship Handling Simulator." Applied Mechanics and Materials 97-98 (September 2011): 787–93. http://dx.doi.org/10.4028/www.scientific.net/amm.97-98.787.

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Due to the target ship in the traditional ship handling simulator have not the ability to give way to other ships automatically to avoid collision, this paper put forward a new idea that bringing the hydraulic servo platform, six degrees of freedom ship mathematical model, the actual traffic flow, researching achievement of automatic anti-collision in research of the new pattern ship handling simulator, and successfully develop the Intelligent Ship Handling Simulator(ISHS for short). The paper focuse on the research on the network communication model of ISHS. We took the entire simulator syste

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Kim, Kyunghwa, Juwan An, Kido Park, Gilltae Roh, and Kangwoo Chun. "Analysis of a Supercapacitor/Battery Hybrid Power System for a Bulk Carrier." Applied Sciences 9, no. 8 (2019): 1547. http://dx.doi.org/10.3390/app9081547.

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Concerns about harmful exhaust emissions from ships have been an issue. Specifically, the emissions at ports are the most serious. This paper introduces a hybrid power system that combines conventional diesel generators with two different energy storage systems (ESSs) (lithium-ion batteries (LIB) and supercapacitors (SC)) focused on port operations of ships. To verify the proposed system, a bulk carrier with four deck cranes is selected as a target ship, and each size (capacity) of LIB and SC is determined based on assumed power demands. The determined sizes are proven to be sufficient for a t

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Pawelski, Jan, Wiesław Piotrzkowski, Henryk Śniegocki, and Przemysław Wilczyński. "Factors affecting safety of handling ultra large container vessels in Port of Gdańsk." AUTOBUSY – Technika, Eksploatacja, Systemy Transportowe 20, no. 1-2 (2019): 313–16. http://dx.doi.org/10.24136/atest.2019.057.

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Paper discussed important factors affecting handling of ULCS (ultra large container ships) in Port of Gdańsk. In recent years more such vessels had been calling Gdańsk, including new generation o ULCS called Triple-E launched by Maersk. Studies conducted in Maritime University confirmed feasibility of safe handling of such large vessels but pointed to several factors needed to be taken under consideration to provide required safety level for ship handling operations. Author analysed factors responsible for safe handling ULCs in Gdańsk.

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Wang, Hong Ming, Pei Ting Sun, and Chang Feng Shi. "Research on Wind Energy Applications in Ocean Shipping." Advanced Materials Research 347-353 (October 2011): 1017–21. http://dx.doi.org/10.4028/www.scientific.net/amr.347-353.1017.

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Due to the world's energy shortage and increasing pressure on marine environmental protection, using solar and wind energy in ocean-going ships to reduce fuel consumption has become an international focus. At first this paper tests and analyzes aerodynamic characteristics of wing, and then ship model oblique towing test is conducted under different typical working conditions. Finally, the thesis analyzes the stability of ships which are equipped with additional wings in three different ocean-going cargo ships and provides security analysis basis for using sail-assist technology in ocean-going

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MIYAZAKI, Keiko, Yasuyuki NIWA, Eiko SAITO, et al. "Collision avoidance systems and their structure in ship handling simulator for autonomous ships." Proceedings of the Transportation and Logistics Conference 2018.27 (2018): 1027. http://dx.doi.org/10.1299/jsmetld.2018.27.1027.

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Satir, Tanzer, and Bhaskar Kura. "Ship Ballast Water Management in Turkish Ports and Waterways." Marine Technology Society Journal 45, no. 2 (2011): 23–32. http://dx.doi.org/10.4031/mtsj.45.2.6.

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AbstractThe introduction of invasive marine species into a new environment by ballast water attached to ship hulls has been identified as one of the four greatest threats to the world’s oceans. The other three are land-based sources of marine pollution, overexploitation of living marine resources, and physical alteration/destruction of marine habitat. Ballast is any material used to add weight to balance an object. One example includes the sandbags carried on conventional hot air balloons, which can be discarded to lighten the balloon’s load, allowing it to ascend. Ballast water is water carri

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Varsami, Anastasia. "Different Methods of Refloating a Ship." Advanced Materials Research 837 (November 2013): 792–97. http://dx.doi.org/10.4028/www.scientific.net/amr.837.792.

