Bibliografías temáticas / Ships

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Literatura académica sobre el tema "Ships"

Autor: Grafiati
Publicado: 4 de junio de 2021
Última modificación: 12 de junio de 2025

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Artículos de revistas sobre el tema "Ships"

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Paulauskas, Vytautas, Ludmiła Filina-Dawidowicz, and Donatas Paulauskas. "Navigation of Ships in Channel Bends under Special Conditions Using Sensors Systems." Sensors 22, no. 22 (2022): 8783. http://dx.doi.org/10.3390/s22228783.

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Navigational channels and approaches to ports may have bends that constitute the specific sailing conditions for ships. A vessel’s entrance into a bend and its safe passing depends on the ship’s position accuracy, turn angle, and internal and external forces influencing the ships, as well as the captain’s or pilot’s experience. In order to assure a ship’s safe navigation under specific conditions, the possibility to measure individual ship movement parameters with the use of special sensors is needed to accurately calculate the ship’s trajectory considering the specific dimensions of ships. Moreover, hydro-meteorological and hydrological limitations for ships with different parameters and maneuverability should be evaluated in advance. The article aims to develop the methodology for calculating ships’ route trajectory in channel bends and approaches to ports under special navigational conditions. The mathematical model that may be used to calculate wind velocity limitations and distance crossed by a ship during maneuvers, depending on the ship’s maneuverability, hydro-metrological, and hydrological conditions, was elaborated. The methodology was verified by the example of a few ships entering specific channel bends. Wind velocity limitations depending on wind direction for the SUEZMAX tanker and other selected types of ships during crossing navigational channel bend near Klaipeda port were calculated. The presented theoretical basis may be used by ships’ captains and pilots who plan and perform operations of vessels’ crossing the approaches to ports and navigational channel bends, as well as by navigational channels designers who plan the channel’s parameters in difficult geographical and navigational conditions. Its application may influence the safety increase of maritime transport in limited or specific areas.
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Gucma, Lucjan, Andrzej Bąk, and Sylwia Sokołowska. "Stochastic Model of Ships Traffic Capacity and Congestion — Validation by Real Ships Traffic Data on Świnoujście — Szczecin Waterway." Annual of Navigation 24, no. 1 (2017): 177–91. http://dx.doi.org/10.1515/aon-2017-0013.

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AbstractPaper presents validation of previously created stochastic ships traffic stream model by the real data of ships delays on Świnoujście — Szczecin waterway. The model is mostly based on Monte Carlo methodology. The model is microscopic which means that each ship’s model is treated as separate object possessing given attributes. As the main parameter of presented validation total waiting (delay) time of ships have been applied. The time of ships delays was possessed from Szczecin VTS centre and compared with the model output.
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Stoynov, Stoyno, and Borislav Nikolov. "Approach To Ship’s It And Ot Systems Cybersecurity Improvement." Pedagogika-Pedagogy 93, no. 7s (2021): 185–96. http://dx.doi.org/10.53656/ped21-7s.16appr.

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Daily cyber-attacks on ships’ IT and OT systems are not a rare occurrence anymore. This has been taken into account in recent years and the IMO has issued directives and circulars with recommendations for increasing the cybersecurity of ship information systems as part of the overall ship security system. The effect of a successful cyber-attack of any kind, on elements of the ship’s IT and OT systems, can have a disastrous impact not only on the ship itself but also on the environment. While modern ships can be designed and all modern methods implemented to reduce and prevent the possibility of cyber-attacks onboard existing ships, it is not possible to achieve this security level and it is necessary to implement various solutions. At the same time, the ships’ crew is declining worldwide and most ships do not have IT officers or trained staff onboard to maintain the ship’s information systems. Because of that, the solutions that need to be put in place to increase the security of ship’s information systems must be easy to implement, use, and maintain. This article examines the need and some technical solutions that can be used to improve the cybersecurity of ship’s IT and OT systems in response to the existing cyber-attacks and threats in the global shipping and maritime industry.
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Kim, Seongwan, Heemoon Kim, and Hyeonmin Jeon. "Development of a Simplified Performance Monitoring System for Small and Medium Sized Ships." Journal of Marine Science and Engineering 11, no. 9 (2023): 1734. http://dx.doi.org/10.3390/jmse11091734.