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In the shipping industry it is vital for a ships construction to take into consideration any grounding event that might occur, due to the fact that grounding has been representing an important issue in the maritime industry being almost always connected to a catastrophic pollution of the marine environment. Another important matter it is represented by the refloating methods that should be applied on these ships that are grounded, in order to safely take them out of their position with minimum hull damage and no pollution to the marine environment. There is a need for a basic understanding of

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Dobrodeev, A. F., N. Y. Klementyeva, and K. E. Sazonov. "A skewed movement of large-size ships in “narrow” ice channel." Arctic and Antarctic Research 64, no. 2 (2018): 200–207. http://dx.doi.org/10.30758/0555-2648-2018-64-2-200-207.

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This work investigates a previously unknown phenomenon taking place when a large carrier ship moves in a channel made by an icebreaker narrower than the carrier ship. Usually, the studies of these movement conditions assumed the center line of the ship to coincide with the channel axis and the interaction of ship sides with channel edges to be symmetric. However, the observations made in Ice Basin and in real conditions have shown that in most of cases interaction of ship sides with channel edges is not symmetric. The ship moving in the channel breaks ice only with one of her sides, the other

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Ibrahim, R. A., N. G. Chalhoub, and Jeffery Falzarano. "Interaction of Ships and Ocean Structures With Ice Loads and Stochastic Ocean Waves." Applied Mechanics Reviews 60, no. 5 (2007): 246–89. http://dx.doi.org/10.1115/1.2777172.

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The influence of floating ice on the dynamic behavior of ships and offshore structures depends on many factors such as ice thickness and its relative speed with respect to the floating structure. The ice resistance to ship motion forms an essential problem in ship design and navigation. Furthermore, local or global ice loads acting on ocean systems are random and nonsmooth when impact interaction takes place. Impact loads on the bow of a ship navigating in solid ice may be modeled by a Poisson law. The measured stress amplitudes on the ship frame at the bow follow an exponential distribution.

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Song, Hao Ran. "Study on Application in the Teaching of Ship Maneuvering Simulator." Applied Mechanics and Materials 310 (February 2013): 580–83. http://dx.doi.org/10.4028/www.scientific.net/amm.310.580.

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Ship handling Simulator system was dominated by computer technology, combined with disciplines such as ship hydrodynamics, to emulate a variety of sea and sea conditions, various types of ships and its control system, achieve the purpose of simulation training. At present, the ship manoeuvring Simulator in navigational teaching and training not only from the international shipping industry is generally acceptable, but also highly valued by the International Maritime Organization. Therefore, growing on ship manoeuvring Simulator in navigational teaching research on the application and training

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Papoulias, Fotis Andrea. "Analysis of Straight-Line Motion of Towed Ships." Journal of Ship Research 35, no. 04 (1991): 304–13. http://dx.doi.org/10.5957/jsr.1991.35.4.304.

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The problem of dynamic loss of stability in steady towing of a surface ship is considered. The two coordinates of the towing point and the towline length are the main bifurcation parameters. Bifurcation theory techniques are used in order to compute equilibrium and periodic solutions. The results are confirmed by numerical integrations. It is shown that both linear and nonlinear analyses are required to thoroughly understand, predict, and evaluate the system dynamic response.

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El Noshokaty, Said. "The implication of the stochastic gross-profit-per-day objective on the cargo ship profitability, capacity, and speed." Maritime Business Review 4, no. 3 (2019): 274–97. http://dx.doi.org/10.1108/mabr-04-2019-0016.

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Purpose This paper aims to study the implication of the stochastic gross-profit-per-day objective on the ship profitability and the ship capacity and speed. Design/methodology/approach The paper has used the mathematical model and the solution methodology given by El Noshokaty, 2013, 2014, 2017a, 2017b, and SOS, 2019. Findings The paper finds that if the ship owner follows the rate concept and the cargo demand forecast, he can improve the profitability of his company and be able to select the proper capacities and speeds for the ships used. Research limitations/implications The findings are no

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Liu, Jingxian, Feng Zhou, Zongzhi Li, Maoqing Wang, and Ryan Wen Liu. "Dynamic Ship Domain Models for Capacity Analysis of Restricted Water Channels." Journal of Navigation 69, no. 3 (2015): 481–503. http://dx.doi.org/10.1017/s0373463315000764.

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Developing adequate ship domain models may significantly benefit vessel navigation safety. In essence, navigation safety is collectively affected by the navigable waterway condition, the size and shape of the ship, and operators' skills. The existing ship domains mainly use constant values for the model input parameters, making them incapable of handling site-specific conditions. This study proposes dynamic ship domain models that take into consideration navigable waterway conditions, ship behaviours, ship types and sizes, and operators' skills in a holistic manner. Specifically, the condition

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Llull, Toni, Anna Mujal-Colilles, Marcella Castells, and Xavier Gironella. "SHIP PROPELLER EFFECTS ON HARBOURS." Coastal Engineering Proceedings, no. 36v (December 28, 2020): 15. http://dx.doi.org/10.9753/icce.v36v.waves.15.