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Regulations on emissions from ships are being strengthened, and emission reduction systems and alternative technologies are being developed. In addition, the amount of emissions is closely related to the performance of the propulsion systems of the ship; however, performance measurement systems have mainly been developed for large commercial ships. For small and medium-sized ships, although the output of the propulsion system is rather low, the number of vessels sailing in the coast is very high. Therefore, a performance-monitoring system is required for small and medium-sized ships. However, for small and medium-sized ships, there are no suitable performance and emissions calculation systems. Conventional performance-measuring and analysis systems for large ships have difficulties in terms of their cost and installation when applied to small and medium-sized ships. In this study, a new system was developed that is able to calculate the speed, power, fuel consumption, carbon dioxide emission assumptions, and efficiency of a ship by receiving simple key data such as GPS, fuel flow, and rpm data rather than checking the ship’s condition using massive forms of data. The system transmits data to the shore’s remote-monitoring center in real-time through a communication network. Using these data, it is possible to estimate a ship’s aging factor, engine performance, amount of exhaust gas, etc., and the accumulated data of all coastal ships in a country can be used as basic data for governments to use to support eco-friendly ship policies.
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Gucma, Stanisław, and Wojciech Ślączka. "Analysis of Simulation Visualizations of Shipš Traffic." Journal of Konbin 8, no. 1 (2008): 69–76. http://dx.doi.org/10.2478/v10040-008-0102-y.

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Analysis of Simulation Visualizations of Shipš Traffic In the article the problem of comparison and compatibility of the results of simulation research have been conducted on various simulators of ship's traffic with two different methods of visualization (types of visualizations) is being examined. In both cases the similar mathematical model of ships' traffic has been applied which had been verified by the methods used in marine traffic engineering. The research have been conducting on the new designed LNG terminal in Świnoujście.
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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 Methodology for Intact Stability (SEMIS) is proposed. SEMIS is introduced for simply evaluating the safety of ships’ stability according to GM. Based on the stability parameters of 336 loading conditions of 19 model ships, empirical formulas of SEMIS are derived. To verify the proposed methodology, the stability parameters of two model ships in 28 loading conditions are calculated using the proposed empirical formulas and the principal calculation methods, respectively, and then compared. The developed SEMIS efficiently evaluates the ships’ stability using only GM.
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V. Spyropoulos, Dionysios, and Epaminondas D. Mitronikas. "A Review on the Faults of Electric Machines Used in Electric Ships." Advances in Power Electronics 2013 (March 5, 2013): 1–8. http://dx.doi.org/10.1155/2013/216870.

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Electric propulsion systems are today widely applied in modern ships, including transport ships and warships. The ship of the future will be fully electric, and not only its propulsion system but also all the other services will depend on electric power. The robust and reliable operation of the ship’s power system is essential. In this work, a review on the mechanical and electrical faults of electric machines that are used in electric ships is presented.
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Tarnapowicz, Dariusz, and Sergiej German-Galkin. "International Standardization in the Design of “Shore to Ship” - Power Supply Systems of Ships in Port." Management Systems in Production Engineering 26, no. 1 (2018): 9–13. http://dx.doi.org/10.2478/mspe-2018-0001.

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Abstract The decisive source of air pollution emissions in ports is the berthed ships. This is primarily caused by the work of ship’s autonomous generator sets. One way of reducing the air pollution emissions in ports is the supply of ships from electricity inland system. The main problem connected with the power connection of ships to the inland network is caused by different values of levels and frequencies of voltages in these networks (in various countries) in relation to different values of levels and frequencies of voltages present in the ship’s network. It is also important that the source power can range from a few hundred kW up to several MW. In order to realize a universal „Shore to Ship” system that allows the connection of ships to the electricity inland network, the international standardization is necessary. This article presents the current recommendations, standards and regulations for the design of „Shore to Ship” systems.
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Ghys, Roger, and Neil W. Cormack. "An Investigation into the Loss of the Steel Bark Admiral Karpfanger ex L'Avenir." Marine Technology and SNAME News 41, no. 04 (2004): 141–60. http://dx.doi.org/10.5957/mt1.2004.41.4.141.