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The increase in marine traffic during the last decades has led to important changes in ship designs. These changes have been directly affecting harbor structures designed to host smaller and less powerful ships. One of the most important consequences is the erosion of the seafloor close to the toes of the docking infrastructures which affects their stability. The World Association for Waterborne Transport Infrastructures published a guideline resuming the most used equations to solve the scouring problem (PIANC 2015). However most of the proposed formulas are empirical based using single prope

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Ikhsan, Suci Asrina, Muhammad Nur Arkham, and Anderson Foresta. "HANDLING OF PURSE SEINE CAPTURE CATCHING FOR KM. SINAR HARAPAN – 05 IN THE NUSANTARA FISHERIES PORT (PPN) SIBOLGA." JURNAL PERIKANAN TROPIS 7, no. 2 (2020): 185. http://dx.doi.org/10.35308/jpt.v7i2.2509.

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The handling of catches on ships in connection with capture fisheries in particular has the aim of preventing or reducing spoilage of fish and the possibility of a decline in the quality of the catch resulting in loss of selling prices. The main causes of the decline in the quality of the catch on the ship there are 5 factors namely how to handle, human resources, facilities, equipment, fishing units. Handling of catches on the ship with the puse seine Tangkap tool in PPN Sibolga based on calculations regarding the imbalance and suitability of the 5 factors handling on the purse seine ship nam

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Wittenborn, John L., and William M. Guerry. "Liability for Hazardous Wastes Produced During the Course of Ship Repair." Journal of Ship Production 6, no. 03 (1990): 175–79. http://dx.doi.org/10.5957/jsp.1990.6.3.175.

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Many common ship repair tasks result in the production of quantities of various hazardous wastes. These wastes, regardless of volume, present difficult burdens for shipyards and the U.S. Navy. Under federal environmental laws, the responsibility for handling hazardous wastes and the liability for their ultimate disposal rests with the person or persons who create the wastes and who arrange for their disposal. Oftentimes, however, the responsibility and liability for handling and disposing of these wastes is unclear. This is especially true when naval ships are repaired in contractor facilities

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Vassalos, Dracos, and M. P. Mujeeb-Ahmed. "Conception and Evolution of the Probabilistic Methods for Ship Damage Stability and Flooding Risk Assessment." Journal of Marine Science and Engineering 9, no. 6 (2021): 667. http://dx.doi.org/10.3390/jmse9060667.

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The paper provides a full description and explanation of the probabilistic method for ship damage stability assessment from its conception to date with focus on the probability of survival (s-factor), explaining pertinent assumptions and limitations and describing its evolution for specific application to passenger ships, using contemporary numerical and experimental tools and data. It also provides comparisons in results between statistical and direct approaches and makes recommendations on how these can be reconciled with better understanding of the implicit assumptions in the approach for u

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Fang, Ming-Chung, and Jiun-Han Ju. "The Dynamic Simulations of the Ship Towing System in Random Waves." Marine Technology and SNAME News 46, no. 02 (2009): 107–15. http://dx.doi.org/10.5957/mtsn.2009.46.2.107.

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In order to investigate the dynamic stability and safety for a ship towing system operated in waves, the present paper develops a nonlinear mathematical model, including seakeeping and maneuvering characteristics, to simulate dynamic behaviors of the towing system in random waves. In addition to waves, wind is also included in the calculations. The time history simulations of six degrees of freedom motion for both the towing and the towed ships are solved by the fourth-order Runge-Kutta method. Because of the waves, the dynamic properties including the towline tension, ship speeds, headings, a

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Jayaprakash, P. Oliver, K. Gunasekaran, and S. Muralidharan. "Comparison of Artificial Neural Network Models and Multiple Linear Regression Models in Cargo Port Performance Prediction." Advanced Materials Research 403-408 (November 2011): 3570–77. http://dx.doi.org/10.4028/www.scientific.net/amr.403-408.3570.

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Cargo ports operational performance was specified typically through revenue earned, quantum of cargo handled and number of ships serviced. It was predisposed by infrastructural facilities and cargo handling rate; it had an effect over pre-berth waiting time of vessels waiting and berthing time of ships at a port. An Indian port’s ship movement and port operational characteristics had been studied for five years (2005-2009). Ship’s service time was the crucial parameter used to quantify the port performance. This paper focused on building an artificial neural network technique based model to il

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