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As the era of the deep-water commercial sailing ships was coming to its close, several steamship companies with concern for their deck officer requirements decided to train their future officers as cadets in training ships under their own house flags. These were in the form of square-rigged vessels fitted to accommodate several cadets. They were classified as cargo-cum-cadet ships, and for the purpose existing ships were purchased. The cadets were given instruction in seamanship, navigation, cargo stowage, sailmaking, boatwork, and ship's business, all with the object that on graduation and so qualified they would be posted to company steamships as deck officers.
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Kang, Eun-Ji, Hyeong-Tak Lee, and Ik-Soon Cho. "Analysis of Allowable Berthing Velocity by Ship Size considering Designed Energy." Korea Society of Coastal Disaster Prevention 8, no. 4 (2021): 297–306. http://dx.doi.org/10.20481/kscdp.2021.8.4.297.

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The berthing velocity is the factor that has the greatest influence on the berthing energy. For the vessel to berth safely, it should not exceed the appropriate berthing velocity. In addition, when the vessel is berthing, it should be berthed with berthing energy smaller than the energy absorption of the fender. This study intends to derive the allowable berthing velocity by ship size considering the berthing capacity. When a small vessel berth, the allowable berthing velocity is greater than when a relatively large vessel berths. In this study, the extrapolated velocity is defined as the relative value of the ship’s berthing velocity when considering the ship's size and the berthing capacity. A regression equation for the allowable berthing velocity by ship size was derived by calculating the designed berthing energy for each fender performance. It was also verified whether any ships were exceeding the allowable berthing velocity by comparing it with the measured data for each jetty. In addition, the extrapolated velocity was proposed using the regression equation, and as a result of applying the measured data, 11 ships exceeded the designed velocity in jetty 1, but it was confirmed that all ships were safely berthed in jetty 2,3. Therefore, the target pier of this study was evaluated as a pier where ships can be berthed safely. A safer berthing velocity operation guideline can be suggested if the allowable berthing velocity by ship size is analyzed and utilized at various piers. Extrapolated velocity can also be used for risk analysis of berthing.
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Tesis sobre el tema "Ships"

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Sarch, Martin G. "Fin stabilizers as maneuver control surfaces." Thesis, Monterey, Calif. : Springfield, Va. : Naval Postgraduate School ; Available from National Technical Information Service, 2003. http://library.nps.navy.mil/uhtbin/hyperion-image/03Dec%5FSarch.pdf.

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Thesis (M.S. in Mechanical Engineering)--Naval Postgraduate School, December 2003.<br>Thesis advisor(s): Fotis A. Papoulias, Charles N. Calvano. Includes bibliographical references (p. 111-112). Also available online.
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Bassham, Bobby A. "An evaluation of electric motors for ship propulsion." Thesis, Monterey, Calif. : Springfield, Va. : Naval Postgraduate School ; Available from National Technical Information Service, 2003. http://library.nps.navy.mil/uhtbin/hyperion-image/03Jun%5FBassham.pdf.

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Thesis (M.S. in Electrical Engineering)--Naval Postgraduate School, June 2003.<br>Thesis advisor(s): Robert Ashton, Todd Weatherford. Includes bibliographical references (p. 93-96). Also available online.
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Kumar, Ramesh. "Defense of surface ships against anti ship missiles." Thesis, Monterey, California. Naval Postgraduate School, 1990. http://hdl.handle.net/10945/28092.

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This thesis discusses the Anti-Ship Missile problem and explores the various options available for countering the Anti-Ship Missile. Special emphasis has been given to the chaff solution for defeating the Anti-Ship Missile. A program has been written to enable the testing of the effectiveness of the medium range and close range chaff deployed in conjunction with various conditions of wind and various ship's courses. The program can be used to determine the best solution for deploying the medium range chaff given the known parameters such as detection ranges and probable wind conditions. The program was run with medium range chaff deployed in the default position and the wind's course was varied through 180 degrees. For each of the courses of the wind 3 wind speeds were tried. The ship's course was also varied through 360 degrees for each of the winds courses in 45 degree steps. The seduction chaff was automatically deployed by the program
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Kamur, Ramesh. "Defense of surface ships against anti ship missiles /." Monterey, California : Naval Postgraduate School, 1990. http://edocs.nps.edu/npspubs/scholarly/theses/1990/Sep/09Sep%5FKumar.pdf.

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Thesis (M.S. in Systems Engineering (Electronic Warfare))--Naval Postgraduate School, September 1990.<br>Thesis Advisor(s): Milne, Edmund A. Second Reader: Cooper, Alfred W. M. "September 1990." Description based on title screen as viewed on March 18, 2010. Author(s) subject terms: Anti-Ship Missiles, Seduction mode, Distraction mode, Soft kill, Hard kill. Includes bibliographical references (p. 110).
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Yeung, Tat-chuen. "The Hong Kong shipping register : past, present and future /." [Hong Kong] : University of Hong Kong, 1994. http://sunzi.lib.hku.hk/hkuto/record.jsp?B13762217.

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Souhan, Brian E. "Closed loop control of a cascaded multi-level converter to minimize harmonic distortion." Thesis, Monterey, Calif. : Springfield, Va. : Naval Postgraduate School ; Available from National Technical Information Service, 2005. http://library.nps.navy.mil/uhtbin/hyperion/05Jun%5FSouhan.pdf.

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Colgary, Katherine A. Willett Devon K. "Ship and installation program optimal stationing of Naval ships /." Monterey, Calif. : Springfield, Va. : Naval Postgraduate School ; Available from National Technical Information Service, 2006. http://library.nps.navy.mil/uhtbin/hyperion/06Jun%5FColgary.pdf.

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Thesis (M.S. in Applied Science (Operations Research))--Naval Postgraduate School, June 2006.<br>Thesis Advisor(s): Robert F. Dell and William J. Tarantino. "June 2006." Includes bibliographical references (p. 47-48). Also available in print.
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Daqaq, Mohammed F. "Virtual Reality Simulation of Ships and Ship-Mounted Cranes." Thesis, Virginia Tech, 2003. http://hdl.handle.net/10919/32305.

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We present a virtual simulation of ships and ship-mounted cranes. The simulation is carried out in a Cave Automated Virtual Environment (CAVE). This simulation serves as a platform to study the dynamics of ships and ship-mounted cranes under dynamic sea environments and as a training platform for ship-mounted crane operators. A model of the (Auxiliary Crane Ship) T-ACS 4-6 was built, converted into an OpenGL C++ API, and then ported into the CAVE using DiverseGL (DGL). A six-degrees-of-freedom motion base was used to simulate the actual motion of the ship. The equations of motion of the ship are solved using the Large Amplitude Motion Program (LAMP), while the equations of motion of the crane payload are numerically integrated; the interaction between the payload and the ship is taken into consideration. A nonlinear delayed-position feedback-control system is applied to the crane and the resulting simulation is used to compare the controlled and uncontrolled pendulations of the cargo. Our simulator showed a great deal of realism and was used to simulate different ship-motion and cargo transfer scenarios. This work received support from the Office of Naval Research under Grant No. N00014-99-1-0562.<br>Master of Science
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Willett, Devon K. "Ship and installation program optimal stationing of Naval ships." Thesis, Monterey California. Naval Postgraduate School, 2006. http://hdl.handle.net/10945/2768.

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.2 billion in savings. We also investigate the influence of using two different measures of pier capacity and incorporate 30 new ships and submarines to demonstrate SHIP's ability to station the proposed future force structure.<br>US Navy (USN) author.
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Rollings, Sarah E. "Seakeeping analysis of small displacement high-speed vessels." Monterey, Calif. : Springfield, Va. : Naval Postgraduate School ; Available from National Technical Information Service, 2003. http://library.nps.navy.mil/uhtbin/hyperion-image/03Mar%5FRollings.pdf.

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Libros sobre el tema "Ships"

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Eliseo, Maurizio. Il transatlantico Rex: Ship of ships. Tormena, 2003.

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Dodman, Frank Ellerton. Ships. Penguin, 1990.

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Plisson, Philip. Ships. Abrams Books for Young Readers, 2007.

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Dineen, Jaqueline. Ships. Bookwright Press, 1988.

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Roy, Richards. Ships. Raintree Steck-Vaughn, 1996.

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Andrew, Solway, and Stephens Simon curator, eds. Ships. World Book/Two-Can, 1996.

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Oxlade, Chris. Ships. Barron's Educational Series, 2001.

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Butterfield, Moira. Ships. Dorling Kindersley, 1994.

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John, Mousdale, ed. Ships. Macdonald, 1986.

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Lindeen, Mary. Ships. Bellwether Media, 2007.

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Capítulos de libros sobre el tema "Ships"

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Lowe, Vaughan. "Ships." In International Courts and the Development of International Law. T. M. C. Asser Press, 2013. http://dx.doi.org/10.1007/978-90-6704-894-1_23.

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Atutxa, Iñigo, and Gonzalo Abad. "Ships." In Power Electronics and Electric Drives for Traction Applications. John Wiley & Sons, Ltd, 2016. http://dx.doi.org/10.1002/9781118954454.ch6.

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Ylitalo, Matthew, and Sarah Easterby-Smith. "Ships." In Doing Spatial History. Routledge, 2021. http://dx.doi.org/10.4324/9780429291739-9.

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Wanner, Martin-Christoph. "Ships." In Technology Guide. Springer Berlin Heidelberg, 2009. http://dx.doi.org/10.1007/978-3-540-88546-7_57.

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Zhao, Yinqiu, Yongfeng Suo, and Bo Xian. "Ship Encounter Scenario and Maneuvering Behavior Mining Based on AIS Data." In Proceeding of 2021 International Conference on Wireless Communications, Networking and Applications. Springer Nature Singapore, 2022. http://dx.doi.org/10.1007/978-981-19-2456-9_7.

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AbstractIn order to gain a deep understanding of the operation of different ships in different time states and understand the geographical distribution of the encounters of ships near Gulei Port and the maneuvering behavior patterns of ships in the port area, this essay is different from the traditional single ship versus multi-target ship research. Through the comprehensive processing and data regulation of Gulei Port AIS (Automatic Identification System) data, the ships with consistent temporal and spatial characteristics are found, and the time and geographical position of the voyage data are revised, which solves the problem of asynchronous data processing of multi-target ships at different times. By ship navigation data mining, obtaining the trajectory distribution of the ship under a certain time condition, the distribution of the encounter area, the geographical distribution of the speed, and the law of ship speed and heading changes triggered by the formation of the encounter, summing up the same behavioral characteristics of different ship maneuvering modes in the port area at low speed.
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Chibnall, Steve, and Brian McFarlane. "Big Ships and Little Ships." In The British ‘B’ Film. British Film Institute, 2009. http://dx.doi.org/10.1007/978-1-84457-574-9_1.

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Unger, Richard W. "Making Maps without Ships, with Ships." In Ships on Maps. Palgrave Macmillan UK, 2010. http://dx.doi.org/10.1057/9780230282162_2.

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Caquet, P. E. "Three Ships." In The Orient, the Liberal Movement, and the Eastern Crisis of 1839-41. Springer International Publishing, 2016. http://dx.doi.org/10.1007/978-3-319-34102-6_1.

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Fischer, Stephan, and Abdulmotaleb El Saddik. "Java-Ships." In Open Java. Springer Berlin Heidelberg, 1999. http://dx.doi.org/10.1007/978-3-642-58396-4_7.

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Yang, Tingting. "Intelligent Ships." In Maritime Law in Motion. Springer International Publishing, 2020. http://dx.doi.org/10.1007/978-3-030-31749-2_34.

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Actas de conferencias sobre el tema "Ships"

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Lamb, Thomas, Nathaniel Beavers, Thomas Ingram, and Anton Schmieman. "The Benefits and Cost Impact of Aluminum Naval Ship Structure." In SNAME Maritime Convention. SNAME, 2009. http://dx.doi.org/10.5957/smc-2009-041.

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Due to budget pressure and a growing diversity of mission requirements, the U.S. Navy is in need of affordable and operation flexible ships. This paper presents an acquisition and total-life cycle cost comparison of steel and aluminum equivalent naval ship designs. A common perception is that aluminum ships cost significantly more than steel ships. This paper illustrates that even though the cost of the equivalent aluminum ship structure is 40% more than the steel structure, the equivalent aluminum naval ship can be built within just 7.5% of the acquisition price of the steel ship. This is possible because of the cascading benefits of the aluminum ship’s significantly lighter weight. Advances in aluminum technology and new facilities in the shipyards for aluminum production are further improving the acquisition cost of aluminum ship. From a total life-cycle cost perspective, aluminum ships enjoy a clear advantage over steel ships, the details of which are provided in this paper. Based on the findings presented in the paper it is suggested that the U.S. Navy should consider broadening its use of aluminum ships.
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Schellin, Thomas E., and Ould El Moctar. "Numerical Prediction of Impact-Related Wave Loads on Ships." In 25th International Conference on Offshore Mechanics and Arctic Engineering. ASMEDC, 2006. http://dx.doi.org/10.1115/omae2006-92133.

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We present a numerical procedure to predict impact-related wave-induced (slamming) loads on ships. The procedure was applied to predict slamming loads on two ships that feature a flared bow with a pronounced bulb, hull shapes typical of modern offshore supply vessels. The procedure used a chain of seakeeping codes. First, a linear Green function panel code computed ship responses in unit amplitude regular waves. Wave frequency and wave heading were systematically varied to cover all possible combinations likely to cause slamming. Regular design waves were selected on the basis of maximum magnitudes of relative normal velocity between ship critical areas and wave, averaged over the critical areas. Second, a nonlinear strip theory seakeeping code determined ship motions under design wave conditions, thereby accounting for the ship’s forward speed, the swell-up of water in finite amplitude waves, as well as the ship’s wake that influences the wave elevation around the ship. Third, these nonlinearly computed ship motions constituted part of the input for a Reynolds-averaged Navier-Stokes equations (RANSE) code that was used to obtain slamming loads. Favourable comparison with available model test data validated the procedure and demonstrated its capability to predict slamming loads suitable for design of ship structures.
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Ahmad, S. "Ships Conversion and Ship Repair Yards." In European Shipbuilding, Repair and Conversion – The Future. RINA, 2004. http://dx.doi.org/10.3940/rina.eu.2004.13.

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Maheshwar, Chilukuri. "Improving Propulsion Efficiency of Ships using Retractable Bridge." In SNAME Maritime Convention. SNAME, 2012. http://dx.doi.org/10.5957/smc-2012-p47.

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Traditionally, sailing ships were commanded from the quarter deck, aft of the mainmast. With the arrival of paddle steamers, engineers required a platform from which they could inspect the paddle wheels and where the captain's view would not be obstructed by the paddle houses. A raised walkway, literally a bridge, connecting the paddle houses was therefore provided. When the screw propeller superseded the paddle wheel, the bridge was retained. Commands would be passed from the senior officer on the bridge to stations dispersed throughout the ship, where physical control of the ship was exercised, as technology did not exist for the remote control of steering or machinery. Helm orders would be passed to an enclosed wheel house, where the coxswain or helmsman operated the ship's wheel. Engine commands would be relayed to the engineer in the engine room by an engine order telegraph, which displayed the captain's orders on a dial. The engineer would ensure that the correct combination of steam pressure and engine revolutions were applied. The bridge was often open to the elements, therefore a weatherproof pilot house could be provided, from which a pilot, who was traditionally the ship's navigating officer, could issue commands from shelter. Iron, and later steel, ships also required a compass platform. This was usually a tower, where a magnetic compass could be sited far away as possible from the ferrous interference of the hulk of the ship. Depending upon the design and layout of a ship, all of these terms can be variously interchangeable. Many ships still have a flying bridge, a platform atop the pilot house, open to weather, containing a binnacle and voice tubes to allow the conning officer to direct the ship from a higher position during fair weather conditions. The concept was that the higher you are situated, the better and farther you could see. Larger ships, often had a navigation bridge which would be used for the actual conning of the ship. Modern advances in remote control equipment have seen progressive transfer of the actual control of the ship to the bridge. The wheel and engines can be operated directly from the bridge, controlling often-unmanned machinery spaces. Today, Monkey Island and Crow’s nest have become so archaic that people have forgotten their meaning as they have been deleted from contemporary marine glossaries.
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5

Johnston, M. E. "Evolution of an Inertial Measurement System called MOTAN: Summary of Installations on Five Ice-Strengthened Ships." In SNAME 7th International Conference and Exhibition on Performance of Ships and Structures in Ice. SNAME, 2006. http://dx.doi.org/10.5957/icetech-2006-109.

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This paper provides a description of MOTAN, an inertial motion a measurement system that has been used to measure ice-induced global impact forces on ships since the year 2000. Measurements from three ships are used to show that MOTAN measures whole-ship motions reliably, and that those motions can be used to determine global impact forces on ships with reasonable accuracy. Data from the CCGS Terry Fox are used to show that MOTAN and two other, independent instrumentation systems measured impact forces that were in good agreement. Having demonstrated that MOTAN is a viable means of measuring global impact forces on ships, the discussion focuses upon more recent efforts to develop an autonomous MOTAN, i.e. a system that operates unattended during a ship’s entire operating season. To date, the autonomous MOTAN has been installed on two ships: CCGS Henry Larsen and the M/T Véga Desgagnés, with the objective of using the data to determine statistical information about the magnitude and frequency of global loads that a ship experiences during its operating season.
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6

Asinovsky, Volf. "Use of Full Scale Trial Results for Investigations of Maneuverability of Ships." In SNAME 22nd American Towing Tank Conference. SNAME, 1989. http://dx.doi.org/10.5957/attc-1989-055.

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Ship trials provide a very important source of information for solution of different tasks of maneuverability of ships. This paper is devoted to the consideration of two such tasks: definition of the maneuverability criteria and determination of the hydrodynamic characteristics of the ship's hull. A set of criteria based on determining parameters of ship maneuvering is considered. A method is presented for the determination of hydrodynamic characteristics of a ship hull from the parameters of motion measured during the maneuvering trials. This method is based on the results of the analysis of the relationship between the hydrodynamic forces on the ship hull and rudder. The hydrodynamic characteristics of the ship hull determined from the trials can be used for new designs, in the study of scale effects, and other tasks of the applied maneuverability of ships.
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7

Xu, Lijun, Ling Zhu, Xiangbiao Wang, and Preben Terndrup Pedersen. "Collision Experiments of Ship Models in Water Tank." In ASME 2020 39th International Conference on Ocean, Offshore and Arctic Engineering. American Society of Mechanical Engineers, 2020. http://dx.doi.org/10.1115/omae2020-18741.

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Abstract The consequences of ship collision could be very serious, causing lots of human casualties, environmental pollution and huge economic losses. It is essential to study the collision process including two ships in water. In the past, most ship collision tests are based on the study of collision damage of local structures and there are few experiments considering the motion response of ships during the collision process. Actually, the interaction between the fluid and structure does have effects on the collision consequences. In this paper, the collision experiments of ship models are conducted in a water tank, with particular attention on structure in the collision region. Considering the coupling effect of external dynamics and internal mechanics, the dynamic responses of ships during collision are studied. The failure mode and deformation damage characteristics of ship’s side structure in collision region are also assessed. On this basis, the time history of collision forces, the damage extent of the struck structure and the energy absorption are analyzed and then the influence of velocity and ship’s mass on the results are evaluated. It provides valuable test data for validation of numerical simulation and theoretical studies.
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8

Kim, Won-Ouk, Song-Jin Kang, Young-Rong Kim, and Chang-Je Kim. "A Study on Safer New Optimal Route for Anti-Collision in Coastal Waters." In ASME 2022 41st International Conference on Ocean, Offshore and Arctic Engineering. American Society of Mechanical Engineers, 2022. http://dx.doi.org/10.1115/omae2022-79685.

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Abstract Although radar and AIS alarm functions have been used as support measures for collision prevention in many ships, they lacked the function to identify actual collision risk ships and inform the degree of risk and did not provide information on avoidance routes. This study aims to design a newly developed safer new optimal route for anti-collision based on the Collision Risk Zone assessment method, targeting mainly very small-sized ships that caused most of the collision accidents due to human errors. Designing a safer new optimal route is composed of three segments according to the ship’s characteristics. That is, empirical method for small-sized ships, collision risk zone method for larger ships and then combination method between empirical and collision risk method. In addition, this study analyzed the collision risk of various scenarios according to the navigation relationships and speed conditions between the two meeting ships. As a result, the model proposed in this study numerically calculated the risk of collision according to the navigation situation and could provide a safe optimal avoidance path accordingly. Therefore, this model can be applied to build the collision avoidance model of not only the current ship but remote-controlled ship, which is under compliance with COLREG regulations and involves the possibility of human error in an operation.
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9

Xie, Xueshen, Yuxiang Wan, Qing Wang, Hao Liu, and Dakui Feng. "Numerical Simulation of Ship-Ship Interactions in Waves." In ASME 2019 38th International Conference on Ocean, Offshore and Arctic Engineering. American Society of Mechanical Engineers, 2019. http://dx.doi.org/10.1115/omae2019-95737.

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Abstract A numerical simulation of the hydrodynamic interaction and attitude of a ship and two ships of different sizes navigating in parallel in waves were carried out in this paper. The study of the two ships navigating in parallel is of great significance in marine replenishment. This paper used in house computational fluid dynamics (CFD) code to solve unsteady RANS equation coupled with six degrees of freedom (6DOF) solid body motion equations. URANS equations are solved by finite difference method and PISO algorithm. Structured grid with overset technology have been used to make computations. Turbulence models used the Shear Stress Transport (SST) k-ω model. The method used for free surface simulation is single phase level set. In this paper, two DTMB 5415 with different scales are selected for simulation analysis. This paper analyzed the impact of the big ship on the small ship when the two ships were navigating in parallel. This paper also analyzed the relationship between interaction and velocity between hulls, which has certain guiding significance for the ship’s encounter on the sea.
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10

Pinheiro, Liliana V., Conceição J. E. M. Fortes, and João A. Santos. "Risk Analysis and Management of Moored Ships in Ports." In ASME 2018 37th International Conference on Ocean, Offshore and Arctic Engineering. American Society of Mechanical Engineers, 2018. http://dx.doi.org/10.1115/omae2018-78396.

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The risks associated with mooring of ships are a major concern for port and maritime authorities. Sea waves and extreme weather conditions can lead to excessive movements of vessels and mooring loads affecting the safety of ships, cargo, passengers, crew or port infrastructures. Normally, port activities such as ships’ approach manoeuvres and loading/unloading operations, are conditioned or suspended based solely on weather or wave forecasts, causing large economic losses. Nevertheless, it has been shown that some of the most hazardous events with moored ships happen on days with mild sea and wind conditions, being the culprit long waves and resonance phenomena. Bad weather conditions can be managed with an appropriate or reinforced mooring arrangement. A correct risk assessment must be based on the movements of the ship and on the mooring loads, taking into account all the moored ship’s system. In this paper, the development of a forecast and warning system based on the assessment of risks associated with moored ships in port areas, SWAMS ALERT, is detailed. This modular system can be scaled and adapted to any port, providing decision-makers with accurate and complete information on the behaviour of moored ships, movements and mooring loads, allowing a better planning and integrated management of port areas.
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Informes sobre el tema "Ships"

1

Rees, Brian G. Ship Effect- Issues with Radiation Detection Aboard Ships. Office of Scientific and Technical Information (OSTI), 2018. http://dx.doi.org/10.2172/1418784.

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2

Calambokidis, John. Behavioral and Physiological Response of Baleen Whales to Ships and Ship Noise. Defense Technical Information Center, 2013. http://dx.doi.org/10.21236/ada604988.

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3

Calambokidis, John. Behavioral and Physiological Response of Baleen Whales to Ships and Ship Noise. Defense Technical Information Center, 2014. http://dx.doi.org/10.21236/ada617027.

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Quintiere, J. G., H. R. Baum, and J. R. Lawson. Fire growth in combat ships. National Bureau of Standards, 1985. http://dx.doi.org/10.6028/nbs.ir.85-3159.

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5

Rockett, John A. Fire growth in combat ships. National Bureau of Standards, 1986. http://dx.doi.org/10.6028/nbs.ir.86-3451.

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Sieve, Michael W., David P. Kihl, and Bilal M. Ayyub. Fatigue Design Guidance for Surface Ships. Defense Technical Information Center, 2000. http://dx.doi.org/10.21236/ada389305.

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Thomas, Patricia J. Analysis of Unplanned Losses from Deploying Ships. Defense Technical Information Center, 1996. http://dx.doi.org/10.21236/ada319602.

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Hanke, R. R. Amphibious Warfare Ships for the 21st Century. Defense Technical Information Center, 1992. http://dx.doi.org/10.21236/ada262304.

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Besnard, Eric, Adeline Schmitz, George Tzong, Kalle Kaups, and Hamid Hefazi. Hydrofoil Design and Optimization for Fast Ships. Defense Technical Information Center, 1998. http://dx.doi.org/10.21236/ada338264.

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Lamb, G. R. High-Speed, Small Naval Ships Technology Development Plan. Defense Technical Information Center, 2003. http://dx.doi.org/10.21236/ada428141.

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